Molecular Structure Of Tris Research Articles

Electronic and molecular structure of tris(2,2'-bipyridine)chromium(3+)

[Cr (bpy) 3 ] (PF 6 ) 3 et [Rh (bpy) 3 ] (PF 6 ) 3 cristallisent dans le systeme rhomboedrique, groupe d'espace R32 et leur structure est affinee respectivement jusqu'a R=0,048 et R=0,036

Organometallic complexes of bismuth: preparation and crystal and molecular structure of tris(pentacarbonylmanganese)bismuth

Organometallic complexes of bismuth: preparation and crystal and molecular structure of tris(pentacarbonylmanganese)bismuth

Some new complexes of thorium tetrachloride with substituted ureas; the crystal and molecular structure of tris( N,N′-dimethyl- N,N′-diphenylurea)-tetrachlorothorium(IV)

Thorium tetrachloride forms a 1:3 complex, ThCl 4·3L, with N,N-diethyl N′, N′-dimethylurea (dedmu); and 1:2 complexes with dedmu, N,N-diisopropyl N′, N′-dimethyl (dibdmu), N,N-diisobutyl- N′, N′-dimethyl (dibdmu), N,N-diisopropyl N′, N′-diphenyl (dipdpu), N,N,N′, N′-tetramethyl (tmu) and N,N,N′, N′-tetraethylurea (teu) have been obtained. A dichloromethane solvate, ThCl 4·3L·CH 2Cl 2, where L= N,N′-dimethyl- N′, N-diphenylurea (dmdpu), has also been obtained. The crystal and molecular structure of ThCl 4(dmdpu) 3·n-pentane has been determined from three dimensional X-ray diffraction data. The cell is triclinic, space group P 1 , with a=16.826(3), b=16.019(3), c=12.131(2) Å, α=11O.4(1), β=106.6(1) and γ=59.4(1)° and Z=2. Full matrix least-squares refinement with 7963 intensity observations reached convergency with R=0.053 and R w=0.058. The coordination polyhedron about the seven-coordinate thorium atom is a pentagonal bipyramid with two chlorine atoms in apical positions. The average bonding distances are ThO=2.392(5), ThCl eq=2.743(3) and ThCl ax=2.696(3) Å. The IR spectra of the complexes are also reported.

Molecular structure of tris(dipivaloylmethanato)yttrium(III) as studied by gas electron diffraction

The molecular structure of tris(dipivaloylmethanato)yttrium has been determined by gas phase electron diffraction. The molecule is monomeric and has a trigonal prismatic structure. The molecular parameters are as follows: r a(YO) = 2.230(5) Å, r a(CO) = 1.283(4) Å, r a(CC ring) = 1.411(8) Å, r a(CC tert) = 1.503(13) Å, r a(CC meth) = 1.553(6) Å, ∠OYO = 75.0(11)°, folding of the ligand about the O⋯O axis, θ =17.0(29)°.

Molecular structure of tris(dipivaloylmethanato)-praseodymium (III) as studied by gas electron diffraction

The molecular structure of tris(dipivaloylmethanato)praseodymium has been determined by gas-phase electron-diffraction. The experimental data are consistent with a monomeric trigonal prismatic structure. The molecular parameters are as follows: r a(PrO) = 2.331(7), r a(CO) = 1.273(5), r a(CC ring = 1.418(7), r a(CC tert) = 1.513(12), r a(CC meth) = 1.546(5) Å and ∠OPrO = 70.8(7)°, folding of the ligand about the O⋯O axis γ = 22.8(24)°.

Molecular structure of tris(dipivaloylmethanato)-erbium(III) as studied by gas electron diffraction

The molecular structure of tris(dipivaloylmethanato)erbium has been determined by gas-phase electron diffraction. The experimental data are consistent with a monomeric trigonal prismatic structure. The structural parameters are as follows: r a(ErO) = 2.218 ± 0.005, r a(CO) = 1.274 ± 0.004, r a(CC ring) = 1.405 ± 0.006, r a(CC text) = 1.513 ± 0.014, r a(CC meth) = 1.550 ± 0.006 Å, and ∠OErO = 75.0 ± 0.5°. The folding of the ligand about the OO axis is 22.2 ± 1.5°, and the t-butyl groups rotate freely.

Crystal and molecular structure of tris(ethylenediamine) cadmium(II) iodide, (NH2CH2CH2NH2)3CdI2

Article Crystal and molecular structure of tris(ethylenediamine) cadmium(II) iodide, (NH2CH2CH2NH2)3CdI2 was published on October 1, 1985 in the journal Zeitschrift für Kristallographie - Crystalline Materials (volume 171, issue 1-4).

Synthesis and structure of binuclear chromium(III) complexes with unfolded diamine Schiff bases of 1,3,5-triketones. Molecular structure of tris[7,7'-(1,2-ethanediyldinitrilo)bis(2,2-dimethyl-3,5-octanedionato)(2-)]dichromium(III)-6-pyridine-1-water, Cr2[(HPAA)2en]3en]3.6py.H2O

Synthesis and structure of binuclear chromium(III) complexes with unfolded diamine Schiff bases of 1,3,5-triketones. Molecular structure of tris[7,7'-(1,2-ethanediyldinitrilo)bis(2,2-dimethyl-3,5-octanedionato)(2-)]dichromium(III)-6-pyridine-1-water, Cr2[(HPAA)2en]3en]3.6py.H2O

Structural features of group V A xanthates. The crystal and molecular structures of tris( O-isopropylxanthatoarsenic(III), antimony(III) and -bismuth(II)

The crystal structures of the title compounds, M(S 2CO iC 3H 7) 3, M = As(III), ( 1); Sb(III), ( 2); and Bi(III), ( 3) have been determined by three dimensional X-ray diffraction techniques and refined by a least square method. Crystals of ( 1) and ( 2) are isomorphous and both crystallize in the rhombohedral space group R 3 , with unit cell parameters for ( 1) a hex = 11.559(2), c hex = 28.131(3) Å and for ( 2) a hex = 11.696(2) and c hex = 28.135(2) Å, Z = 6. The central metal atom in both ( 1) and ( 2) is coordinated by three asymmetrically chelating xanthate ligands [AsS 2.305(2) and 2.978(2) Å and SbS 2.508(1) and 3.006(1) Å] which form a distorted octahedral environment consistent with the presence of a stereochemically active lone pair of electrons. Crystals of ( 3) are orthorhombic, space group Pnma, Z = 4 with dimensions a = 11.003(3), b = 20.833(4) and c = 9.428(2) Å. The environment of the bismuth atom in ( 3) is seven coordinate and is comprised of six sulphur atoms, derived from three asymmetrically coordinating xanthate ligands, and a bridging sulphur atom from a neighbouring molecule which results in the formation a polymeric array. For ( 1) final R and R W 0.050 and 0.047 respectively for 936 reflections [ I ⩾ 3σ( I); (2) R 0.040, R w 0.040 for 1455 reflections I ⩾ 2σ( I)]; and ( 3) R 0.052, R w 0.039 for 1796 reflections [ I ⩾ 2σ( I).

ChemInform Abstract: THE CRYSTAL AND MOLECULAR STRUCTURES OF TRIS(O‐ETHYLXANTHATO)‐GALLIUM(III) AND INDIUM(III)

Chemischer InformationsdienstVolume 16, Issue 13 Physical Organic Chemistry ChemInform Abstract: THE CRYSTAL AND MOLECULAR STRUCTURES OF TRIS(O-ETHYLXANTHATO)-GALLIUM(III) AND INDIUM(III) B. F. HOSKINS, B. F. HOSKINSSearch for more papers by this authorE. R. T. TIEKINK, E. R. T. TIEKINKSearch for more papers by this authorR. VECCHIET, R. VECCHIETSearch for more papers by this authorG. WINTER, G. WINTERSearch for more papers by this author B. F. HOSKINS, B. F. HOSKINSSearch for more papers by this authorE. R. T. TIEKINK, E. R. T. TIEKINKSearch for more papers by this authorR. VECCHIET, R. VECCHIETSearch for more papers by this authorG. WINTER, G. WINTERSearch for more papers by this author First published: April 2, 1985 https://doi.org/10.1002/chin.198513051AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat No abstract is available for this article. Volume16, Issue13April 2, 1985 RelatedInformation

The crystal and molecular structures of tris( O-ethylxanthato)-gallium(III) and indium(III)

The crystal structures of the title compounds, Ga(S 2COEt) 3 ( 1) and In(S 2COEt) 3 ( 2) have been determined by three dimensional X-ray diffraction methods. Both compounds crystallize in the trigonal space group R 3 - with Z = 6. Cell dimensions for ( 1) are a hex 15.065(1) and c hex 13.421(1) Å and for ( 2) 15.319(3) and 13.522(4) Å. Final R. and R w values 0.044 and 0.049 for ( 1) and 0.040 and 0.037 for ( 2) for 668 and 1153 statistically significant reflections respectively. The complexes are isostructural. The metal centres are in a distorted octahedral environment, the distortion arising from the restricted bite distance of the xanthate ligands. For each compound, each xanthate moiety chelates the metal atom with similar M-S bonds.

Electron-transfer barriers and metal-ligand bonding as a function of metal oxidation state. 3. Crystal and molecular structures of tris(2,2'-bipyridine)nickel(III) triperchlorate-2-acetonitrile-0.5-dichloromethane

The structure of tris(2,2'-bipyridine)nickel(III) triperchlorate-2-acetonitrile-0.5-dichloromethane, (Ni(C/sub 10/H/sub 8/N/sub 2/)/sub 3/)(Cl-O/sub 4/)/sub 3/.2CH/sub 3/CN.0.5CH/sub 2/Cl/sub 2/, has been determined. The nickel(III) complex crystallizes inthe triclinic crystal system, space group P1, with a = 11.193 (1) A, b = 17.634 (3) A, c = 10.494 (2) A, ..cap alpha.. = 95.41 (1)/sup 0/, ..beta.. = 107.02 (2)/sup 0/, ..gamma.. = 95.28 (1)/sup 0/, and Z = 2. The structure was refined to a final R value of 0.096. The coordination sphere consists of the six nitrogen atoms of the three bipyridine ligands in a tetragonally distorted octahedral arrangement about the nickel. The six nickel-nitrogen bonds form three sets with two pairs of longer equatorial bonds, 2.022 (6) and 2.000 (5) A, and a pair of shorter axial bonds, 1.924 (6) A. The metal-ligand bond distances in Ni(bpy)/sub 3//sup 3 +/ and related complexes are rationalized in terms of their electronic configurations. The electron-transfer barrier for the Ni(bpy)/sub 3//sup 3 +/-Ni(bpy)/sub 3//sup 2 +/ exchange is related to the bond length differences in the two oxidation states and is compared with the barrier for electron transfer between other polypyridine complexes. 52 references, 2 figures, 4 tables.

.eta.2-Acyl coordination and .beta.-carbon-hydrogen bond interaction in acyl complexes of molybdenum. Crystal and molecular structures of tris(trimethylphosphine)carbonylchloro(.eta.2-trimethylsilylacetyl)molybdenum [Mo(.eta.2-COCH2SiMe3)Cl(CO)(PMe3)3] and the cyclic complex [cyclic] Mo(COCH3)(S2CNMe2)(CO)(PMe3)2

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT.eta.2-Acyl coordination and .beta.-carbon-hydrogen bond interaction in acyl complexes of molybdenum. Crystal and molecular structures of tris(trimethylphosphine)carbonylchloro(.eta.2-trimethylsilylacetyl)molybdenum [Mo(.eta.2-COCH2SiMe3)Cl(CO)(PMe3)3] and the cyclic complex [cyclic] Mo(COCH3)(S2CNMe2)(CO)(PMe3)2Ernesto Carmona, Luis Sanchez, Jose M. Marin, Manuel L. Poveda, Jerry L. Atwood, Ralph D. Priester, and Robin D. RogersCite this: J. Am. Chem. Soc. 1984, 106, 11, 3214–3222Publication Date (Print):May 1, 1984Publication History Published online1 May 2002Published inissue 1 May 1984https://doi.org/10.1021/ja00323a025RIGHTS & PERMISSIONSArticle Views139Altmetric-Citations53LEARN 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 (1 MB) Get e-AlertsSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts

Determination by electron diffraction of the molecular structure of tris(trimethylsilyl)methylphosphine in the gas phase

The molecular structure of (Me3Si)3CPH2 in the gas phase has been determined by electron diffraction. Important bond lengths (ra) are Si–C 194.1(5), Si–Me 188.3(2), and P–C 180.8(9) pm. Steric strain within the tris(trimethylsilyl)methyl group is relieved by (a) compression of the methyl groups within each trimethylsilyl group, so that the Me–Si–Me angles are only 104.3(4)°, (b) tilting of the trimethylsilyl groups by 7.3(15)° away from each other, and (c) twisting of the trimethylsilyl groups by 21.2(4)° away from the fully staggered conformation.

ChemInform Abstract: ELECTRON‐TRANSFER BARRIERS AND METAL‐LIGAND BONDING AS A FUNCTION OF METAL OXIDATION STATE. 2. CRYSTAL AND MOLECULAR STRUCTURES OF TRIS(2,2′‐BIPYRIDINE)COBALT(II) DICHLORIDE‐2‐WATER‐ETHANOL AND TRIS(2,2′‐BIPYRIDINE)COBALT(I) CHLORIDE‐WATER

Chemischer InformationsdienstVolume 14, Issue 46 Physical Organic Chemistry ChemInform Abstract: ELECTRON-TRANSFER BARRIERS AND METAL-LIGAND BONDING AS A FUNCTION OF METAL OXIDATION STATE. 2. CRYSTAL AND MOLECULAR STRUCTURES OF TRIS(2,2′-BIPYRIDINE)COBALT(II) DICHLORIDE-2-WATER-ETHANOL AND TRIS(2,2′-BIPYRIDINE)COBALT(I) CHLORIDE-WATER D. J. SZALDA, D. J. SZALDASearch for more papers by this authorC. CREUTZ, C. CREUTZSearch for more papers by this authorD. MAHAJAN, D. MAHAJANSearch for more papers by this authorN. SUTIN, N. SUTINSearch for more papers by this author D. J. SZALDA, D. J. SZALDASearch for more papers by this authorC. CREUTZ, C. CREUTZSearch for more papers by this authorD. MAHAJAN, D. MAHAJANSearch for more papers by this authorN. SUTIN, N. SUTINSearch for more papers by this author First published: November 15, 1983 https://doi.org/10.1002/chin.198346076AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume14, Issue46November 15, 1983 RelatedInformation

Electron-transfer barriers and metal-ligand bonding as a function of metal oxidation state. 2. Crystal and molecular structures of tris(2,2'-bipyridine)cobalt(II) dichloride-2-water-ethanol and tris(2,2'-bipyridine)cobalt(I) chloride-water

The structures of tris(2,2'-bipyridine)cobalt(II) dichloride-2-water-ethanol, (Co(C/sub 10/H/sub 8/N/sub 2/)/sub 3/)Cl/sub 2/2H/sub 2/OC/sub 2/H/sub 5/OH (1), and tris(2,2'-bipyridine)cobalt(I) chloride-water, Co(C/sub 10/H/sub 8/N/sub 2/)/sub 3/ClH/sub 2/O (2), have been determined in order to compare bonding of the high-spin d/sup 7/ and high-spin d/sup 8/ configurations and to better understand the electron-transfer reactivity of this couple. Compound 1 crystallizes in the hexagonal crystal system, space group P6/sub 5/22, with a = 13.403 (2) A, c = 62.566 (10) A, and Z = 12. The structure refined to a final R value of 0.056. The coordination spere consists of the six nitrogen atoms of the three bipyridine ligands in an octahedral arrangement about the cobalt with an average Co-N bond length of 2.128 (8) A. One of the chloride ions is surrounded by twelve C-H Cl hydrogen bonds involving the H3 and H3' protons on the bipyridine ligands. Compound 2 crystallizes in the orthorhombic crystal system, space group Pna2/sub 1/, with a = 9.713 (6) A, b = 21.666 (10) A, c = 13.062 (7) A, and Z = 4. The structure refined to a final R value of 0.084. The geometry of the coordination sphere of 2 is almost identical with that ofmore » 1, with an average Co-N bond length of 2.11 (2) A. Hydrogen bonding between the H3 and H3' protons on the bipyridine ligand and the chloride ion is also observed in 2. The C-H Cl hydrogen bonding observed in these complexes and the bond length changes in 1, 2, and tris(2,2'-bipyridine)cobalt(III) are discussed and related to electron-transfer barriers for the series. 48 references, 1 figure, 9 tables.« less

X-ray and neutron diffraction studies of the crystal and molecular structures of tris(ethylene)platinum and bis(ethylene)(tetrafluoroethylene)platinum

The structures of tris(ethylene)platinum and bis(ethylene (tetrafluoroethylene)platinum have been established by X-ray and neutron diffraction experiments. Tris(ethylene)platinum [Pt(C 2 H 4 ) 3 ] (I), formed by the displacement of 1, 5-cyclooctadiene from bis(1, 5-cyclooctadiene)platinum by ethylene, crystallizes in the trigonal space group R3̅m ( a = b = 7.225(4), c = 11.054(7) Ǻ, 120K) and [Pt(C 2 H 4 ) 2 (C 2 F 4 )] (II), obtained by the replace­ment of one ethylene ligand in (I) by tetrafluoroethylene, is shown to be triclinic, space group A1̄ with a = 8.680(3), b = 7.432(3), c = 12.716(6), Ǻ α = 90.13(4), β = 109.42(3), γ = 90.17(3)° (155 K). In both complexes, the six ligated carbon atoms are coplanar with the Pt atom at distances dependent primarily on the nature of the substituent at the contact carbon atom: mean Pt–C(H) 2.218(2), mean Pt–C(F) 2.031(5). Concomi­tant variations are recorded for the C═C separations, namely C═C(H), 1.382(7); C═C(F), 1.435(6). (I) exhibits a positional disorder of the ethylene ligands between two equivalent sites.

ChemInform Abstract: X‐RAY CRYSTAL AND MOLECULAR STRUCTURE OF TRIS(HYDRIDOTRIS(PYRAZOL‐1‐YL)BORATO)YTTERBIUM(III), YB(HBPZ3)3

Chemischer InformationsdienstVolume 14, Issue 4 Physical Organic Chemistry ChemInform Abstract: X-RAY CRYSTAL AND MOLECULAR STRUCTURE OF TRIS(HYDRIDOTRIS(PYRAZOL-1-YL)BORATO)YTTERBIUM(III), YB(HBPZ3)3 M. V. R. STAINER, M. V. R. STAINERSearch for more papers by this authorJ. TAKATS, J. TAKATSSearch for more papers by this author M. V. R. STAINER, M. V. R. STAINERSearch for more papers by this authorJ. TAKATS, J. TAKATSSearch for more papers by this author First published: January 25, 1983 https://doi.org/10.1002/chin.198304070Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume14, Issue4January 25, 1983 RelatedInformation

Coordination sphere geometry of tris(acetylacetonato)metal(II) complexes: the crystal and molecular structure of tris(1,1,1,5,5,5-hexafluoroacetylacetonato)iron(III)

The molecular structure of tris(1,1,1,5,5,5-hexafluoroacetylacetonato)iron(III) has been determined by single-crystal diffractometry. The compound crystallizes in the monoclinic space group P2 1/c with cell dimension of a = 9.054(7), b = 13.424(5), c = 21.591(16) Å and β = 116.71(2)° ( Z = D m = 1.90 g cm −3, D x = 1.917 g cm −3. A comparison of its coordination sphere geometry with that of tris(acetylacetonato)Fe(III) revealed no significant differences thus strongly suggesting that the coordination sphere geometry of tris(acac)metal(III) complexes is primarily determined by the electronic configuration of the metal ion. Significant bending distortions to the chelate rings and the trifluoromethyl groups are attributed to crystal packing forces.

Die Kristall- und Molekülstruktur von Tris(dimethylamino)boran / The Crystal and Molecular Structure of Tris(dimethylamino)borane

Abstract Tris(dimethylamino)borane, X-ray The crystal and molecular structure of tris(dimethylamino)borane, a liquid at room temperature, has been determined by single-crystal X-ray diffraction methods at - 116°C. The single-crystal growth was accomplished by means of a miniature zone melting process on the diffractometer. The structure data are compared with those of other aminoboranes.