Vanadiumkomplexe mit dreizähnigen diaciden Liganden. Bis[2-(2′-hydroxyphenyl)-chinolin-8-olato]dimethoxo-dioxo-divanadium(V) -ein neuer Strukturtyp/Vanadium Complexes with Tridentate Diacidic Ligands. Bis[2-(2′-hydroxyphenyl)-8-quinolinolato)dimethoxo-dioxo-divanadium (V) - a New Structure Type

1997 ◽  
Vol 52 (6) ◽  
pp. 693-695 ◽  
Author(s):  
Heike Hefele ◽  
Erhard Uhlemann ◽  
Frank Weller
Keyword(s):  
Molecular Structure ◽  
Structure Analysis ◽  
Sulfate Solution ◽  
Structure Type ◽  
Vanadium Complexes ◽  
Crystal Data ◽  
Space Group ◽  
X Ray

A new binuclear vanadium( V) complex was synthesized by reaction of an aqueous oxovanadium(IV) sulfate solution with 2-(2′-hydroxyphenyl)-8-quinolinol dissolved in methanol. The molecular structure of the complex was determined by X-ray structure analysis. Crystal data: a = 10.004(3), b = 9.325(2), c = 15.089(3) Å; β = 91.95(2)°; space group P21/n, Z = 4.

Titan- und Vanadiumkomplexe mit 4-[1-(N′-Benzoylhydrazino)-l-phenylmethyliden]- 3-methyl-1-phenyl-pyrazol-5-on. Röntgenkristallstruktur von 4-[1-(N′-Benzoylhydrazino)-1-phenyl-methyliden]-3-methyl-1-phenyl- pyrazol-5-on / Titanium- and Vanadium Complexes of 4-[1-(N′-Benzoylhydrazino)-1-phenylmethylidene]-3-methyl-1-phenyl-pyrazol-5-one. Structure of 4-[1-(N′-Benzoylhydrazino)-1-phenyl-methylidene]-3-methyl-1-phenyl-pyrazol-5-one

1996 ◽  
Vol 51 (9) ◽  
pp. 1240-1244 ◽  
Author(s):  
Heide Kraudelt ◽  
Uwe Schilde ◽  
Heike Hefele ◽  
Eberhard Ludwig ◽  
Erhard Ludwig
Keyword(s):  
Molecular Structure ◽  
Nmr Spectroscopy ◽  
Mass Spectroscopy ◽  
Chemical Bonding ◽  
Vanadium Complexes ◽  
Crystal Data ◽  
Space Group ◽  
X Ray ◽  
Vanadium Ions ◽  
C Nmr

By reaction of 1-phenyl-3-methyl-4-benzoyl-pyrazol-5-one with benzoylhydrazine the tridentate diacidic ligand 4-[1-(N′-benzoylhydrazino)-1-phenyl-m ethylidene]-3-m ethyl-lphenyl-1-pyrazol-5-one (H2L) is formed which gives complexes ML2 with tetravalent titanium and vanadium ions. The ligand and its complexes were characterized by mass spectroscopy. The vanadium(IV) complex can be oxidised and reduced electrochemicallv. The chemical bonding in the titanium(IV) complex and in the ligand was studied by IR and 13C NMR spectroscopy.The molecular structure of 4-[1-(N′-benzoylhydrazino)-1-phenyl-methylidenel-3-m ethyl-lphenyl- pyrazol-5-one was determined by X-ray analysis. Crystal data: a = 9.159(3) Å, b = 11.014(4) Å, c = 11.136(5) Å, a = 90.11 (2)°, β = 101.84(3)°, γ = 113.01 (2)°; space group P1̄, Z = 2.

scholarly journals Molekül- und Kristallstruktur von 1.1-Dimethylsilylentitanocendichlorid, (CH3)2Si(C5H4)2TiCl2 / Molecular and Crystal Structure of l,r-Dimethylsilylene Titanocene Dichloride, (CH3)2Si(C5H4)2TiCl2

1981 ◽  
Vol 36 (10) ◽  
pp. 1208-1210 ◽  
Author(s):  
Hartmut Köpf ◽  
Joachim Pickardt
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Structure Determination ◽  
Titanocene Dichloride ◽  
Molecular And Crystal Structure ◽  
Monoclinic Space Group ◽  
Crystal Data ◽  
Space Group ◽  
X Ray ◽  
Structural Dimensions

Abstract The molecular structure of the bridged [1]-titanocenophane 1,1'-dimethylsilylene titanocene dichloride, (CH3)2Si(C5H4)2TiCl2, has been investigated by an X-ray structure determination. Crystal data: monoclinic, space group C2/c, Z = 4, a = 1332.9(3), 6 = 988.7(3), c = 1068.9(3) pm, β = 113.43(2)°. The results are compared with the structural dimensions of similar compounds: 1,1'-methylene titanocene dichloride, CH2(C5H4)TiCl2, with the unbridged titanocene dichloride, (C5H5)2TiCl2 and the ethylene-bridged compound (CH2)2(C5H4)2TiCl2

Die Röntgenstrukturanalyse von (CO)9Co3CΟΒΒr2Ν(C5)3. X-ray Structure Analysis of (CO)9Co3COBBr2N(C2H5)3

1976 ◽  
Vol 31 (3) ◽  
pp. 342-344 ◽  
Author(s):  
Volker Bätzel
Keyword(s):  
Least Squares ◽  
Structure Analysis ◽  
Reliability Index ◽  
Three Dimensional ◽  
Diagonal Matrix ◽  
Crystal Data ◽  
Block Diagonal Matrix ◽  
Fourier Methods ◽  
Space Group ◽  
X Ray

Using three dimensional X-ray data collected on a four circle diffractometer, the structure of (CO)9Co3COBBr2N(C2H5)3 was solved by Patterson and Fourier methods. Least squares refinement with a block-diagonal matrix leads to a reliability index of R = 10.7%. Crystal data: α = 13.277(6) Å, b = 10.17(1) Å, c = 9.22(2) Å; α = 91.12(6)°, β = 87.61(4)°, γ = 98.79(2)°; space group P1̅; Z = 2; V = 1229,7 Å3; Dx = 1.97 gcm-3.

Synthesis and molecular structure of tetraphenylarsonium Tetrakis(benzenethiolato)-oxorhenate(V)-Acetonitrile (1/1)

1983 ◽  
Vol 36 (2) ◽  
pp. 253 ◽  
Author(s):  
AC McDonell ◽  
TW Hambley ◽  
MR Snow ◽  
AG Wedd
Keyword(s):  
Molecular Structure ◽  
Crystal And Molecular Structure ◽  
Crystal Data ◽  
Rhenium Atom ◽  
Space Group ◽  
X Ray ◽  
X Ray Crystallography

The salts Ph4As [ReO(SPh)4].MeCN and Ph4As [ReO(SePh)4] have been synthesized and characterized. The crystal and molecular structure of the thiolate compound has been determined by X-ray crystallography which reveals a square-pyramidal arrangement of ligand atoms around the central rhenium atom of the [ReO(SPh)4]- anion. Crystal data: a 9.756(4), b 18.171(3), c 25.684(4) �, space group P212121, Z 4.

Titan(IV)-Fulvalenkomplexe. Darstellung und Struktur von [CpTiPh2l2(C10H8) / Titanium(IV) Fulvalene Complexes. Preparation and Structure of [CpTiPh2]2(C10H8)

1993 ◽  
Vol 48 (5) ◽  
pp. 603-607 ◽  
Author(s):  
Ulf Thewalt ◽  
Thomas Wöhrle
Keyword(s):  
Structure Analysis ◽  
Crystal Data ◽  
Orthorhombic Space Group ◽  
Space Group ◽  
X Ray

The green insoluble TiIV compound which is obtained by treating titanocene with HC1 reacts with PhLi to yield the fulvalene-bridged compound [CpTiPh2]2(C10Hg) 3(Ph). An X-ray structure analysis of 3(Ph) shows, that the Ti atoms are in a trans arrangement with respect to the fulvalene group. Crystal data for 3(Ph) are as follows: C44H38Ti2, orthorhombic, space group P212,1 21, with a = 11,385(2), b = 14,510(2), c = 19,489(4) Å, Z = 4. The crystals exhibit enantiomorphism.

Ba5Al2Ge7 und Ba7Al4Ge9: Zwei neue intermetallische Phasen mit ungewöhnlichen Al-Ge-Anionen / Ba5Al2Ge7 and Ba7Al4Ge9: Two New Intermetallic Phases with Unusual Al-Ge Anions

2007 ◽  
Vol 62 (8) ◽  
pp. 1059-1070 ◽  
Author(s):  
Marco Wendorff ◽  
Caroline Röhr
Keyword(s):  
Ternary System ◽  
Single Crystal ◽  
Structure Type ◽  
Intermetallic Phases ◽  
Crystal Data ◽  
Form Complex ◽  
Space Group ◽  
X Ray ◽  
Al Content ◽  
Binary Section

In the ternary system Ba-Al-Ge new intermetallic compounds which are lying on or close to the binary section BaAl2 -BaGe2 were synthesized from the elements and characterized on the basis of X-ray single crystal data. The Al-content x in the compounds BaAlxGe2−x forming the AlB2 structure type ranges from x = 1.4 [BaAl1.4Ge0.6 space group P6/mmm, a = 443.5(1), c = 512.4(1) pm, Z = 1, R1 = 0.0222] to the stoichiometric ordered compound BaAlGe [space group P6̅m2, a = 434.9(1), c = 513.6 pm, Z = 1, R1 = 0.0252]. In the two new Ge-rich barium intermetallics Ba5Al2Ge7 [space group C2/m, a = 859.8(4), b = 1031.5(4), c = 1847.8(6) pm, β = 103.23(3)°, Z = 4, R1 = 0.0553] and Ba7Al4Ge9 [space group Fmm2, a = 1032.7(5), b = 2559(2), c = 862.1(4) pm, Z = 4, R1 = 0.1197] complex Al/Ge polyanions are present, which consist of (1) Al/Ge-ribbons of condensed planar sixmembered rings comparable to the anions in Ba3Al2Ge2, and (2) [Ge/Al]5 clusters comparable to the anions in the tetrelides Ba3M5. The building units (1) and (2) are connected via Al-Ge bonds to form complex ribbons in the case of Ba5Al2Ge7 and sheets in the case of Ba7Al4Ge9. The electron count in the two compounds supports an interpretation of the structures according to the Zintl concept and the Wades rules. The small formal electron excess, caused by the incomplete transfer of charge from Ba towards the Al/Ge polyanions, decreases with the Ge content of the compound.

Silaheterocyclen: Molekülstruktur eines 3-Oxa-2,4,6,7-tetrasilabicyclo[3.1.1]heptans / Silaheterocycles: Molecular Structure of a 3-Oxa-2,4,6,7-tetrasilabicyclo[3.1.1]heptane

1989 ◽  
Vol 44 (7) ◽  
pp. 796-799 ◽  
Author(s):  
Gabriele Reber ◽  
Jürgen Riede ◽  
Nils Wiberg ◽  
Gerhard Wagner ◽  
Gerhard Müller
Keyword(s):  
Molecular Structure ◽  
Dihedral Angle ◽  
Structure Analysis ◽  
Membered Ring ◽  
Triclinic Space Group ◽  
Space Group ◽  
X Ray

According to an X-ray structure analysis 1,5-bis(di-tert-butylmethylsilyl)-2,2,4,4,6,6,7,7-octamethyl-3-oxa-2,4,6,7-tetrasilabicyclo[3.1.1]heptane (1) is a rigid bicyclic molecule consisting of a 1,3-disilacyclobutane ring whose 2,4 positions are bridged by a Me2Si—O—SiMe2 fragment. The four-membered ring is non-planar with a dihedral angle of 33.8° along the C—C axis. The intraring valence angles at carbon are significantly smaller than those at silicon leading to a transannular Si ··· Si distance of only 2.558(1) Å (triclinic, space group P 1̄ with a = 9.125(2), b = 12.668(2), c = 15.499(3) Å, α = 101.25(1), β = 87.87(1), γ = 96.88(1)°, V = 1744.4 Å3 R (wR) = 0.044 (0.051) for 316 refined parameters and 5156 observables).

Komplexbildung und Metallextraktion mit heterocyclischen β-Dicarbonylverbindungen im Vergleich. Struktur von 3-Phenyl-4-benzoyl-isoxazol-5-on / Complex Formation and Metal Extraction with Heterocyclic β-Dicarbonyl Compounds as Comparison. Structure of 3-Phenyl-4-benzoyl-5-isoxazolone

1995 ◽  
Vol 50 (1) ◽  
pp. 37-42 ◽  
Author(s):  
Erhard Uhlemann ◽  
Alwin Friedrich ◽  
Gerald Hinsche ◽  
Wulfhard Mickler ◽  
Uwe Schilde
Keyword(s):  
Molecular Structure ◽  
Solid State ◽  
Complex Formation ◽  
Stability Constants ◽  
Metal Extraction ◽  
Crystal Data ◽  
Dicarbonyl Compounds ◽  
Space Group ◽  
X Ray ◽  
Copper Compounds

Acid constants and stability constants of nickel and zinc chelates with 2-thenoyltrifluoroacetone, dibenzoylmethane, 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone and 3-phenyl-4-benzoyl-5-isoxazolone were compared. The extraction of copper was studied. Thermoanalytic measurements were made using the ligands and their copper compounds in the solid state. The molecular structure of 3-phenyl-4-benzoyl-5-isoxazolone was determined by X-ray analysis. Crystal data: a = 874,7(2), b = 1959,2(7), c = 897,38(7) pm; β = 101,030(7)°; space group P 121/c 1; Z = 4; R = 0,043; 1920 observed, unique reflexions.

Synthesis, Properties and Crystal Structure of Bis(tetra(n-butyl)ammonium) Bisnitrophthalocyaninatoruthenate(II)

1997 ◽  
Vol 01 (04) ◽  
pp. 379-384 ◽  
Author(s):  
SVEND SIEVERTSEN ◽  
MORTEN WEIDEMANN ◽  
HEINER HÜCKSTÄDT ◽  
HEINER HOMBORG
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Resonance Raman ◽  
Spectroscopic Properties ◽  
Trans Configuration ◽  
Crystal Data ◽  
Full Agreement ◽  
Space Group ◽  
X Ray ◽  
Synthesis Properties

Tetra(n-butyl)ammonium nitrite reacts with ‘dichlorophthalocyaninatoruthenium(III) acid’ to yield bis(tetra(n-butyl)ammonium) bisnitrophthalocyaninatoruthenate(II). It crystallizes monoclinic with crystal data: a = 15.114(4) Å, b = 22.34(3) Å, c = 18.206 (11) Å, β = 90.88(5)°; space group P1 21/n 1, Z = 4, and its X-ray crystal structure has been determined. Ru is located in the centre of the slightly distorted phthalocyaninate dianion, and is coordinated to two nitrite ions through their nitrogen (N) atoms in a staggered trans-configuration. The average Ru - N p ( Np pyrrolic N atoms) and Ru -N distance is 1.978(6) and 2.068(5) Å, respectively. The electrochemical and spectroscopic properties (IR, resonance Raman, UV/vis) of the compound are in full agreement with its molecular structure.

Crystal Structure of the New Ternary Antimonide Ho5GaSb3

2009 ◽  
Vol 64 (8) ◽  
pp. 909-914 ◽  
Author(s):  
Iryna Antonyshyn ◽  
Olga Zhak ◽  
Stepan Oryshchyn ◽  
Volodymyr Babizhetskyy ◽  
Constantin Hoch ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Structure Type ◽  
Crystal Data ◽  
Space Group ◽  
X Ray ◽  
Partially Ordered ◽  
Data Space ◽  
Ternary Derivative

The crystal structure of the new ternary antimonide Ho5GaSb3 has been determined from X-ray single-crystal data: space group Pnma, a = 7.9667(8), b = 15.128(2), c = 7.9616(8) Å , V = 959.5(3) Å3, Z = 4, RF = 0.059, Rw = 0.066 for 9020 reflections. The crystal structure of Ho5GaSb3 is a ternary derivative of the Sm5Ge4 structure type with partially ordered distribution of gallium and antimony atoms

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