ELECTROCHEMICAL SYNTHESES OF PYRIMIDINE-2-THIOLATO COMPLEXES OF NICKEL(II) - CRYSTAL AND MOLECULAR-STRUCTURE OF 2,2'-BIPYRIDINE-BIS(PYRIMIDINE-2-THIOLATO)NICKEL(II) MONOHYDRATE

被引:36
作者
CASTRO, R
DURAN, ML
GARCIAVAZQUEZ, JA
ROMERO, J
SOUSA, A
CASTINEIRAS, A
HILLER, W
STRAHLE, J
机构
[1] UNIV SANTIAGO DE COMPOSTELA,DEPT QUIM INORGAN,CAMPUS UNIV,SANTIAGO,SPAIN
[2] UNIV TUBINGEN,INST ANORGAN CHEM,W-7400 TUBINGEN 1,GERMANY
来源
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES | 1990年 / 45卷 / 12期
关键词
CRYSTAL STRUCTURE; NICKEL(II) COMPLEXES; PYRIMIDINE-2-THIONE; ELECTROCHEMICAL SYNTHESES;
D O I
10.1515/znb-1990-1206
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The electrochemical oxidation of nickel in pyrimidine-2-thione (pymt H) solution yields a compound of formula [Ni(pymt)2]. When pyridine (py), 2,2'-bipyridine (bipy) or 1,10-phenanthroline (phen) are added to the solution phase, the product obtained is a complex [Ni(pymt)2py2] or [Ni(pymt)2L] (L = bipy or phen). The crystal structure of [Ni(pymt)2bipy] . H2O is monoclinic, space group P2l/c, with a = 726.6(2), b = 1586.2(2), c = 1696.7(4) pm, beta = 99.04(4)-degrees and Z = 4. The nickel atom has highly distored octahedral coordination and the pyrimidine-2-thiolato ligand is bidentate, forming two four-membered chelate rings with a small ''bite'' angle of ca. 68-degrees. The two sulphur atoms are in a trans arrangement. The vibrational and electronic spectra of the compounds are discussed.
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页码:1632 / 1636
页数:5
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