Molecular Structure Of Bis Research Articles

Reductive nitrosylation of tetraoxometallates. Part 16. Generation and reactivity of the Os(NO)3+ moiety. Synthesis, characterisation, and electrochemistry of oxalato- and halogeno-nitrosyl derivatives of osmium; crystal and molecular structure of bis(1,10-phenanthrolinium) pentabromonitrosylosmate dihydrate

Osmium tetraoxide smoothly reacts with NH2OH·HCl in the presence of oxalate ion furnishing solid complexes A[Os(NO)(C2O4)2]·H2O (A = K, 1a; PPh4, 1b; or AsPh4, 1c). The complex anion possesses a square-pyramidal structure, as is evident from analytical, spectroscopic (IR, UV/VIS), and thermoanalytical data. The complexes react with concentrated HX (X = Cl, Br or I) forming besides [Os(NO)(C2O4)Cl3]2–3, [Os(NO)Br4(H2O)]–4a and [Os(NO)Br4]–4b; [Os(NO)X5]2–(X = Cl, 2a; Br, 2b; or I, 2c) as the main product. The latte, (X = Cl or I) reacts with phen (1,10-phenanthroline) producing [Os(NO)X3(phen)], whereas the bromo complex furnishes [Hphen]2[Os(NO)Br5]·2H2O, 5c. The crystal and molecular structure of 5c has been determined by Patterson and Fourier methods and refined to R= 0.052 for 1221 unique reflections with I > 3σ(I). The crystals are monoclinic, space group P21/c, a= 7.371(1), b= 13.646(1), c= 14.001(2)A, β= 99.88(1)° and Z= 2. The structure consists of [Hphen]+ cations, disordered [Os(NO)Br5]2– anions, and two water molecules of crystallisation; the anions have approximate octahedral geometry with a near linear nitrosyl ligand in the axial positions. Cyclic voltammograms of compounds 2a and 2b show a reversible oxidative response in MeCN at E°298+0.94 and +0.96 V respectively, while 2c shows an irreversible oxidation peak at +1.08 V in dimethylformamide, indicating the ease of oxidation of Os(NO)3+→ Os(NO)4+(confirmed by ESR study), increasing in the series Cl– < Br– < I–.

Molecular structure of bis(1-methylimidazole)( meso-tetraphenylporphinato)iron(III) perchlorate

The preparation and characterization of the bis(1-methylimidazole)( meso-tetraphenylporphinato)iron(III) perchlorate complex is described. The molecular structure has been determined by an X-ray crystal structure determination. The complex has two axial imidazole ligands that are nearly coplanar and close to eclipsing an FeN p bond. A rhombic distortion in the equatorial bonds is seen; the set that is approximately perpendicular to the imidazole ligand planes has an average value of 1.973(6) Å while the other set has an average value of 1.991(4) Å. The axial FeN(Im) bond distances average to 1.974 Å. The complex has a rhombic EPR spectrum and the derived crystal field parameters are reported. Crystal data: a=10.730(1), b=21.207(4), c=21.231(4) Å, and β= 96.82(1)°, monoclinic, space group P2 1/ n, V=4796.8 Å 3, Z=4, R 1=0.066, R 2=0.074 based on 6429 observed data.

Iron(II) complexes of ortho-functionalized naphthoquinones. 2. Crystal and molecular structure of bis(aquo)bis(lawsonato)iron(II) and intermolecular magnetic exchange interactions in bis(3-aminolawsonato)iron(II)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIron(II) complexes of ortho-functionalized naphthoquinones. 2. Crystal and molecular structure of bis(aquo)bis(lawsonato)iron(II) and intermolecular magnetic exchange interactions in bis(3-aminolawsonato)iron(II)Prafulla Garge, Rajeev Chikate, Subhash Padhye, Jean Michel Savariault, Philippe De Loth, and Jean Pierre TuchaguesCite this: Inorg. Chem. 1990, 29, 18, 3315–3320Publication Date (Print):September 1, 1990Publication History Published online1 May 2002Published inissue 1 September 1990https://doi.org/10.1021/ic00343a012RIGHTS & PERMISSIONSArticle Views276Altmetric-Citations68LEARN 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 (798 KB) Get e-AlertsSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts

ChemInform Abstract: The Lewis Acidity of Organylbismuth(III) Compounds. New Organylbismuth(III) Dithiocarbamate Chemistry. The Crystal and Molecular Structure of Bis(diethyldithiocarbamato)phenylbismuth(III) and Bis(diethyldithiocarbamato)(2‐(2′‐pyridyl)phenyl)bismuth(III).

AbstractThe Lewis acidity of (III) is investigated by study of the reactions with (IV), Na propionate and (VI).

ChemInform Abstract: Synthesis and Characterization of Homo‐ and Heteronuclear Mixed Thiolate Phosphine Complexes with Ni(II), Pd(II), and Pt(II). Crystal and Molecular Structure of Bis(μ‐(3‐dimethylamino‐1‐propanethiolato))‐bis((1,2‐bis(diphenylphosphino)et# hane)nickel(II)) Tetraphenylborate.

AbstractThe cationic complexes (III) and their neutral analogues (VI) are obtained as shown.

Synthesis and characterization of homo- and hetero-nuclear mixed thiolate phosphine complexes with NiII, PdII, and PtII. Crystal and molecular structure of bis[µ-(3-dimethylamino-1-propanethiolato)]-bis{[1,2-bis(diphenylphosphino)-ethane]nickel(II)} tetraphenylborate

The following families of complexes have been prepared and characterized: [M{S(CH2)3NHMe2}2-(dppe)][BPh4]2, dppe = Ph2PCH2CH2PPh2, M = Ni, Pd, or Pt; [M{S(CH2)3NMe2}2(dppe)], M = Pd or Pt; [(dppe)M{µ-S(CH2)3NMe2}2M′(dppe)][BPh4]2(M = M′= Ni, Pd, or Pt; M = Ni, M′= Pd; M = Ni, M′= Pt; M = Pd, M′= Pt); and [Ni{Pt[µ-S(CH2)3NMe2]2(dppe)}2][BPh4]2. Infrared spectra indicate that within each family the complexes have the same structure. Crystals of the homonuclear nickel dimer are triclinic, space group P, with a= 14.346(1), b= 14.037(1), c= 13.207(1)A, α= 105.79(1), β= 90.81(1), and γ= 113.06(1)°. The crystal structure consists of centrosymmetric binuclear thiolate-bridged cations and anions, well separated. The corresponding homonuclear complexes of PdII and PtII are isomorphous. The co-ordination of the metal atoms in the trinuclear complex [(dppe)Pt(µ-SR)2Ni(µ-SR)2Pt(dppe)]2+[R =(CH2)3NMe2], has been deduced from 31P-{1H} n.m.r. data. In solution the platinum mononuclear complexes and the nickel dimeric species are the most stable.

Synthesis, characterization and structure of carboxylate derivatives of bis(methylcyclopentadienyl)titanium(IV)

Seventeen bis-carboxylate derivatives of bis(methylcyclopentadienyl)titanium have been prepared by the reaction of bis(methylcyclopentadienyl)titanium dichloride with the appropriate sodium salts of substituted benzoates. They have been characterized by elemental analysis, IR and 1H NMR. When treated with electrophilic reagents such as SOCl 2, CH 3COCl and HX, (CH 3C 5H 4) 2TiX 2 were obtained. The crystal and molecular structure of bis(methylcyclopentadienyl)bis( o-methylbenzoate)titanium has been determined by X-ray diffraction. The compound crystallizes in the monoclinic group P2 1/ c with four molecules in a cell having a = 8.098(3), b = 28.747(4), c = 10.374(3) Å, β = 95.48(2)°. The molecules have a distorted tetrahedral structure in which the titanium atom is attached to two η 5-CH 3C 5H 4 groups and two monodentate o-methylbenzoate ligands (TiC, 2.323–2.409 Å; TiO, 1.979(3) and 1.961(3) Å; OTiO, 90.5(3)°; (cent-CH 3C 5H 4)Ti (cent-CH 3C 5H 4), 130.1(3)°.

New and general route to the synthesis of oxopolymetalates via peroxometalates in aqueous medium: synthesis and crystal and molecular structure of bis[bis(triphenylphosphine)nitrogen(1+)] nonadecaoxohexatungstate(2-)

New and general route to the synthesis of oxopolymetalates via peroxometalates in aqueous medium: synthesis and crystal and molecular structure of bis[bis(triphenylphosphine)nitrogen(1+)] nonadecaoxohexatungstate(2-)

127I Mössbauer studies of oxygen bonded iodine complexes. 2. Aryliodine(III)carboxylates; the crystal and molecular structure of bis(trifluoroacetato)pentafluorophenyliodine(III), (C6F5)I(O2CCF3)2

The 127I Mössbauer spectra of a series of mono- and diaryliodine(III) carboxylates have been recorded at 4.2 K. The observed parameters are shown to be strongly dependent on the primary bonding arrangement about iodine only and the secondary bonding interactions have little or no effect. The crystal and molecular structure of bis(trifluoroacetato)pentafluorophenyliodine(III), (C6F5)I(O2CCF3)2, has been determined. Crystals are triclinic, of space group [Formula: see text], witsh a = 5.732(2) Å, b = 12.127(4) Å, c = 29.658(9) Å, α = 116.53(2)°, β = 98.02(2)°, γ = 117.09(2)°, V = 1482.0(8) Å3, Dc = 2.33 g cm−3 for Z = 4, and R1 = 0.0420 (R2 = 0.0431) for 2722 reflections with I &gt; 3σ(I). The two independent molecules in the asymmetric unit have essentially the same primary geometry about the central iodine, a distorted T-shaped AX3E2 arrangement. Keywords: 127I Mössbauer, aryliodine(III) carboxylates, crystal structure, (C6F5)I(O2CCF3)2.

ChemInform Abstract: Crystal Structure and Spectroscopic Studies of Bis(N‐2‐pyridinylcarbonyl‐2‐pyridinecarboximidato)copper(II) Monohydrate. Local Bonding Effects

Abstract The crystal and molecular structure of bis(N-2- pyridinylcarbonyl-2-pyridinecarboximidato)copper(II) monohydrate, Cu(BPCA)2·H2O, has been determined from single crystal X-ray data. It crystallizes in the monoclinic space group P21/c with four formula units in a cell of dimensions: a = 8.917(1), b = 8.932(1), c = 28.794(17) A, β= 95.49(2)°.Least- squares refinement of 2754 reflections with I > 2.5σ(I) and 379 parameters gave a final R = 0.037 (Rw = 0.036). The structure consists of discrete neutral Cu(BPCA)2 entities linked two by two through water molecules hydrogen bonded to ligand carbonyl groups. The coordination geometry around copper ions can approximately be described as orthorhombically distorted octahedral. EPR and ligand field spectroscopic results have been analyzed in terms of a static Jahn-Teller distortion, and bonding parameters have been derived from EPR hyperfine and superhyperfine structures in the spectra of copper(II)-doped Zn(BPCA)2·H2O powder samples and frozen solution.

The crystal and molecular structure of bis(piperidínyl-dithiocarbamato)selenium(II)

Article The crystal and molecular structure of bis(piperidínyl-dithiocarbamato)selenium(II) was published on August 1, 1989 in the journal Zeitschrift für Kristallographie - Crystalline Materials (volume 187, issue 1-4).

1,4-Benzodiazepines as ligands. Synthesis, characterization and crystal and molecular structure ofbis(8-chloro-6-(o-chlorophenyl)-1-methyl-4H-s-triazolo[4,3-a]1,4-benzodiazepine (triazolam)) cadmium (II) dichloride

The compound C34H24CdN8Cl6 was prepared and characterized by means of X-ray, IR, and Raman measurements. The crystals are monoclinic, space groupC2/c, (No. 14) witha=22.284(3),b=14.501(2),c=14.595(2) Aβ=129.77(1)° andZ=4. The structure was solved by the heavy-atom method, and least-squares refinement of structural parameters led to a conventionalR factor of 0.040 for 2379 independent reflections. The structure consists of discrete molecules, in which the Cd atom is coordinated in a distorted tetrahedral geometry by two chlorine atoms and by two nitrogens of two triazolic rings of triazolam molecules. Infrared and Raman bands are assigned on the basis of the known structure. An electronic charge calculation has been performed on the unbonded ligand.

Comparison of the electronic structures of homo- and heteronuclear butterfly clusters containing carbide, nitride, and oxide ligands. Crystal and molecular structure of bis[diphenylphosphine] iminium dodecacarbonylnitridotetraruthenate(1-)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComparison of the electronic structures of homo- and heteronuclear butterfly clusters containing carbide, nitride, and oxide ligands. Crystal and molecular structure of bis[diphenylphosphine] iminium dodecacarbonylnitridotetraruthenate(1-)Suzanne Harris, Margaret L. Blohm, and Wayne L. GladfelterCite this: Inorg. Chem. 1989, 28, 12, 2290–2297Publication Date (Print):June 1, 1989Publication History Published online1 May 2002Published inissue 1 June 1989https://doi.org/10.1021/ic00311a010RIGHTS & PERMISSIONSArticle Views71Altmetric-Citations22LEARN 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 (3 MB) Get e-AlertsSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts

Crystal structure and spectroscopic studies of bis( N-2-pyridinylcarbonyl-2-pyridinecarboximidato)copper(II) monohydrate. Local bonding effects

The crystal and molecular structure of bis( N-2- pyridinylcarbonyl-2-pyridinecarboximidato)copper( II) monohydrate, Cu(BPCA) 2·H 2O, has been determined from single crystal X-ray data. It crystallizes in the monoclinic space group P2 1/ c with four formula units in a cell of dimensions: a = 8.917(1), b = 8.932(1), c = 28.794(17) Å, β= 95.49(2)°.Least- squares refinement of 2754 reflections with I > 2.5σ( I) and 379 parameters gave a final R = 0.037 ( R w = 0.036). The structure consists of discrete neutral Cu(BPCA) 2 entities linked two by two through water molecules hydrogen bonded to ligand carbonyl groups. The coordination geometry around copper ions can approximately be described as orthorhombically distorted octahedral. EPR and ligand field spectroscopic results have been analyzed in terms of a static Jahn-Teller distortion, and bonding parameters have been derived from EPR hyperfine and superhyperfine structures in the spectra of copper(II)-doped Zn(BPCA) 2·H 2O powder samples and frozen solution.

Molecular structure of bis(L-leucinato)zinc(II) and single-crystal EPR spectra of the substitutionally copper(II)-63-doped complex

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular structure of bis(L-leucinato)zinc(II) and single-crystal EPR spectra of the substitutionally copper(II)-63-doped complexC. A. Steren, R. Calvo, O. E. Piro, and B. E. RiveroCite this: Inorg. Chem. 1989, 28, 10, 1933–1938Publication Date (Print):May 1, 1989Publication History Published online1 May 2002Published inissue 1 May 1989https://doi.org/10.1021/ic00309a032RIGHTS & PERMISSIONSArticle Views116Altmetric-Citations19LEARN 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 (749 KB) Get e-AlertsSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts

Synthesis, spectroscopic and magnetic properties of nickel(II) with N-protected amino acids: crystal and molecular structure of bis(N-acetylglycinato)tetraaquonickel(II)

Nickel(II) complexes of the general formula NiL 2· nH 2O have been prepared with various N-protected amino acids and characterized by thermogravimetric, magnetic susceptibility, IR and UV spectroscopy. The crystal structure of bis(N-acetylglycinato) tetraaquonickel(II) has been determined. The coordination around nickel is octahedral with two acetylglycine ligands trans to each other. Acetylglycine coordinates with nickel through a single oxygen of the carboxylate group, and the remaining four coordination sites are occupied by four water molecules. The structure is held together by strong intermolecular hydrogen bonding. Spectroscopic studies indicate that all complexes are octahedral in structure.

A reinvestigation of the structures of organotin sulphates and chromates, including the crystal and molecular structure of bis(trimethyltin) sulphate dihydrate

The structures of a group of triorganotin sulphates and chromates have been studied by 119Sn n.m.r. and Mössbauer spectroscopies. All the compounds (SnR3)2EO4·nH2O (R = Me, E = Cr, n= 0; R = Me or Bun, E = S, n= 0; R = Me, E = S, n= 2) form polymeric lattices in the solid state, although for (SnBun3)2SO4 an irregular lattice incorporating both four- and five-co-ordinate tin atoms is postulated. The structure of (SnMe3)2SO4·2H2O has been determined by an X-ray study. Crystal data: orthorhombic, space group Pbcn, a= 11.245(4), b= 12.695(5), c= 10.811(4)Å, Z= 4. The geometry about tin is trigonal bipyramidal with a trans-O2SnC3 stereochemistry about the metal, one of the axial sites being occupied by a molecule of hydration. Hydrogen bonding between oxygens of the anion and the solvate produces a three-dimensional network lattice.

Synthesis and properties of the bis(µ-thiosulphato-S)-bis(dinitrosylferrate)(2–) anion. Crystal and molecular structure of bis[bis(triphenylphosphoranylidene)-ammonium] bis(µ- thiosulphato-S)-bis(dinitrosylferrate)

Salts of the bis(µ-thiosulphato-S)-bis(dinitrosylferrate)(2–) anion [Fe2(S2O3)2(NO)4]2– can be prepared by reaction of iron(II)/thiosulphate mixtures either with nitric oxide or with sodium nitrite: the preparation using nitrite provides a convenient route to the 15N labelled anion [Fe2(S2O3)2(15NO)4]2–. The anion reacts readily with thiols RSH to provide good yields of [Fe2(SR)2(NO)4]. Crystals of [N(PPh3)2]2[Fe2(S2O3)2(NO)4] are triclinic, a= 10.999(5), b= 12.748(4), c= 14.020(7)A, α= 67.13(4), β= 83.31(4), γ= 93.87(3)°, space group P with Z= 1: the structure was solved using diffractometer data and refined to an R value of 0.034. The anion lies across a centre of inversion, and hence adopts the trans conformation. The 15N n.m.r. spectrum of [Fe2(S2O3)2(15NO)4]2– shows the presence of only the trans conformer in solution, and that upon exposure to air [Fe2(S2O3)2(15NO)4]2– is readily converted into [Fe4S3(15NO)7]–.

The electrochemical synthesis of neutral copper(II) complexes of schiff base ligands: The crystal structures of bis-{n-[2-(3-methylpyridyl)]-5-methoxysalicylideneiminato}copper(II) and bis-{n-[2-(6-metrylpyridyl)]-salicylideneiminato}copper(II)

Neutral copper(II) complexes of Schiff bases derived from substituted salicylaldehydes and 2-aminopyridine methyl derivatives have been synthesized by an electrochemical procedure. The crystal and molecular structure of bis{N-[2-(3-methylpyridyl)]-5-methoxysalicylideneiminato}copper(II) and of bis{N-[2-(6-methylpyridyl)]-salicylideneiminato}copper(II) have been determined by X-ray diffraction. The former compound crystallizes in the monoclinic space group C2/ c with four molecules in the unit cell and cell constants a = 16.784(2), b = 16.344(2) and c = 11.211(2) Å, and β = 124.08(1)°, while the other complex crystallizes in the monoclinic space group P2 1/ c with two molecules in a cell of dimensions a = 12.456(1), b = 7.812(2) and c = 12.047(2) Å, and β = 110.48(1)°. In both structures, the metals adopt square-planar coordination geometries and the pyridyl nitrogen atoms are not coordinated. The electronic and IR spectra of the complexes are discussed and related to the structure.

ChemInform Abstract: Organomercury Compounds. Part 30. The Synthesis and Crystal and Molecular Structure of Bis(2,4,6‐trichlorophenoxymethyl)mercury.

AbstractReaction of bis(bromomethyl)mercury (II), prepared in situ from diazomethane and mercuric bromide, with thallium(I) 2,4,6‐trichlorophenoxide (I) leads to the formation of the title compound (III).