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Crystal Structure and Magnetic Behaviour of the New Gadolinium Complex Compound Gd2(ClH2CCOO)6(bipy)2

✍ Scribed by Daniela John; Werner Urland

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
161 KB
Volume
2005
Category
Article
ISSN
1434-1948

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✦ Synopsis

Abstract

Single crystals of the title compound have been obtained by reaction of Gd~3~(ClH~2~CCOO)~9~(H~2~O)~5~ with 2,2′‐bipyridyl (bipy) in a solution of ethanol and water. Gd~2~(ClH~2~CCOO)~6~(bipy)~2~ crystallises in the triclinic space group P$\bar {1}$ (Z = 2) with a = 959.5(3) pm, b = 980.9(3) pm, c = 1163.9(4) pm, α = 68.67(3) °, β = 84.82(4)° and γ = 82.47(4)°. The crystal structure is built up of discrete molecules of dinuclear Gd^3+^–Gd^3+^ units. The corresponding residual (all data) for the refined structure is 4.46 %. The magnetic behaviour of the compound was investigated in the temperature range of 1.76–300 K. The magnetic data were interpreted considering exchange interactions within the dimeric unit (J~ex~ = –0.020 cm^–1^). (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)

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## Abstract Detailed ^1^H and ^13^C{^1^H} NMR analysis has been carried out on complexes with the general formulae [Pt(bipy)(__n__‐Rpy)~2~](PF~6~)~2~ and [Pt(4‐Phbipy)(__n__‐Rpy)~2~](PF~6~)~2~ [bipy = 2,2′‐bipyridyl; 4‐Phbipy = 4,4′‐diphenyl‐2,2′‐dipyridyl; __n__‐Rpy = pyridine or substituted pyrid