SYNTHESIS AND CHARACTERIZATION OF [NIL2(OCOCF3)(2)] [L=1-(2-AMINOETHYL) PIPERIDINE] - THERMOCHROMISM AND X-RAY SINGLE-CRYSTAL STRUCTURE-ANALYSIS

Authors
DAS D NAYAK NP MUKHERJEE AK CHAUDHURI NR
Citation
D. Das et al., SYNTHESIS AND CHARACTERIZATION OF [NIL2(OCOCF3)(2)] [L=1-(2-AMINOETHYL) PIPERIDINE] - THERMOCHROMISM AND X-RAY SINGLE-CRYSTAL STRUCTURE-ANALYSIS, Polyhedron, 16(19), 1997, pp. 3305-3309
Citations number
20
Categorie Soggetti
Chemistry Inorganic & Nuclear",Crystallography
Journal title
Polyhedron → ACNP
ISSN journal
02775387
Volume
16
Issue
19
Year of publication
1997
Pages
3305 - 3309
Database
ISI
SICI code
0277-5387(1997)16:19<3305:SACO[[>2.0.ZU;2-M
Abstract
The complex [NiL2(OCOCF3)(2)] (1) [L = 1-(2-aminoethyl) piperidine] ha s been synthesized. Single crystal X-ray structure analysis of 1 revea ls a trans-octahedral geometry having an N4O2 chromophore. 1 upon heat ing undergoes an irreversible endothermic phase transition (194-215 de grees C; Delta H = 11.2 kJ mol(-1)) accompanied by a blue to reddish p ink colour change retaining its trans-configuration. The thermochromis m is proposed to be due to a decrease of in-plane ligand field strengt h resulting from conformational changes of the diamine chelate rings. (C) 1997 Elsevier Science Ltd.