Crystal structure of a zigzag CoIIcoordination polymer:catena-poly[[dichloridobis(methanol-κO)cobalt(II)]-μ-bis(pyridin-3-ylmethyl)sulfane-κ2N:N′]

Abstract

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 CoIIcation lies on a crystallographic inversion centre and the S atom of theLligand lies on a twofold rotation axis. Each CoIIion is coordinated by two pyridine N atoms from two bridgingLligands, two O atoms from methanol molecules and two chloride anions, all inversion-related. The complex unit has an elongated octahedral geometry, in which N2O2donor atoms occupy the equatorial positions and two chloride anions occupy the axial positions. EachLligand links two CoIIions, forming an infinite zigzag chain propagating along thec-axis direction and further stabilized by O—H...Cl hydrogen bonds between the methanol molecules and the chloride anions. Adjacent chains in the structure are connected by intermolecular C—H...Cl hydrogen bonds, resulting in the formation of a three-dimensional supramolecular architecture.