Manganese Azides Based on Co‐Ligands with a Flexible Tail: Diverse Structural and Magnetic Properties
作者:Shi‐Qiang Bai、En‐Qing Gao、Zheng He、Chen‐Jie Fang、Yan‐Feng Yue、Chun‐Hua Yan
DOI:10.1002/ejic.200500691
日期:2006.1
(EO) azido bridges, complex 2 consists of (6,3) net layers in which double EO azido-bridged dimers are interlinked by single end-to-end (EE) azido bridges, and complex 3 contains chains of MnII ions bridged by alternating double EO and double EE azido bridges. Magnetically, 1 is a metamagnet built of ferromagnetic chains, 2 exhibits weak ferromagnetism due to spin canting, and 3 shows alternate ferro-
三种叠氮桥配位聚合物,即 [Mn(L1)(N3)2]n (1)、[Mn(L2)(N3)2]n (2) 和 [Mn(L3)(N3)2]n (3) [L1 = N-(2-吡啶基亚甲基)甲胺,L2 = N-(2-吡啶基亚甲基)乙胺,L3 = N-(2-吡啶基亚甲基)辛胺],已用席夫碱共配体合成柔性尾部,并对其结构和磁性进行表征。复合物 1 由具有双端 (EO) 叠氮桥的一维均匀链组成,复合物 2 由 (6,3) 个网层组成,其中双 EO 叠氮桥二聚体通过单端对端互连(EE) 叠氮桥,复合物 3 包含由交替的双 EO 和双 EE 叠氮桥桥接的 MnII 离子链。在磁性上,1 是由铁磁链构成的超磁体,2 由于自旋倾斜而表现出弱铁磁性,图 3 显示了交替的铁磁性和反铁磁性链内相互作用。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany