title: A two-dimensional honeycomb coordination network based on fused triacontanuclear heterometallic {Co12Mn18} wheels.
abstract: An unprecedented two-dimensional honeycomb network based on fused triacontanuclear heterometallic wheels of 3.4 nm, {[Co2(Mn3O)(N3)2(pic)6(NO3)](-)}6 (Hpic = picolinic acid), has been assembled. The hexagonal {Co12Mn18} wheel motif is composed of six oxo-centered {Mn3} trinuclear and six {Co2} dinuclear moieties acting as nodes and linkers, respectively. The paramagnetic properties of this compound observed down to 1.8 K result from the competition of Mn···Mn, Mn···Co and Co···Co interactions in combination with spin-orbit coupling and single-ion behavior of the Co(II) centers.
authors.affiliation: School of chemistry & Material Science, Shanxi Normal University, Linfen, 041004, P. R. China. zhangxm@dns.sxnu.edu.cn.
authors.forename: Jiang
authors.initials: J
authors.lastname: Liu
authors.forename: Mei
authors.initials: M
authors.lastname: Qu
authors.forename: Rodolphe
authors.initials: R
authors.lastname: Clérac
authors.forename: Xian Ming
authors.initials: XM
authors.lastname: Zhang