pH-Directed assembly and magnetic properties of two polynuclear MnII complexes: (Δ, Λ)-{Mn3(phen)2(OOCCH3)6} and 1-D [Mn(phen)Cl2]n
作者:Xiao-Ming Lu、Pei-Zhou Li、Xiu-Teng Wang、Song Gao、Xiao-Jun Wang、Lei Zhou、Chen-Shu Liu、Xi-Na Sui、Jun-He Feng、Yu-Heng Deng、Qiong-Hua Jin、Jing Liu、Na Liu、Jing-Ping Lian
DOI:10.1016/j.poly.2008.08.027
日期:2008.12
When the reaction conditions are deliberately controlled by the pH, two different polynuclear manganese complexes, (A, A)-[Mn-3(phen)(2) (CH3COO)(6)) (1) and [Mn(phen)Cl-2], (2) (phen = 1,10-phenanthroline), have been synthesized from the same raw materials. The structural analyses show that I has a structure formed by neutral chiral linear trinuclear molecules, while 2 has a structure consisting of one-dimensional infinite chains. A study of the temperature dependent magnetic susceptibilities reveal that I is an antiferromagnetically coupled trimer molecule while 2 shows ferromagnetic interactions within the chain. (C) 2008 Elsevier Ltd. All rights reserved.