Abstract
Reaction of bis-(pyridin-3-ylmeth-yl)sulfane (L) with cobalt(II) chloride in methanol led to the formation of the title coordination polymer, [CoCl2(C12H12N2S)(CH3OH)2] n , in which the CoII cation lies on a crystallographic inversion centre and the S atom of the L ligand lies on a twofold rotation axis. Each CoII ion is coordinated by two pyridine N atoms from two bridging L ligands, two O atoms from methanol mol-ecules and two chloride anions, all inversion-related. The complex unit has an elongated octa-hedral geometry, in which N2O2 donor atoms occupy the equatorial positions and two chloride anions occupy the axial positions. Each L ligand links two CoII ions, forming an infinite zigzag chain propagating along the c-axis direction and further stabilized by O-H⋯Cl hydrogen bonds between the methanol mol-ecules and the chloride anions. Adjacent chains in the structure are connected by inter-molecular C-H⋯Cl hydrogen bonds, resulting in the formation of a three-dimensional supra-molecular architecture.
Highlights
Reaction of bis(pyridin-3-ylmethyl)sulfane (L) with cobalt(II) chloride in methanol led to the formation of the title coordination polymer
[CoCl2(C12H12N2S)(CH3OH)2]n, in which the CoII cation lies on a crystallographic inversion centre and the S atom of the L ligand lies on a twofold rotation axis
Each CoII ion is coordinated by two pyridine N atoms from two bridging L ligands, two O atoms from methanol molecules and two chloride anions, all inversion-related
Summary
Large numbers of metal–organic coordination polymers with intriguing topologies and attractive properties have been constructed in which dipyridyl-type molecules functioning as bridging ligands have mainly been used Our group has investigated several metal–organic coordination polymers with interesting topologies using such dipyridyl-type ligands (Moon et al, 2011, 2016, 2017; Lee et al, 2015; Ju et al., 2014; Im et al, 2017). In an extension of our research in this area, the title compound was prepared by the reaction of cobalt(II) chloride with bis(pyridin-3-ylmethyl)sulfane, C12H12N2S, (L) as a flexible dipyridyl-type ligand [synthesized according to a literature procedure (Park et al, 2010; Lee et al., 2012)]. Our group has previously reported the crystal structure of a looped-chain CoII coordination polymer obtained through the reaction of cobalt(II) nitrate with L (Moon et al, 2017).
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