Direct electrochemical synthesis of pyridine-2-thionato complexes of nickel( II ): the crystal structure of (2,2′-bipyridine)bis(pyridine-2-thionato)nickel( II )-2,2′-bipyridine(2/1)
1990; Royal Society of Chemistry; Issue: 2 Linguagem: Inglês
10.1039/dt9900000531
ISSN2050-5671
AutoresRosa Castro, M.L. Durán, J.A. García-Vázquez, Jaime Romero, Antonio Sousa, A. Castiñeiras, Wolfgang Hiller, Joachim Strähle,
Tópico(s)Magnetism in coordination complexes
ResumoThe compound [Ni(pyt)2] has been prepared in good yield by electrochemical oxidation of the metal in a solution of pyridine-2-thione (Hpyt) in acetonitrile. When pyridine (py), 2,2′-bipyridine (bipy), or 1,10-phenanthroline (phen) is present in the electrochemical cell the corresponding adducts [Ni(pyt)2(py)2], [Ni(pyt)2(bipy)], or [Ni(pyt)2(phen)] is obtained. The crystal structure of [Ni(pyt)2(bipy)]·0.5 bipy is monoclinic, with a= 10.409(2), b= 12.013(3), c= 19.790(3)Å, β= 103.95(3)°, space group P21/c, and R= 0.032 for 3 176 reflections with |Io| > 3σ|Io|. The molecule has a distorted octahedral NiN4S2 kernel, with average bond distances of 2.065 Å for Ni–N and 2.485 Å for Ni–S. The vibrational and electronic spectra of the compounds are discussed.
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