String [Mn3] Units with Formate or Azide towards New Single-Chain Magnets

作     者：Hong-Bin Xu Bin-Wu Wang Feng Pan Zhe-Ming Wang Song Gao~* Beijing National Laboratory for Molecular Sciences,State Key Laboratory of Rare Earth Materials Chemistry and Applications,College of Chemistry and Molecular Engineering,Peking University,Beijing 100871,P.R.China 

会议名称：《The 9th China-Japan Joint Symposium on Conduction and Photoconduction in Organic Solids and Related Phenomena》

会议日期：2007年

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学] 

摘      要：Recently single-molecule magnet（SMM） and single-chain magnet（SCM） have been received great attention for their unique magnetic properties,such as slow relaxation and large hysteresis,providing the opportunity of potential application in information storage and quantum computation at molecular *** principle,SMM could be linked as building block by covalent bonds to control the dimension of the structure and magnitude of the inter-SMM magnetic interaction *** to now,a few SCMs have been created from trinuclear or tetranuclear SMM building blocks,and they have improved blocking temperature（T）and barrier than those of *** this work,a trinuclear compound [MnO（tBu-sao）Cl（CHOH）]·HO was used as a building unit,which displays a slow relaxation behavior below *** the Cl ion with formate or azide ion leads to the string of these [Mn]units along the easy axis of the magnetization,corresponding to the chain *** linked [Mn]units through formate or azide show SCM behavior with T and bigger barrier than [Mn]unit itself because of the enhancement of the uniaxial anisotropy.