Premium
Synthesis and magnetic properties of μ‐phenolato copper (II) binuclear complexes with different exogenous bridges
Author(s) -
Cheng Peng Yan,
Liao ShiPing,
Bai DaiZheng,
Jiang LingJim,
Wang ZongHui
Publication year - 1994
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.19940120404
Subject(s) - chemistry , copper , magnetic susceptibility , crystallography , antiferromagnetism , ion , bridging ligand , ligand (biochemistry) , stereochemistry , crystal structure , condensed matter physics , organic chemistry , receptor , physics , biochemistry
The syntheses and magnetic properties are reported for a series of copper(II) complexes prepared from a pentadentate binucleating ligand 2,6‐diformyl‐4‐methylphenol di(benzoylhydrazone) (H 3 L). These complexes incorporate different exogenous ions (X − ) into a bridging position to form copper(II) binuclear complexes of the formula [Cu 2 (H 2 L)X] 2+ , where X − = Br − (1), Cl − (2), HO − (3), C 2 H 5 O − (4) and C 3 H 3 N − 2 (5). The complexes have been characterized with variable temperature magnetic susceptibility (4.2–300 K) and the observed data were fit to those from a modified Bleaney‐Bowen equation by least‐squares method, giving the exchange integral 2 J = ‐6.2 cm −1 for 1, ‐76.4 cm −1 for 2, ‐241.9 cm −1 for 3, ‐231.1 cm −1 for 4 and ‐343.8 cm −1 for 5. This suggested that there is an antiferromagnetic interaction between the Cu(II) ions and the sequence of the effect of some exogenous bridging Uganda on magnetic coupling is corresponding to that in spectrochemical series.