title: A new Fe(6) ferric cluster: synthesis, crystal structure and magnetic properties.
abstract: A new Fe(III)(6) cluster, [Fe(3)L(2)(ida)(mu-OH)(3)(mu-O)](2).4ClO(4).2CH(3)OH.8H(2)O (1) (where L = N-methyl-N,N-bis(2-pyridylmethyl)amine; H(2)ida = iminodiacetic acid), has been synthesized and magnetic properties are shown. The asymmetric unit of 1 contains a triangular [Fe(3)L(2)(ida)(mu-OH)(3)(mu-O)](2+) unit and two such trinuclear units are further connected by two ida(2-), generating a hexanuclear Fe(III) core in 1. Variable temperature magnetic susceptibility studies reveal the presence of dominant antiferromagnetic exchange interactions and the variable-field and temperature magnetization measurements establish that each Fe(3) cluster has S = 5/2 ground state and the coupling between the two moieties is almost zero.
authors.affiliation: Department of Chemistry, Nankai University, Tianjin, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Qian
authors.forename: Jinlei
authors.initials: J
authors.lastname: Tian
authors.forename: Wen
authors.initials: W
authors.lastname: Gu
authors.forename: Song
authors.initials: S
authors.lastname: Gao
authors.forename: Liu
authors.initials: L
authors.lastname: Xin
authors.forename: Shiping
authors.initials: S
authors.lastname: Yan
authors.forename: Joan
authors.initials: J
authors.lastname: Ribas
authors.forename: Daizheng
authors.initials: D
authors.lastname: Liao
authors.forename: Peng
authors.initials: P
authors.lastname: Cheng
mesh_terms: D018360:Crystallography, X-Ray; D005290:Ferric Compounds / Q000737:chemistry*; D008024:Ligands; D008280:Magnetics; D008744:Methylamines / Q000737:chemistry; D011725:Pyridines / Q000737:chemistry
chemical_list: D005290:Ferric Compounds; D008024:Ligands; D008744:Methylamines; D011725:Pyridines; C121054:bis(2-pyridyl)methylamine