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Electrochemical Synthesis and Characterization of Cobalt(II), Cobalt(III), and Nickel(II) Complexes with Pyrimidine‐2‐thionato Ligands
Author(s) -
Rodríguez A.,
GarcíaVázquez José Arturo,
Romero J.,
SousaPedrares A.,
Sousa A.,
Castro J.
Publication year - 2007
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200600387
Subject(s) - cobalt , chemistry , nickel , acetonitrile , electrochemistry , adduct , molecule , molybdenum , crystallography , metal , inorganic chemistry , organic chemistry , electrode
The electrochemical oxidation of anodic metal (cobalt and nickel) in acetonitrile solutions of the appropriate pyrimidine‐2‐thione derivatives (RpymSH, where R = 4‐CF 3 , 4,6‐CF 3 Me, 4,6‐MePh, 4,6‐CF 3 Ph, 4,6‐Ph 2 ) afforded complexes of composition [M(RpymS) 2 ], M = Co, Ni or [Co(RpymS) 3 ]. When 2,2′‐bipyridine (bipy) or 1,10‐phenanthroline (phen) was added to the electrolytic cell, adducts of cobalt(II) and nickel(II) compounds with these coligands were obtained: [M(RpymS) 2 bipy] and [M(RpymS) 2 phen]. All of the compounds were characterized by microanalysis, electronic, vibrational spectroscopy and FAB mass spectrometry, and, in the cases of the compounds [Co(RpymS) 3 ], by 1 H and 13 C, NMR spectroscopy. The compound [Co(4‐CF 3 pymS) 3 ] was also characterized by X‐ray diffraction. The crystal structure consists of monomeric molecules in which the central CoS 3 N 3 unit has a slightly distorted octahedral coordination with the ligands adopting a meridional disposition.