Abstract
A new polymeric betaine complex of manganese(II), of stoichiometry [Mn(C5H5NCH2COO)2 (H2O)2]C12, has been prepared and characterized by infrared spectroscopy and X-ray crystallography. The complex exhibits strong carboxylate absorptions at 1624, 1396, 1384, and 715 cm−1. The crystal structure has been refined toR F =0.057 for 2342 observed (∥F 0∥>6σ∥F 0∥) MoKα data. The complex consists of a packing ofsyn-anti carboxylate-bridged, one-dimensional polymeric chains running parallel to thea axis. Each Mn(II) atom is located at an inversion center, with aqua ligands occupying the trans positions in a slightly distorted octahedron. The chloride ions and aqua ligands are alternately linked by O-H⋯Cl hydrogen bonds into a (Cl−·H2O)∞ zigzag chain also running parallel to thea axis.
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Chen, X.M., Mak, T.C.W. Metal-betaine interactions. I. Crystal structure of polymeric trans-diaquabis(pyridine betaine)manganese(II) dichloride. Journal of Crystallographic and Spectroscopic Research 21, 21–25 (1991). https://doi.org/10.1007/BF01158969
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DOI: https://doi.org/10.1007/BF01158969