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Magnetic Anisotropy of New Layered Copper( II ) Bromide Complexes of 1‐Substituted Tetrazoles
Author(s) -
Shvedenkov Yurii,
Bushuev Mark,
Romanenko Galina,
Lavrenova Ludmila,
Ikorskii Vladimir,
Gaponik Pavel,
Larionov Stanislav
Publication year - 2005
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200400505
Subject(s) - chemistry , monoclinic crystal system , copper , isostructural , crystallography , magnetic anisotropy , magnetization , ferromagnetism , anisotropy , curie temperature , crystal structure , bromide , magnetic susceptibility , bromine , condensed matter physics , inorganic chemistry , organic chemistry , magnetic field , physics , quantum mechanics
Abstract Two new isostructural complexes, dibromobis(1‐ethyltetrazole)copper( II ) ( 1 ) and dibromobis(1‐hexyltetrazole)copper( II ) ( 2 ), have been synthesised. Each bromine atom in the crystal structure of 1 and 2 is bonded to two copper atoms to give rise to a polymeric corrugated network. The polymeric layers are distinctly separated by tetrazole ligands. Both solids exhibit a phase transition to the ferromagnetic state with Curie temperatures of 8.5 K and 8.9 K for 1 and 2 , respectively, and a strong anisotropy of the magnetic susceptibility below the ordering temperature. The easy magnetisation axis lies along the monoclinic axis, and the hard magnetisation axis is orthogonal to the polymeric layers. Effective anisotropy fields were estimated as (720–3020 Oe). (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)