title: A new cube-based dodecanuclear cobalt(ii) cluster with azide and tetrazolate ligands exhibiting ferromagnetic ordering.
abstract: A new cubane-based Co(ii) compound, [Co(12)(5-PT)(6)(CO(3))(N(3))2(O)(4)(CH(3)O)(6)(H(2)O)(18)] (1) (5-HPT = 5-phenyl-1H-tetrazole), was synthesized by reaction of 5-HPT, CoCl(2)·6H(2)O and NaN(3) in a methanol solution. In 1, a Co(12) cluster based on three identical Co(4)O(2)(ON)(2) cubane units bridged by a μ(6)-carbonate ligand is linked by π-π stacking interactions between phenylene groups, forming a 3D supramolecular structure. Magnetic investigations indicate that compound 1 exhibits long-range ferromagnetic ordering at about 9 K. The cube-based Co(12) clusters with μ(6)-CO(3)(2-) bridges are unprecedented.
authors.affiliation: College of Chemistry and Materials Science, Huaibei Normal University, Anhui 235000, China. zhangxiumeilb@126.com.
authors.forename: Xiu-Mei
authors.initials: XM
authors.lastname: Zhang
authors.forename: Peng
authors.initials: P
authors.lastname: Li
authors.forename: Wei
authors.initials: W
authors.lastname: Gao
authors.forename: Jie-Ping
authors.initials: JP
authors.lastname: Liu
authors.forename: En-Qing
authors.initials: EQ
authors.lastname: Gao