The chemistry of pyridine thiols and related ligands, Part 5. Synthesis and spectroscopy of nickel(II) and copper(II) complexes containing 1-oxopyridine-2-thione and 2,2′-bipyridine or 1,10-phenanthroline

✍ Scribed by Tarlok S. Lobana; Seema Paul

• Publisher: Springer
• Year: 1996
• Tongue: English
• Weight: 418 KB
• Volume: 21
• Category: Article
• ISSN: 0340-4285
• DOI: 10.1007/bf00139022

✦ Synopsis

Reactions of bis(1-oxopyridine-2-thione)

Ni II or CH ll with 2,2'-bipyridine (bipy) or 1,10-phenanthroline (phen) yield complexes of stoichiometry: Ni(CsH4NOS)2L {L = bipy, two isomers: (1) and (2), L = phen, one isomer (3)} and Cu(CsH4NOS)2(phen).0.75CHC13 (4). The spectroscopy (i.r., u.v.-vis., e.s.r.) and magnetism studies of the above complexes are described. On the basis of conductivity, the CulI-phen complex has been formulated as [Cu(CsH4NOS)(phen)2 ] [Cu(CsH4NOS)a ] 9 1.5CHC13 (4). The vis. absorption spectra support similar octahedral structures for the minor bipy isomer (2) and for the NilI-phen complex [(3)], whereas the major isomer [(I)] has a different structure. The e.s.r, spectrum of the cun-phen complex (4) is commensurate with an elongated octahedral structure~ New methods for the preparation and spectroscopy of M(CsH4NOS)2 (M--Mn, Ni, Cu or Zn) compounds have been investigated.