Premium
Synthesis and magnetic properties of copper (II)‐manganese (II) compounds with N,N ′‐ethylenedisalicylamidatocuprate(II)
Author(s) -
DaiZheng Liao,
SiWei Zhang,
ZhiYong Zhang
Publication year - 1989
Publication title -
acta chimica sinica english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 0256-7660
DOI - 10.1002/cjoc.19890070109
Subject(s) - chemistry , manganese , antiferromagnetism , magnetic susceptibility , copper , octahedron , crystallography , metal , ion , exchange interaction , inorganic chemistry , metal ions in aqueous solution , condensed matter physics , crystal structure , ferromagnetism , physics , organic chemistry
By the reaction of sodium N,N ′‐ethylenedisalicylamidatocuprate ( I ) pentahydrate, Na 2 [Cu(samen)]·5H 2 O, with a manganese ( I ) salt and 2,2′‐dipyridyl (bpy) or 1,10‐phenanthroline (phen), the binuclear metal complexes [Cu(samen) Mn(L) 2 ] (L bpy, phen) have been synthesized. Based on IR, elemental analyses and electronic spectra, the complexes are proposed to consist of a four‐coordinated Cu( I ) in a distorted planar environment and Mn( I ) in a distorted octahedron. The complexes have been characterized with variable‐temperature magnetic susceptibility (4.2—300 K) and the susceptibility data were least‐squares fit to susceptibility equation derived from the spin Hamiltonian including single‐ion zero‐field interaction for Mn 2+ ion, H —2 J S 1 ·S 2 — D S 2 Z1 , where D is the axial zero‐field splitting parameter for the Mn(II) ion. The exchange integral, J , was found to be —34.6 and —28.8 cm −1 for [Cu(samen)Mn(bpy) 2 ] and [Cu(samen)Mn(phen) 2 ] respectively. The weak antiferromagnetic spin‐exchange interaction can be interpreted by considering σ‐π exchange pathway.