Acyclische Liganden mit fixierter Koordinationsgeometrie, 1:2-Komplexe von Cobalt(II) mit den Anionen von 2.2′-Dihydroxydiphenyloxid und -sulfid -Kristall-und Molekülstruktur von Natrium-bis[diphenylsulfid-2.2′ -diolato(2-)]cobaltat(II>- Aceton-Wasser (1/2/1) / Acyclic Ligands with Fixed Coordination Geometry, I 1:2 Complexes of Cobalt(II) with the Anions of 2,2′-Dihyydroxydiphenyloxide and -sulfide - Crystal and Molecular Structure of Sodium bis[diphenylsulfide-2,2′-diolato(2-)]cobaltate(II)- Acetone-Water (1/2/1)

1982 ◽  
Vol 37 (3) ◽  
pp. 341-347 ◽  
Author(s):  
Hartmut Müller ◽  
Arno Holzmann ◽  
Winfried Hinrichs ◽  
Günter Klar
Keyword(s):  
Molecular Structure ◽  
Crystal And Molecular Structure ◽  
Coordination Geometry ◽  
Normal Range ◽  
X Ray ◽  
Chelating Ligand ◽  
Acetone Water ◽  
Acyclic Ligands

The synthesis of bis[diphenylchalcogenide-2,2′-diolate(2-)]-cobaltate(II) compounds is described. In these complexes diphenyloxide-2,2′-diolate acts as a bidentate, diphenylsulfide- 2,2′-diolate as a tridentate chelating ligand leading to tetrahedral or octahedral coordinated cobalt(II), resp. An X-ray analysis of sodium bis[diphenylsulfide-2,2′-diolate(2-)]cobaltate(II)-acetonewater (1/2/1) shows the ligands to occupy fac-, their sulfur atoms cis-positions. The Co-0 distances (average 204.5 pm) are in the normal range while the C-S distances (average 248.5 pm) are longer than usually found indicating weaker bonds to sulfur than to oxygen.

Synthesis and Crystal and Molecular Structure of trans-Dichloro(ethanedial dioximato(1—)-N,N')(ethanedial dioxime-N,N')rhodium(III)

1989 ◽  
Vol 44 (1) ◽  
pp. 5-8
Author(s):  
Michel Mégnamisi-Bélombé
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Room Temperature ◽  
Crystal And Molecular Structure ◽  
Crystallographic Direction ◽  
Monoclinic Space Group ◽  
Coordination Geometry ◽  
X Ray Diffraction ◽  
X Ray ◽  
Cl Atoms

Abstract trans-Dichloro(ethanedial-dioximato)(ethanediaI-dioxime)rhodium (III), RhCl2(GH)(GH2), has been synthesized and its structure determined by single crystal X-ray diffraction at room temperature. C4H7Cl2N4O4Rh, Mr = 348.94. monoclinic space group P21/ɑ; a = 10.543(3), b = 8.363(2), c = 11.512(3)Å ; β = 92.79(2)°; V = 1024Å3; Z = 4; Dc = 2.26 Mg m-3. Final Rw = 0.075 for 2035 reflections and 139 parameters. The coordination geometry around Rh is a dis­torted (4+2) octahedron, with four chelating N atoms lying in the equatorial plane and the two Cl atoms in the apical positions. The H atoms of the oxime groups are involved in relatively weak intramolecular O-H-O bridgings, as well as in very strong intermolecular bridgings which extend throughout the crystal structure and propagate nearly parallel to the [101] crystallographic direction.

Phenylimido complexes of tungsten(VI) and tungsten(V). The crystal and molecular structure of Trichloro(phenylimido)bis(trimethylphosphine)tungsten(V)

1983 ◽  
Vol 36 (2) ◽  
pp. 243 ◽  
Author(s):  
AJ Nielson ◽  
JM Waters
Keyword(s):  
Molecular Structure ◽  
Crystal And Molecular Structure ◽  
Multiple Bond ◽  
Coordination Geometry ◽  
Fourier Methods ◽  
X Ray ◽  
Distorted Octahedral Coordination ◽  
Distorted Octahedral Coordination Geometry ◽  
Distorted Octahedral ◽  
Tetrahydrofuran Solution

Tetrachloro(phenylimido)tungsten(VI) is reduced by trimethylphosphine in tetrahydrofuran solution to give the tungsten(V) complex PhNWCl3(Pme3)2 in which the phenylimido multiple bond remains intact. The complex reacts with oxygen to form the phosphine oxide complex PhNWCl3 (OPMe3)2. Pyridine and alkyl cyanides do not reduce tetrachloro(phenylimido)tungsten(V1) but give the adducts PhNWCl4.L (L = py, MeCN, EtCN). The crystal and molecular structure of the title complex has been determined from single-crystal X-ray diffractometer data. The crystals are monoclinic with a 14.903, b 10.221, c 14.380Š β 116.05�, space group P21/c, Z 4. The structure has been solved by Patterson and Fourier methods and refined to R 0.030 for the 1566 observed data. Distorted octahedral coordination geometry is found with two trans trimethylphosphine and two trans chloride ligands; a third chloride is trans to the phenylimido group. The W-N(imido) bond length is 1.731 �.

The crystal and molecular structure of cis-dichloro(2,2′-o-phenylenebisbenzothiazole)copper(II)

1979 ◽  
Vol 57 (11) ◽  
pp. 1368-1371 ◽  
Author(s):  
Richard G. Ball ◽  
James Trotter
Keyword(s):  
Molecular Structure ◽  
Crystal And Molecular Structure ◽  
Coordination Geometry ◽  
Full Matrix ◽  
X Ray ◽  
Square Planar ◽  
The Mean ◽  
Final Agreement ◽  
Cl Atoms ◽  
Least Squares Techniques

The molecular structure of cis-dichloro(2,2′-o-phenylenebisbenzothiazole)copper(II) has been determined by single crystal X-ray diffractometry. The crystal is monoclinic, P21/n, a = 8.408(1), b = 15.819(1), c = 14.229(2) Å, β = 93.19(1)°, and Z = 4. The structure has been refined by full-matrix least-squares techniques on F, using 3316 unique reflections for which F2 > 3σ(F2), to a final agreement factor of 0.028. The complex adopts an approximately square planar coordination geometry with the Cu bound to two cis Cl atoms and the N atoms of the chelating benzothiazole ligand. The mean Cu—N and Cu—Cl distances are 2.016(6) and 2.217(6) Å, respectively.

Pseudo-Polymerization via Symmetric O -H -O Bonding of the Cobaloximatic Acid, Hydro-trans-Diiodobis(2,3-butanedione dioximato(1-)-N ,N′)cobaltate(III). X-Ray Crystal and Molecular Structure

1991 ◽  
Vol 46 (2) ◽  
pp. 165-168 ◽  
Author(s):  
Michel Mégnamisi-Bélombé ◽  
Robert Parfait Massongo Bokanjo ◽  
Bernhard Nuber
Keyword(s):  
Molecular Structure ◽  
Ambient Temperature ◽  
Single Crystal ◽  
Crystal And Molecular Structure ◽  
Monoclinic Space Group ◽  
Coordination Geometry ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
X Ray ◽  
Dimensional Network

The structure of hydro-trans-diiodobis(2,3-butanedione dioximato)cobaltate(III), H(CoI2(dmg)2) (dmg- = dimethylglyoximate) has been determined by single crystal X -ray diffraction at ambient temperature. The crystals are monoclinic, space group C 2/c, C8H15CoI2N4O4, Mr = 543.98; a = 15.714(6), b = 7.408(3), c = 13.944(5) Å; β = 107.76(3)°; V = 1545.85 Å3; Z = 4; Dc = 2.34 Mg m -3. The com pound is best visualized as a monobasic acid. The molecules are linked together into two-dimensional network, where linkage parallel to the ac plane is effected by weak intermolecular iodine interactions (I ···I = 3.826 Å), and linkage along the b axis by symmetric intermolecular O - H - O bridges (O - Ointermol = 2.499 Å) involving the acidic protons. Each molecule contains two equivalent intramolecular O - H - O bridges (O ··· Ointrarnol = 2.603 Å). The coordination geometry around Co is a distorted (4+2) octahedron of four chelating equatorial N atoms and two apical iodine atoms. The rectilinear I- Co- I triads are arranged in infinite, faintly zigzagged heteroatomic chains propagating parallel to the ac plane.

Crystal and Molecular Structure of [(η5-C5H4SiMe3)2LuCl]2: A Precursor for the Production of Lu2O3 Films

2004 ◽  
Vol 59 (9) ◽  
pp. 1035-1038 ◽  
Author(s):  
Herbert Schumanna ◽  
Igor L. Fedushkin ◽  
Markus Hummert ◽  
Giovanna Scarel ◽  
Emiliano Bonera ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Narrow Range ◽  
Crystal And Molecular Structure ◽  
Coordination Geometry ◽  
X Ray Diffraction ◽  
Centrosymmetric Dimer ◽  
Metal Centers ◽  
X Ray ◽  
Intermolecular Contacts

The single crystal X-ray diffraction study of [(η5-C5H4SiMe3)2LuCl]2, prepared from LuCl3 and Na[C5H4SiMe3], shows the compound to be a centrosymmetric dimer with two η5-bonded cyclopentadienyl rings and two symmetrically bridging chlorine atoms coordinated to each of the two metal centers. The coordination geometry around the lutetium atoms is that of a distorted pseudo tetrahedron. The Lu-C(Cp) distances lie within the narrow range of 2.571 - 2.608 Å . The Lu-Cl bond lengths are 2.639(1) and 2.653(1) Å . The crystal structure shows no significant intermolecular contacts.

Applications of molybdenum-95 N.M.R. spectroscopy. VI. 95Mo and 13C N.M.R. of certain cis-dioxomolybdenum(VI) compounds and related species. The crystal and molecular structure of Bis(N,N-diethylhydroxylamido(l -)-O,N)- disulfidomolybdenum(VI) hemibenzene

1982 ◽  
Vol 35 (11) ◽  
pp. 2183 ◽  
Author(s):  
SF Gheller ◽  
TW Hambley ◽  
PR Traill ◽  
RTC Brownlee ◽  
MJ O'Conner ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Related Species ◽  
Crystal And Molecular Structure ◽  
Coordination Geometry ◽  
Crystal Data ◽  
X Ray ◽  
X Ray Crystallography ◽  
Sulfide Ligands

The 95MO n.m.r. spectra of a series of compounds containing the fac-[MoVIO3] and cis-[ MoVIO2] units are reported, together with those for the series [MoX2(R2NO)2] (X = O or S; R = Et, PhCH2). Trends in the data are discussed. The stereochemistry in solution of certain of the cis-dioxo species is assigned by means of 13C n.m.r. spectroscopy. The crystal and molecular structure of [MoS2(Et2NO)2],0.5C6H6 has been determined by X-ray crystallography. The steric and electronic requirements of the terminal sulfide ligands significantly affect the detailed coordination geometry relative to that observed for the dioxo analogue [MoO2(Et2NO)2]. Crystal data: a 10.162(2), b 11.836(2), c 14.437(2) �, β 106.12(2)� P21/a; Z 4.

The crystal and molecular structure of tris(pentamethylenedithiocarbamate) chromium(III)-chloroform (1 : 2)

1981 ◽  
Vol 46 (1) ◽  
pp. 6-19 ◽  
Author(s):  
Viktor Kettman ◽  
Ján Garaj ◽  
Jaroslav Majer
Keyword(s):  
Molecular Structure ◽  
Structural Analysis ◽  
Crystal And Molecular Structure ◽  
Analysis Method ◽  
Complex Molecules ◽  
Coordination Polyhedra ◽  
X Ray ◽  
Cell Dimensions ◽  
Crustal Density ◽  
Unit Cell Dimensions

The crystal and molecular structure of [Cr(S2CN(CH2)5)3].2 CHCl3 was found by the X-ray structural analysis method. The value R 0.090 was found for 1 131 observed independent reflections. The substance crystallizes in a space group of symmetry P212121 with the following unit cell dimensions: a = 0.8675 (6), b = 1.815(2), c = 2.155(3) nm. The experimentally observed crustal density was 1.48 Mgm-3 and the value calculated for Z = 4 was 1.51 Mgm-3. The CrS6 coordination polyhedron has the shape of a trigonally distorted octahedron, where the D3 symmetry is a approximately retained. The degree of trigonal distortion expressed as the projection of the chelate S-Cr-S angle onto the plane perpendicular to the C3 pseudo axis is Φ = 41.7° (Φ = 60° for an octahedron). The skeleton of the structure formed by the complex molecules contains channels filled with chloroform molecules. The specific type of complex-chloroform interaction consists of the formation of hydrogen bonds of the chloroform protons with the fully occupied pπ-orbitals of the sulphur atoms in the coordination polyhedra. The low stability and crystal decomposition can be explained by loss of chloroform from the channels.

scholarly journals Structural Characterization of Heterodinuclear ZnII-LnIII Complexes (Ln = Pr, Nd) with a Ring-Contracted H2valdien-Derived Schiff Base Ligand

2021 ◽  
Author(s):  
Shabana Noor ◽  
Richard Goddard ◽  
Fehmeeda Khatoon ◽  
Sarvendra Kumar ◽  
Rüdiger W. Seidel
Keyword(s):  
Molecular Structure ◽  
Schiff Base ◽  
Structural Characterization ◽  
Schiff Base Ligand ◽  
Crystal And Molecular Structure ◽  
X Ray ◽  
X Ray Crystallography ◽  
Imidazoline Ring

AbstractSynthesis and structural characterization of two heterodinuclear ZnII-LnIII complexes with the formula [ZnLn(HL)(µ-OAc)(NO3)2(H2O)x(MeOH)1-x]NO3 · n H2O · n MeOH [Ln = Pr (1), Nd (2)] and the crystal and molecular structure of [ZnNd(HL)(µ-OAc)(NO3)2(H2O)] [ZnNd(HL)(OAc)(NO3)2(H2O)](NO3)2 · n H2O · n MeOH (3) are reported. The asymmetrical compartmental ligand (E)-2-(1-(2-((2-hydroxy-3-methoxybenzylidene)amino)-ethyl)imidazolidin-2-yl)-6-methoxyphenol (H2L) is formed from N1,N3-bis(3-methoxysalicylidene)diethylenetriamine (H2valdien) through intramolecular aminal formation, resulting in a peripheral imidazoline ring. The structures of 1–3 were revealed by X-ray crystallography. The smaller ZnII ion occupies the inner N2O2 compartment of the ligand, whereas the larger and more oxophilic LnIII ions are found in the outer O2O2’ site. Graphic Abstract Synthesis and structural characterization of two heterodinuclear ZnII-LnIII complexes (Ln = Pr, Nd) bearing an asymmetrical compartmental ligand formed in situ from N1,N3-bis(3-methoxysalicylidene)diethylenetriamine (H2valdien) through intramolecular aminal formation are reported.

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