Two-coordinate Complexes Research Articles

Two new CuI(4,5-diazafluoren-9-one)2-modified compounds based on the Keggin anion and its bicapped bisupporting derivative

Two new CuI(4,5-diazafluoren-9-one)2-modified compounds based on Keggin anion and its bicapped bisupporting derivative, [Cu(DF)2]3[PMo12O40] (1), [Cu(DF)2]2[{PMo12O40(VO)2}{Cu(DF)2}2] (2) (DF = 4,5-diazafluoren-9-one), have been prepared under hydrothermal conditions and characterized by single-crystal X-ray diffraction, elemental analyses, infrared spectra, thermogravimetric analyses, and cyclic voltammetry. In 1, the layer consisting of two-coordinate CuI complexes arranges alternatively with the other layer consisting of three-coordinate CuI complexes. Strong aryl packing interactions between these layers construct a stable supramolecular metal-organic framework with 1D channels, which can accommodate the anions. In 2, the anion is a reduced bivanadyl capped α-Keggin polymolybdate anion, covalently bonded to two [Cu(DF)2]+ groups. Chains consisting of [{PMo12O40(VO)2}{Cu(DF)2}2]2− arrange alternatively with chains consisting of discrete CuI complexes. The electrochemical behaviors of carbon paste electrodes for 1 and 2 have been studied in detail.

Recent Developments in Enantioselective Gold(I) Catalysis

The use of gold(I) complexes as catalysts for organic transformations has become increasingly common over the past decade, leading to the development of a number of useful carbon-carbon and carbon-heteroatom bond-forming processes. In contrast, enantioselective catalysis employing gold(I) complexes was, until recently, exceedingly rare, due in large part to the pronounced tendency of gold(I) to form linear, two-coordinate complexes. However, new approaches and strategies have emerged over the past two years, leading to the development of a number of effective gold(I)-catalyzed enantioselective transformations, most notably the enantioselective hydrofunctionalization of allenes. Outlined herein is an overview of enantioselective gold(I) catalysis since 2005.

Substituent Effects in Formally Quintuple-Bonded ArCrCrAr Compounds (Ar = Terphenyl) and Related Species

The effects of different terphenyl ligand substituents on the quintuple Cr-Cr bonding in arylchromium(I) dimers stabilized by bulky terphenyl ligands (Ar) were investigated. A series of complexes, ArCrCrAr (1-4; Ar = C6H2-2,6-(C6H3-2,6-iPr2)2-4-X, where X = H, SiMe3, OMe, and F), was synthesized and structurally characterized. Their X-ray crystal structures display similar trans-bent C(ipso)CrCrC(ipso) cores with short Cr-Cr distances that range from 1.8077(7) to 1.8351(4) A. There also weaker Cr-C interactions [2.294(1)-2.322(2) A] involving an C(ipso) of one of the flanking aryl rings. The data show that the changes induced in the Cr-Cr bond length by the different substituents X in the para positions of the central aryl ring of the terphenyl ligand are probably a result of packing rather than electronic effects. This is in agreement with density functional theory (DFT) calculations, which predict that the model compounds (4-XC6H4)CrCr(C6H4-4-X) (X = H, SiMe3, OMe, and F) have similar geometries in the gas phase. Magnetic measurements in the temperature range of 2-300 K revealed temperature-independent paramagnetism in 1-4. UV-visible and NMR spectroscopic data indicated that the metal-metal-bonded solid-state structures of 1-4 are retained in solution. Reduction of (4-F3CAr')CrCl (4-F3CAr' = C6H2-2,6-(C6H3-2,6-iPr2)2-4-CF3) with KC8 gave non-Cr-Cr-bonded fluorine-bridged dimer {(4-F3CAr')Cr(mu-F)(THF)}2 (5) as a result of activation of the CF3 moiety. The monomeric, two-coordinate complexes [(3,5-iPr2Ar*)Cr(L)] (6, L = THF; 7, L = PMe3; 3,5-iPr2Ar* = C6H1-2,6-(C6H-2,4,6-iPr3)2-3,5-iPr2) were obtained with use of the larger 3,5-Pri2-Ar* ligand, which prevents Cr-Cr bond formation. Their structures contain almost linearly coordinated CrI atoms, with high-spin 3d5 configurations. The addition of toluene to a mixture of (3,5-iPr2Ar*)CrCl and KC8 gave the unusual dinuclear benzyl complex [(3,5-iPr2Ar*)Cr(eta3:eta6-CH2Ph)Cr(Ar*-1-H-3,5-iPr2)] (8), in which a C-H bond from a toluene methyl group was activated. The electronic structures of 5-8 have been analyzed with the aid of DFT calculations.

Cleaving Mercury-Alkyl Bonds: A Functional Model for Mercury Detoxification by MerB

The extreme toxicity of organomercury compounds that are found in the environment has focused attention on the mechanisms of action of bacterial remediating enzymes. We describe facile room-temperature protolytic cleavage by a thiol of the Hg-C bond in mercury-alkyl compounds that emulate the structure and function of the organomercurial lyase MerB. Specifically, the tris(2-mercapto-1-t-butylimidazolyl)hydroborato ligand [Tm(Bu(t))], which features three sulfur donors, has been used to synthesize [Tm(Bu(t))]HgR alkyl compounds (R = methyl or ethyl) that react with phenylthiol (PhSH) to yield [Tm(Bu(t))]HgSPh and RH. Although [Tm(Bu(t))]HgR compounds exist as linear two-coordinate complexes in the solid state, 1H nuclear magnetic resonance spectroscopy indicates that the complexes exist in rapid equilibrium with their higher-coordinate [kappa2-Tm(Bu(t))]HgR and [kappa3-Tm(Bu(t))]HgR isomers in solution. Facile access to a higher-coordinate species is proposed to account for the exceptional reactivity of [Tm(Bu(t))]HgR relative to that of other two-coordinate mercury-alkyl compounds.

Synthesis and X-ray Absorption Spectroscopy Structural Studies of Cu(I) Complexes of HistidylHistidine Peptides: The Predominance of Linear 2-Coordinate Geometry

Modified His−His dipeptides have been reacted with copper(I) salts to model active-site Cu ions bound by contiguous His residues in certain oxygen-activating copper proteins, as well as amyloid β-peptide. Chelation of copper(I) by these ligands affords linear, two-coordinate complexes as studied structurally by X-ray absorption spectroscopy. The complexes are robust toward oxidation, showing limited to no reactivity with O2, and they bind CO weakly. Reaction with a third ligand (N-methylimidazole) affords complexes with a markedly different structure (distorted T-shaped) and reactivity, binding CO and oxidizing rapidly upon exposure to dioxygen.

Synthesis and structure of unusually stable linear copper(I) complexes with blue fluorescence

A new fluorescent ligand 2-(4′-aminophthalimidoethyl)pyridine ( L 2 ) has been synthesized. Solid state structures of L 2 and 2-(4′-aminophthalimidomethyl)pyridine ( L 1 ) have been determined by X-ray crystallography. While L 1 crystallizes in the non-centrosymmetric orthorhombic space group Fdd2, L 2 crystallizes in the monoclinic space group C2/c. The molecular packing in both systems is dominated by intermolecular N–H⋯O and N–H⋯N hydrogen bonds and relative bending of the planes defined by the pyridine and phthalimide moieties. An unusually stable two-coordinate complex of copper(I) with L 2 , Cu(L 2 ) 2 , has been synthesized upon in situ reduction of copper(II) at room temperature. This complex, which has been characterized by X-ray crystallography, crystallizes in the centrosymmetric space group C2/c with a linear N–Cu–N geometry. The Cu–N bond distance (1.89 Å) in Cu(L 2 ) 2 is found to be similar to that in Cu(L 1 ) 2 . Both the complexes display interesting structural feature, arising from weak Cu⋯O interactions (3.12 Å in Cu(L 1 ) 2 and 2.71 Å in Cu(L 2 ) 2 ) between the copper and oxygen atoms of the ClO 4 - counteranion, leading to a linear network with alternate ClO 4 - and Cu + ions. A 2-D network determined by intermolecular N–H⋯O hydrogen bonding is also observed. These complexes are found to be highly resistant toward oxidation both in the solid state and in solution. The new complex Cu(L 2 ) 2 , in which the metal center is more separated from the 4-aminophthalimide moieties, exhibits lesser stability than Cu(L 1 ) 2 . Close contact between copper and one of the imide oxygen atoms of the ligand framework was detected as 3.03 Å in Cu(L 1 ) 2 and 4.0 Å in Cu(L 2 ) 2 , indicating a relatively weaker electronic interaction in the later complex. Thus, the exceptional stability of these complexes is attributed to the electronic environment provided by the 4-aminophthalimide and perchlorate moieties on the metal center.

Halide Abstraction as a Route to Cationic Transition-Metal Complexes Containing Two-Coordinate Gallium and Indium Ligand Systems

Halide abstraction chemistry offers a viable synthetic route to the cationic two-coordinate complexes [{Cp*Fe(CO)2}2(μ-E)]+ (7, E = Ga; 8, E = In) featuring linear bridging gallium or indium atoms. Structural, spectroscopic, and computational studies undertaken on 7 are consistent with appreciable Fe−Ga π-bonding character; in contrast, the indium-bridged complex 8 is shown to feature a much smaller π component to the metal−ligand interaction. Analogous reactions utilizing the supermesityl-substituted gallyl or indyl precursors of the type (η5-C5R5)Fe(CO)2E(Mes*)X, on the other hand, lead to the synthesis of halide-bridged species of the type [{(η5-C5R5)Fe(CO)2E(Mes*)}2(μ-X)]+, presumably by trapping of the highly electrophilic putative cationic diyl complex [(η5-C5R5)Fe(CO)2E(Mes*)]+.

Virtual free ion magnetism and the absence of Jahn-Teller distortion in a linear two-coordinate complex of high-spin iron(II).

Mössbauer spectroscopy and dc magnetization measurements have been used to characterize the low temperature magnetism of a rigorously linear, two-coordinate complex of high-spin Fe(II), Fe[(C(Si(CH3)3]2 (1). The local C-Fe-C chromophore of 1 exhibits novel slow, single-ion paramagnetic relaxation and fully resolved magnetic hyperfine splitting of its zero field Mössbauer spectrum over the range approximately 100 to approximately 50K. The hyperfine field at 4.2 K is 152 T! This is the largest magnetic hyperfine field observed for iron to date regardless of spin, oxidation state, or coordination environment. This observation is attributable to the large unquenched orbital angular momentum corresponding to the degenerate ground (dxy, dx2-y2) orbital pair of 1 in local Dinfinityh symmetry. Maintenance of the ground-state degeneracy is required by the Jahn-Teller theorem leading to the unprecedented result that the magnitude of the magnetic moment of 1's 5Deltag ground state is essentially that of the parent free ion (5D4) ground term.

A bis-acetonitrile two-coordinate copper(I) complex: synthesis and characterization of highly soluble B(C(6)F(5))(4)(-) salts of [Cu(MeCN)(2)](+) and [Cu(MeCN)(4)](+).

Copper(I)-acetonitrile complexes are exceedingly useful starting materials for the synthesis of copper(I) complexes with polydentate ligands. To extend the utility of such chemistry to solution studies in relatively low-dielectric solvents (i.e., diethyl ether, toluene) and to aid in obtaining products amenable to X-ray diffraction studies, we have recently begun to employ counteranions such as B(C(6)F(5))(4)(-) for bioinorganic studies. Thus, the synthesis of [Cu(MeCN)(4)]B(C(6)F(5))(4) (1) is presented. Its recrystallization from CH(2)Cl(2)/pentane yields the linear, two-coordinate complex [Cu(MeCN)(2)]B(C(6)F(5))(4) (2), whose centrosymmetric X-ray structure shows that its Cu-N distance is significantly shorter than that in other two-coordinate Cu(I) complexes with nitrogen ligands or that in the tetrahedral complex [Cu(MeCN)(4)]ClO(4). Infrared spectroscopy indicates interesting and diagnostically useful differences between the nu(CN) of 1 and 2.

The directional reaction of hydrazine with silver complexes. Part 2. Influence of acidity and temperature

The influence of acidity and temperature on the reaction of two-coordinate silver complexes with N2H4 has been studied. The N2(F)% which represents the percentage of N2 formed by the four-electron oxidation of N2H4 [Reaction (A)] was greatly increased by the presence of a trace of CuII ion in the system. The N2(F)% was also enhanced by increasing the pH and temperature in the absence of CuII ion. In addition, the N2(F)% was linearly related to log β2 for the silver complexes. The log of the N2(O)% which represents the percentage of N2 formed by the one-electron oxidation of N2H4 [Reaction (B)] was linearly related to the 1/logβ2 value in the presence of CuII ions.

Two-Coordinate Tribenzylphosphine (PBz3) Complexes of Copper(I): Solid State 31P NMR Studies and the Crystal Structure of [Cu(PBz3)2]PF6

The structure of [Cu(PBz3)2]PF6 shows it to contain discrete [Cu(PBz3)2]+ cations with a “P2” donor set creating a linear two-coordinate environment for the copper(I) atom. Structural and solid-state 31P NMR parameters for [Cu(PBz3)2]PF6 and the related two-coordinate complex, [Cu(PBz3)2][CuBr2], are compared to those obtained for other three- and four-coordinate copper(I) complexes.

Metal-Ligand Bonding in Coinage Metal-Phosphine Complexes: The Synthesis and Structure of Some Low-Coordinate Silver(I)-Phosphine Complexes.

Reaction of AgBF(4) with 2 equiv of Ph(3)P in acetonitrile followed by recrystallization from dichloromethane/hexane yields the mixed phosphine-nitrile complex [(Ph(3)P)(2)AgNCCH(3)]BF(4) (I) as its dichloromethane solvate, I.0.5CH(2)Cl(2). This solvate crystallizes in the monoclinic space group C2/c with a = 22.928(5), b = 12.700(3), c = 25.156(5) Å, beta = 97.53(3) degrees, and Z = 8. The acetonitrile ligand in I is loosely bound to the metal center and easily lost, even in the solid state, without decomposition. Hence, recrystallization of dried samples of I.0.5CH(2)Cl(2) from CH(2)Cl(2)/hexane results in isolation of the novel low-coordinate phosphine complex [(Ph(3)P)(2)Ag]BF(4) (II). II crystallizes in the monoclinic space group C2/c with a = 21.733(9), b = 12.272(4), c = 24.356(9) Å, beta = 95.01(3) degrees, and Z = 8. In both cases, a weak interaction is present between a fluorine atom of the BF(4)(-) anion and the silver cation. However, these interactions appear to be essentially electrostatic rather than dative in nature, implying that I is best considered a three-coordinate silver complex and that II is a rare, structurally characterized example of a two-coordinate silver-phosphine complex. These solid-state geometric assignments are supported by (31)P NMR studies, which reveal a Ag-P coupling constant of 550 Hz for II, consistent with the presence of a linear two-coordinate complex in solution. The NMR data also indicate that the phosphine ligands are involved in exchange processes, which are accelerated by the presence of a donor solvent such as acetonitrile. Comparison of II with its gold analogue supports the previously stated concept that gold atoms are smaller than silver atoms. An analysis of 13 other isostructural pairs of silver and gold complexes culled from the crystallographic database lends further support to this concept.

The role of protonation and metal chelation preferences in defining the properties of mercury-binding coiled coils

To define the delicate interplay between metal chelation, protein folding and function in metalloproteins, a family of de novo-designed peptides was synthesized that self-assemble in aqueous solution to form two and three-stranded α-helical coiled coils. Each peptide contains a single Cys residue at an a or d position of the heptad repeat. Peptide association thus produces a Cys-rich coordination environment that has been used to bind Hg(II) ions. These peptides display a pH-dependent association, with trimers observed above the pKa of Glu side-chains and dimers below this value. Finite-difference Poisson-Boltzmann calculations suggest that the dimeric state decreases the unfavorable electrostatic interactions between positively charged Lys side-chains (relative to the trimer). The Cys-containing peptides bind Hg(II) in a position-dependent fashion. Cys at a positions form three-coordinate Hg complexes at high pH where the trimeric aggregation state predominates, and two-coordinate complexes at lower pH. A d position Cys, however, is only able to generate the two-coordinate complex, illustrating the difference in coordination geometry between the two positions in the coiled coil. The binding of Hg(II) was also shown to substantially increase the stability of the helical aggregates.

Structural, Far-IR, and Solid State 31P NMR Studies of Two-Coordinate Complexes of Tris(2,4,6-trimethoxyphenyl)phosphine with Copper(I) Iodide

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructural, Far-IR, and Solid State 31P NMR Studies of Two-Coordinate Complexes of Tris(2,4,6-trimethoxyphenyl)phosphine with Copper(I) IodideLisa-Jane Baker, Graham A. Bowmaker, Robert D. Hart, Peta J. Harvey, Peter C. Healy, and Allan H. WhiteCite this: Inorg. Chem. 1994, 33, 18, 3925–3931Publication Date (Print):August 1, 1994Publication History Published online1 May 2002Published inissue 1 August 1994https://doi.org/10.1021/ic00096a016RIGHTS & PERMISSIONSArticle Views213Altmetric-Citations31LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (702 KB) Get e-AlertsSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts

Chemistry and structural studies on the dioxygen-binding copper-1,2-dimethylimidazole system

Studies of copper complexes with the 1,2-dimethylimidazole (Me[sub 2]im) system have provided insights into the factors which control dioxygen (O[sub 2]) binding and activation in imidazole (histidine) ligated copper complexes and proteins. A two-coordinate complex [Cu(Me[sub 2]im)[sub 2]](PF[sub 6]) (1(PF[sub 6])) is formed by the reaction of 1,2-dimethylimidazole with [Cu(CH[sub 3]CN)[sub 4]](PF[sub 6]). Although 1 is unreactive toward O[sub 2] or CO, reaction with one additional molar equivalent of Me[sub 2]im yields a three-coordinate complex [Cu(Me[sub 2]im)[sub 3]](PF[sub 6])(2(PF[sub 6])) which reacts with O[sub 2](Cu/O[sub 2] = 2:1, manometry), producing the EPR silent dioxygen adduct, formulated as [Cu[sub 2](Me[sub 2]im)[sub 6](O[sub 2])][sup 2+] (3). The structure of 1 has been studied by X-ray crystallography; it crystallizes in the monoclinic space group C2/c with Z = 4, a = 14.877 (2) [angstrom], b = 15.950 (4) [angstrom], c = 6.931 (4) [angstrom], and [beta] = 108.54 (2)[degrees]. The linear two-coordinate Cu(I) structure is typical and contains crystallographically equivalent Cu-N(imid) distances of 1.865 [angstrom]. The structures of 2 and 3 have been studied by X-ray absorption spectroscopy, using imidazole group-fitting and full curved-wave multiple scattering analysis. Complex 2 is best fit by a T-shaped structure involving two short (1.89 [angstrom]) and onemore » longer (2.08 [angstrom]) Cu-N(imid) distances. Absorption edge data confirm that the dioxygen complex 3 should be formulated as a Cu(II)-peroxo species. The EXAFS of 3 can be fit by either of two models, A and B. 50 refs., 9 figs., 3 tabs.« less

Structural, far-IR and phosphorus-31 NMR studies of two-coordinate complexes of tris(2,4,6-trimethoxyphenyl)phosphine with silver(I) halides

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructural, far-IR and phosphorus-31 NMR studies of two-coordinate complexes of tris(2,4,6-trimethoxyphenyl)phosphine with silver(I) halidesLisa Jane Baker, Graham A. Bowmaker, David Camp, Effendy, Peter C. Healy, Hubert Schmidbaur, Oliver Steigelmann, and Allan H. WhiteCite this: Inorg. Chem. 1992, 31, 17, 3656–3662Publication Date (Print):August 1, 1992Publication History Published online1 May 2002Published inissue 1 August 1992https://doi.org/10.1021/ic00043a029RIGHTS & PERMISSIONSArticle Views229Altmetric-Citations50LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (822 KB) Get e-AlertsSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts

Cyclohexyneplatinum(0) Complexes Containing Di-t-butylphenylphosphine, t-butyldiphenylphosphine or Trimethylphosphine

Cyclohexyneplatinum (0) complexes Pt(C6H8)L2 [L = PBut2Ph(4), PbutPh2(5)] analogous to the known complex (3) (L=PPh3) have been prepared by reaction of the two-coordinate complexes PtL2 with 1,2-dibromocyclohexene and 1% sodium amalgam. The corresponding tricyclohexylphosphine complex is formed by a similar reaction but it could not be isolated in a pure state. Attempts to prepare analogues of (4) and (5) containing cycloheptyne or cyclooctyne were unsuccessful, possibly because the bulky t-butyl groups of the tertiary phosphines hinder coordination of the larger rings. Bulky tertiary phosphines do not displace PPh3 from (3) but trimethylphosphine reacts with (3) to give successively Pt(C6H8)(PMe3)2(PPh3) (10) and Pt(C6H8)(PMe3)2 (11), as shown by 31P{1H) n.m.r. spectroscopy. The tertiary phosphines in these complexes equilibrate rapidly at room temperature in benzene and only (10) can be isolated as a solid from the reaction. Complexes (4) and (5) react with HCl (1 molar proportion) to give n1-cyclohexen-l-yl complexes trans- PtCl (C6H9)L2 [L= PBut2Ph(6), PButPh2 (7)]. In the absence of air, (4) reacts with methanol at 65°C to give the hydrido complex trans- PtH (C6H9)(PBut2Ph)2 (8). In the presence of oxygen from the air, however, the main product is the dioxygen complex Pt(O2)(Pbut2Ph)2 (9). This represents an unusual example of complete displacement of cyclohexyne from a platinum(0) complex by a π-acceptor ligand.

Electrochemical reduction of platinum(II) complexes containing bidentate tertiary phosphine ligands: evidence for the generation of non-linear two-coordinate complexes

The electrochemical reduction of [PtCl 2L 2]+ L 2* (L 2 and L 2* = Ph 2PCH 2CH 2 PPh 2, dppe; Cy 2PCH 2CH 2PCy 2, dcpe; nBu 2PCH 2CH 2P nBu 2, dbpe) systems may proceed via two different routes. Path 1 involves reduction of [PtCl 2L 2] to produce [PtL 2] which is trapped by L 2* to form [PtL 2L 2*]. Path 2 involves prior reaction of [PtCl 2L 2] with L 2* to form [PtL 2L 2*] 2+ which is reduced to form [PtL 2L 2*]. The extent of prior reaction of [PtCl 2L 2] with L 2* has been monitored by both cyclic voltammetry, which detects only the electroactive components in solution, and by 31P{ 1H} NMR spectroscopy, which allows structural assignments to be made. Bulk electrolyses have been performed at potentials sufficient to reduce both [PtCl 2L 2] and [PtL 2L 2*] 2+ and also at potentials sufficient to reduce [PtL 2L 2*] 2+ but not to reduce [PtCl 2L 2]. Product analyses by 31P{ 1H} NMR spectroscopy show that path 1 is operative in sterically congested systems, path 2 is operative in uncongested systems, and both pathways may be operative in systems with intermediate steric congestion. Reactions via path 2 produce [PtL 2L 2*] efficiently, whereas reactions via path 1 are complicated by alternative trapping reactions of [PtL 2] with the solvent/electrolyte system which compete with trapping by L 2*.

Two-coordinate complexes of univalent coinage metals with Group VB ligands and the crystal structures of bis(tricyclopentylarsine)silver perchlorate and bis(cyclopentyldiphenylphosphine)silver perchlorate

Two-coordinate complexes of univalent coinage metals with Group VB ligands and the crystal structures of bis(tricyclopentylarsine)silver perchlorate and bis(cyclopentyldiphenylphosphine)silver perchlorate

Ligation of phosphorus ligands to silver(I). 1. Coordination of one to four P(NR2)3 ligands and the structure of a nonlinear two-coordinate complex

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLigation of phosphorus ligands to silver(I). 1. Coordination of one to four P(NR2)3 ligands and the structure of a nonlinear two-coordinate complexS. M. Socol, R. A. Jacobson, and J. G. VerkadeCite this: Inorg. Chem. 1984, 23, 1, 88–94Publication Date (Print):January 1, 1984Publication History Published online1 May 2002Published inissue 1 January 1984https://doi.org/10.1021/ic00169a019RIGHTS & PERMISSIONSArticle Views248Altmetric-Citations49LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (959 KB) Get e-AlertsSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts