Abstract
A new Co(II)-based coordination polymer, [{Co3(ina)7.5(μ3–O)}{Co3(ina)2.5(μ3–OH)(μ–OH)(C2H5OH)(H2O)2}3]NO3·3C2H5OH·24H2O (1, also denoted as MCF-39), has been synthesized from the solvothermal reaction of cobalt(II) nitrate and the ligand isonicotinic acid (Hina) with the presence of hmq (2-(hydroxymethyl)-quinolin-8-ol) as a necessary additive. The crystal structure of 1 consists of the 7- and 9-connected trinuclear clusters, and exhibits the first highly-connected binodal network with (34·49·56·62)3(36·415·515) topology. Magnetic studies show that the spin canting and spin-glass-like behaviours were found in 1, and the cooperative effect among intra- and inter-trimer could greatly influence the bulk magnetic behaviour of the three-dimensional (3D) framework.
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