Nickel(II) complexes of imidazole-derived ligands with an amide group: Some compounds with complex magnetic behaviour

• Type: Article in International Scientific Journal
• Date: 2002

Authors

Basto, MCRMP (Author) FCUP; Silva, GVA (Author) Other; Machado, AASC (Author) Other

Journal

Title: Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry

Vol. 32

Pages: 305-327

ISSN: 0094-5714

Publisher: Marcel Dekker Inc.

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 0 Citations

Scientific classification

FOS: Natural sciences > Chemical sciences

Other information

Authenticus ID: P-000-QHR

DOI: 10.1081/sim-120003210

Abstract (EN): NiL4X2.xH(2)O compounds [L = 1-(2-carbamoylethyl)-4-methylimidazole C4MIm), 1-(2-carbamoylethyl)benzimidazole (CBIm) or 1-(2-carbamoylethyl)-5,6-dimethylbenzimidazole (CMMBIm)] have been prepared and characterised and the effect of different axial ligands, X, on the magnetic properties of the complexes has been examined. Diamagnetic and paramagnetic complexes with CMMBIm have been obtained. With C4MIm and CBIm, only paramagnetic compounds could be isolated. The CBIm ligand afforded complexes with unusual magnetic behaviour: NiCl2(CBIm)(4) is believed to exhibit a spin-singlet ground state with a low-lying spin triplet state and NiBr2(CBIm)(4) shows magnetic properties indicating structural changes over the temperature range studied. Structures of the compounds have been proposed based on spectroscopic and magnetic data and on powder X-ray diffraction patterns.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 23