title: Chiral mononuclear lanthanide complexes and the field-induced single-ion magnet behaviour of a Dy analogue.
abstract: Three pairs of homochiral mononuclear lanthanide complexes, with the general formula [LnH4LRRRRRR/SSSSSS(SCN)2](SCN)2·xCH3OH·yH2O(Ln = Dy (R/S-Dy1), Ho (R/S-Ho1) and Er (R/S-Er1)), have been obtained via self-assembly between chiral macrocyclic ligands and the respective thiocyanates, all of which show a saddle-type conformation with seven-coordinated metal ions. Magnetic measurements revealed that the Dy complex shows field-induced single-ion magnet behaviour, which is rarely reported in a seven-coordinated lanthanide-based SIM encapsulated in a macrocyclic ligand. The absolute configuration of all enantiomers was determined by single crystal X-ray crystallography and confirmed by electronic CD and VCD spectra.
authors.affiliation: State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China. tang@ciac.ac.cn.
authors.forename: Shuang-Yan
authors.initials: SY
authors.lastname: Lin
authors.forename: Chao
authors.initials: C
authors.lastname: Wang
authors.forename: Lang
authors.initials: L
authors.lastname: Zhao
authors.forename: Jianfeng
authors.initials: J
authors.lastname: Wu
authors.forename: Jinkui
authors.initials: J
authors.lastname: Tang