Synthesis and physico-chemical studies of complexes of Co(II), Ni(II), Cu(II) and Hg(II) with some azole based biheterocyclic ligands

Citation
S. Jena et al., Synthesis and physico-chemical studies of complexes of Co(II), Ni(II), Cu(II) and Hg(II) with some azole based biheterocyclic ligands, I J CHEM A, 38(4), 1999, pp. 350-354
Citations number
21
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Chemistry
Journal title
INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY
ISSN journal
0376-4710 → ACNP
Volume
38
Issue
4
Year of publication
1999
Pages
350 - 354
Database
ISI
SICI code
0376-4710(199904)38:4<350:SAPSOC>2.0.ZU;2-0
Abstract
The biheterocyclic ligands 1,1'-dimethylene-2, 2'-bisimidazole [BBIIM, L] a nd 2-(2'-pyridyl)indole [PyIn, L'] form complexes of the type [Co(L or L')( 2)X-2], [Ni(L or L')X-2], [Cu(L or L')X-2] and [Hg(L or L')X-2], X=Cl, NCS. The complexes have been characterised on the basis of elemental analyses, conductivity measurement, magnetic susceptibility measurement [Gouy and VSM (vibrating sample magnetometer) method] and IR-FTIR, electronic, NMR (H-1 and C-13) and EPR spectral studies. The H-1 and C-13 NMR signals of the fre e ligands undergo downfield shifts on complexation. The IR-FTIR spectral da ta reveal the unidentate nature of NCS group, which coordinates to the meta l through nitrogen. The high resolution CID mass spectrum of L and EIMS of L' reveal the molecular mass of the ligands and their fragmentation pattern also.