Linking cyano-bridged ladders by azide to form a layered metamagnet

Yuan-Zhu Zhang,a  Song Gao,*a  Hao-Ling Sun,a  Gang Su,b  Zhe-Ming Wanga  and  Shi-Wei Zhanga 

State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, P. R. China 
E-mail: gaosong@pku.edu.cn
Fax: +86-10-62751708

 Department of Physics, The Graduate School of the Chinese Academy of Sciences, P. O. Box 3908, P. R. China

Received (in Cambridge, UK) 7th April 2004, Accepted 3rd June 2004

First published as an Advance Article on the web 8th July 2004

Abstract

    Cyano-bridged corrugated ladder-like chains are connected by μ1,1–N3 (end-on, EO) bridges to form a layered coordination polymer, {Mn(N3)(CH3OH)[Cr(phen)(CN)4]}·CH3OH (2), which is the first mixed cyano–azide bridged compound, and shows metamagnetism below 21.8 K, a temperature much higher than that (3.4 K) of the crossed double chain [Cr(phen)(CN)4]2 [Mn(H2O)2]·4H2O (1) based on the same building block [Cr(phen)(CN)4]−.