Dinuclear complex of methionine S-oxide with platinum(II) involving imido-briging; X-ray crystal structure of di-µ[(2S,SS)-2-amino-4-methylsulphinylbutanoato(–2)-S,O-µ-n]diplatinum(II)

1977 ◽  
pp. 607-608 ◽  
Author(s):  
Wade A. Freeman
Keyword(s):  
Crystal Structure ◽  
Dinuclear Complex ◽  
X Ray

Diolefincobalt(0)-Komplexe / Diolefincobalt(0) Complexes

1984 ◽  
Vol 39 (5) ◽  
pp. 643-648 ◽  
Author(s):  
Hans-Friedrich Klein ◽  
Joachim Groß ◽  
Hubert Witty ◽  
Dietmar Neugebauer
Keyword(s):  
Crystal Structure ◽  
Structure Determination ◽  
Valence State ◽  
Cobalt Atom ◽  
Spectroscopic Properties ◽  
Dinuclear Complex ◽  
X Ray ◽  
Linear Dimer ◽  
Mononuclear Cobalt

Mononuclear cobalt(0) complexes containing diolefin and trimethylphosphane ligands Co(cycloocta-1,5-diene)(PMe3)2 and Co[(CH2=CHMe2Si)2O](PMe3)2 are obtained from CoCl2 by reaction with magnesium in the presence of the ligands or by substitution of cobalt(olefin)tris- (trimethylphosphane) with diolefin. Chemical and spectroscopic properties confirm the para- magnetic valence state of the compounds in solution. An X-Ray crystal structure determination of Co[(CH2=CHMe2Si)2O](PMe3)2 shows a tetrahedral arrangement of ligand functions around the cobalt atom. With butadiene a diamagnetic dinuclear complex [Co(C4H6)(PMe3)3]2 is obtained containing π-allyl co-ordination of two Co(PMe3)3 units to a linear dimer of butadiene

scholarly journals 4- and 5-Coordinate Dinuclear Copper(II) Complexes with the Tetraacetylethanediide and an N-Alkylated Diamine or a Triamine

1995 ◽  
Vol 50 (4) ◽  
pp. 536-544 ◽  
Author(s):  
Hide Kambayashi ◽  
Junko Yuzurihara ◽  
Yuichi Masuda ◽  
Hiroko Nakagawa ◽  
Wolfgang Linert ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Esr Spectra ◽  
Crystal Structure Analysis ◽  
Dinuclear Complex ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
Dinuclear Copper ◽  
X Ray ◽  
Final Agreement

Six dinuclear copper(II) complexes have been prepared, Cu2(taet)(plam)2X2 where taet = 1,1,2,2-tetraacetylethanediide, plam = N-alkylated polyamine such as tmen = N,N,N′,N′-tetramethylethylenediamine or pmdt = N,N,N′,N′,N′-pentamethyldiethylenetriamine, X = a monovalent anion such as ClO4- , NO3- or Cl-. These complexes are classified into two categories from the results of electronic spectra, IR spectra, and X-ray single crystal structure analysis as follows: (1) 4-coordinate-4-coordinate dinuclear, [Cu2(taet)(tmen)2]X2 (where X = ClO4- or NO3-), (2) 5-coordinate-5-coordinate dinuclear, [Cu2(taet)(tmen)2Cl2], and [Cu2(taet)(pmdt)2]X2 (where X = ClO4-, NO3- , or Cl- ). The crystal structure of Cu2(taet)(tmen)2(ClO4)2 · H2O (1) has been determined by the single crystal X-ray diffraction technique; monoclinic space group P21/a with a = 26.478(3), b = 8.744(1), c = 15.601(3) Å, β = 106.195(9)°, and V = 3468.9(8) Å3 for Z = 4. The final agreement factors are R = 0.097 ( Rw = 0.099). The geometry of each Cu(II) moiety in the dinuclear cation (1) is 4-coordinate square planar with a N2O2 donor set. This tmen-dinuclear complex exhibits a very weak C u (II)-Cu (II) interaction (J = -0.5 cm-1), and shows characteristic ESR spectra with seven hyperfine peaks in 1,2-dichloroethane solution at room temperature. This is not found for the corresponding pmdt-dinuclear complex. All complexes obtained in this study are very soluble in many organic solvents. The tmen-dinuclear complexes show pronounced solvatochromic behavior-dependent on the solvent donor properties. This is not found for the corresponding pmdt-dinuclears, which are stable as 5-coordinated species.

X-ray crystal structure, spectral and magnetic properties of a mixed-ligand dinuclear complex [Cu(Phen)(Sa)(ClO4)]2

Polyhedron ◽  
1995 ◽  
Vol 14 (5) ◽  
pp. 639-642 ◽  
Author(s):  
Ming Li ◽  
Jiang-Zhong Zou ◽  
Zheng Xu ◽  
Xiao-Zeng You ◽  
Xiao-Yin Huang
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Mixed Ligand ◽  
Dinuclear Complex ◽  
X Ray

Unexpected preparation and X-ray crystal structure of the dinuclear complex Mo2(μ-P(O)(OCH3)2)2(CO)4(P(OCH3)3)2(CF3COO)2

Polyhedron ◽  
1986 ◽  
Vol 5 (11) ◽  
pp. 1785-1789 ◽  
Author(s):  
Samir Arabi ◽  
Chantal Berthelot ◽  
Jean-Pierre Barry ◽  
Nicholas J. Taylor ◽  
Bruno Chaudret
Keyword(s):  
Crystal Structure ◽  
Dinuclear Complex ◽  
X Ray

Heteronukleare Komplexverbindungen mit Metall–Metall-Bindungen, V [1] / Heteronuclear Co-ordination Compounds with Metal–Metal-Bonds, V [1]

1991 ◽  
Vol 46 (4) ◽  
pp. 507-518 ◽  
Author(s):  
Ralf Fuchs ◽  
Peter Klüfers
Keyword(s):  
Crystal Structure ◽  
The Other ◽  
Dinuclear Complex ◽  
Carbonyl Complex ◽  
Tetrahedral Geometry ◽  
X Ray ◽  
X Ray Crystallography ◽  
Metal Metal ◽  
Cobalt Compounds ◽  
Metal Bonds

The heteronuclear carbonyl complex [(NH3)2CuCo(CO)4] 1 reacts with the phosphane ligands PPh3, PEt3 and P(OMe)3. A dinuclear complex, [(PPh3),CuCo(CO)4] 2, is formed with PPh3, while trinuclear anionic [Cu{Co(CO)4}2]- species are formed with the other phosphane ligands. The crystal structure of 2 (Cu—Co = 255.2(2) pm) and the structures of two compounds with trinuclear anions, [Cu{P(OMe)3}4][Cu{Co(CO)4}2] 3 (Cu—Co = 232.64(8) and 233.10(8) pm) and PPN[Cu{Co(CO)4}2] 6 (Cu—Co = 238.1(1) and 234.3(1) pm), have been determined by X-ray crystallography. The angle Cax—Co—Ceq of tetracarbonyl cobalt compounds (i. e. the deviation from tetrahedral geometry) depends on the charge of the Co(CO)4 fragment, as calculated with the electronegativity equalization scheme of Bratsch (J. Chem. Ed. 61, 588 (1984)).

Synthesis and crystal structure of a homoleptic diruthenium complex containing tetra-2-pyridyl-1,4-pyrazine (tppz)

2017 ◽  
Vol 72 (10) ◽  
pp. 759-762 ◽  
Author(s):  
Marion Graf ◽  
Peter Mayer ◽  
Hans-Christian Böttcher
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Title Complex ◽  
Dinuclear Complex ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
X Ray Crystallography ◽  
Diruthenium Complex

AbstractTreatment of hydrated ruthenium(III) chloride with tetra-2-pyridyl-1,4-pyrazine (tppz) in refluxing ethoxyethanol afforded the homoleptic dinuclear complex [(tppz)Ru(μ-tppz)Ru(tppz)]4+ (1) besides small amounts of the species [Ru(tppz)2]2+. The title complex 1 was obtained as purple crystals and characterized as its hexafluoridophosphate salt by NMR spectroscopy, mass spectrometry and microanalyses. The molecular structure of 1(PF6)4 has been established by X-ray crystallography.

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