Preparation and characterization of some ternary complexes of copper(II) with o-phenanthroline and oxygen donor ligands

1978 ◽  
Vol 31 (2) ◽  
pp. 459 ◽  
Author(s):  
WL Kwik ◽  
KP Ang

A series of eight ternary complexes, viz. [Cu(phen)(acac)] Cl and Cu(phen)L(H2O)n(phen = o-phenanthroline; L = a bidentate oxygen donor ligand; n = 0, 1 or 2), have been prepared and characterized by microanalysis, infrared spectral and electronic spectral measurements. The results indicate that the Cu(phen)2+ species has a great affinity for oxygen donor ligands resulting in chelate rings of varying sizes. Infrared spectral data indicate that the Cu-O bond weakens as the oxygen donor chelate ring increases in size; the Cu-N bond appears to be less sensitive to ring size. Tentative assignments for the electronic absorption bands have also been made.

1973 ◽  
Vol 26 (8) ◽  
pp. 1645 ◽  
Author(s):  
EM Krankovits ◽  
RJ Magee ◽  
MJ O'Conner

The preparation of a number of polymeric, octahedral bis(N- alkylmonothiocarbamato)nickel(II) complexes and some of their base adducts is described. ��� The preparation and characterization of some bis(phosphine)bis(N- alkylmono-thiocarbamato)palladium(II) compounds are also described for the first time. The butyl compound is monomeric in chloroform and infrared spectral measurements of all compounds indicate that the monothiocarbamate ligands are bonded to palladium through the sulphur atoms only. The proton magnetic resonance spectrum of the dimethylphenylphosphine complex shows clearly that the phosphine groups are trans in the complexes. ��� Simple bis(monothiocarbamato)-palladium(II) or -platinum(II) have not been isolated but pyrrolidinium tetra(N- pyrrolidylmonothiocarbamato)-palladium(II) or -platinum(II) compounds are formed. Infrared measurements indicate that the mono-thiocarbamate ligands are bonded to the metal through both oxygen and sulphur atoms but no definite structure can be proposed for these compounds at present.


2008 ◽  
Vol 361 (5) ◽  
pp. 1485-1495 ◽  
Author(s):  
Manjuri K. Koley ◽  
Seshadri C. Sivasubramanian ◽  
Babu Varghese ◽  
Periakaruppan T. Manoharan ◽  
Aditya P. Koley

Author(s):  
Sandeep Kumar ◽  
Ruchi Khajuria ◽  
Amanpreet Kaur Jassal ◽  
Geeta Hundal ◽  
Maninder S. Hundal ◽  
...  

Donor-stabilized addition complexes of nickel(II) with disubstituted diphenyldithiophosphates, [{(ArO)2PS2}2NiL2] {Ar = 2,4-(CH3)2C6H3[(1), (5)], 2,5-(CH3)2C6H3[(2), (6)], 3,4-(CH3)2C6H3[(3), (7)] and 3,5-(CH3)2C6H3[(4), (8)];L= C5H5N [(1)–(4)] and C7H9N [(5)–(8)]}, were successfully isolated and characterized by elemental analysis, magnetic moment, IR spectroscopy and single-crystal X-ray analysis. Compound (4) crystallizes in the monoclinic space groupP21/nwhereas compounds (7) and (8) crystallize in the triclinic space group P\bar 1. The single-crystal X-ray diffraction analysis of (4), (7) and (8) reveals a six-coordinated octahedral geometry for the NiS4N2chromophore. Two diphenyldithiophosphate ions act as bidentate ligands with their S atoms coordinated to the Ni centre. Each of them forms a four-membered chelate ring in the equatorial plane. The N atoms from two donor ligands are axially coordinated to the Ni atom.


Polyhedron ◽  
2012 ◽  
Vol 42 (1) ◽  
pp. 207-215 ◽  
Author(s):  
Francisco D. Fagundes ◽  
Juliana P. da Silva ◽  
Clebson L. Veber ◽  
Andersson Barison ◽  
Carlos B. Pinheiro ◽  
...  

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