Protonic complexes of oxo ligands with tetrachloroauric acid

1970 ◽  
Vol 9 (5) ◽  
pp. 1284-1286 ◽  
Author(s):  
Richard A. Potts
Keyword(s):  
2013 ◽  
Vol 69 (2) ◽  
pp. m91-m91 ◽  
Author(s):  
Shahrbano Foladi ◽  
Parivash Khazaei ◽  
Jafar Attar Gharamaleki ◽  
Behrouz Notash ◽  
Mohammad Kazem Rofouei

In the centrosymmetric tetranuclear title molecule, [Sn4(C6H5)8Cl2O2(OH)2]·2C2H6OS, the two independent tinIVatoms show distorted trigonal–bipyramidal SnC2O3and SnC2O2Cl coordination geometries. The four tinIVatoms are bridged by the hydroxo and oxo ligands, forming a ladder-like array of three edge-connected Sn2O2squares. The solvent molecules are linked to the tetranuclear moleculeviaO–H...O hydrogen bonds.


1987 ◽  
Vol 42 (12) ◽  
pp. 1520-1526 ◽  
Author(s):  
Max Herberhold ◽  
Walter Kremnitz ◽  
Markus Kuhnlein ◽  
Manfred L. Ziegler ◽  
Karl Brunn

AbstractA simple and high-yield preparation of the pentamethylcyclopentadienyl vanadium(IV) trihalides Cp*VX3 (X = CL, Br, I) from Cp*V(CO)4 as well as their conversion into the oxo-vanadium(V) compounds Cp*VOX2 (X = CL, Br) and [Cp*VOX]2(μ-O) (X = CL, Br, I) are described. The equilibrium between the two fluoride species Cp*VOF2 and [Cp*VOF]2(μ-O) has also been investigated. The complexes are characterized by their NMR (51V, l3C, 1H), IR, and mass spectra. The crystal structure of the binuclear chloro-oxo complex [Cp*VOCl]2(μ-O) has been determined by X-ray diffraction. The molecules contain two [Cp*VOCl] units combined via a bent oxo bridge (V-O-V angle of 142.2(2)°). The vanadium-oxygen bond lengths are 157.6(8) and 179.4(1) pm for the terminal and the bridging oxo ligands, respectively, corresponding to double and single bonds.


2020 ◽  
Vol 21 (4) ◽  
pp. 1494 ◽  
Author(s):  
Oleg V. Mikhailov ◽  
Denis V. Chachkov

The quantum-chemical calculation of iron, cobalt and nickel heteroligand complexes with the double deprotonated form of (NNNN)-donor atomic ligand—3,7,11,15-tetraazaporphine—and two oxo ligands has been carried out. Data on the structural and standard thermodynamic parameters, NBO analysis and multiplicity of the ground states of these complexes have been presented. The given calculation has been made by using the density functional theory (DFT) method with the OPBE/TZVP basis set. Based on the results of this calculation, the possibility of the existence of oxidation state VI for the chemical elements indicated above—unusual for iron and cobalt, and for nickel, unknown at all—has been shown.


2011 ◽  
Vol 123 (2) ◽  
pp. 107-112 ◽  
Author(s):  
VIMAL K JAIN ◽  
AMEY WADAWALE ◽  
NISHA P KUSHWAH ◽  
MANOJ K PAL
Keyword(s):  

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