Synthesis and Crystal and Molecular Structure of catena-Bis[μ-(N-methylpiperidinium-4-thiolato)]-cadmium(II) Perchlorate Dihydrate

The reaction of cadmium perchlorate hexahydrate with N-methyl-4-mercaptopiperidine in aqueous methanol gives na-bis[μ-(N-methylpiperidinium-4-thiolato)]-cadmium(II) perchlorate dihydrate. Crystallization occurs in the tetragonal space group 14 in a unit cell of dimensions a = 18.78 (2) Å and c = 6.66 (1) Å. Solution of the structure by direct methods led to a final weighted R factor of 0.055 for 796 independent reflections. The crystal structure consists of infinite chains of cadmium atoms, each of them tetrahedrally coordinated to four sulfur atoms of four different N-methylpiperidinium-4-thiolato groups. Each sulfur atom acts as a bridge between two consecutive cadmium atoms. The four cadmium-sulfur bond distances average 2.548 (9) Å. The coordination geometry around the chlorine atom of each perchlorate anion is that of a distorted tetrahedron due to hydrogen bonding with a water molecule. The compound represents the first polymeric cadmium complex of Y-mercaptoamine ligands reported. © 1979, American Chemical Society. All rights reserved.