Coordination Chemistry of New Sulfur Containing Ligands -- 21. Selected Transition Element Complexes of Pyrrole-n-carbothioate: A New Type of Monothiocarbamate Ligand
Journal of Inorganic and Nuclear Chemistry
Two new monothiocarbamate ligands have been prepared and their coordination chemistry has been investigated. Potassium pyrrole-N-carbothioate, prepared from potassium pyrrolate and COS, is a white, air sensitive solid which reacts with NiBr2 and PdBr2 to yield 2:1 ligand to metal compounds. The Ni compound has been characterized by IR spectroscopic studies as well as a detailed magnetic study. Results show that the Ni(II) compound is a dimer with one paramagnetic and one diamagnetic Ni center. The magnetic moment is 2.53 ± 0.05 B.M. per Ni atom in the range 9.7–66.6 K. The Pd compound of the pyrrole-N-carbothioate ligand is apparently monomeric and four-coordinate. This is the first example of a simple bis-bidentate monothiocarbamate complex of Pd(II). The structure and bonding in these new compounds is discussed in terms of the resonance structures of the ligands. Potassium indoline-N-carbothioate reacts with CuBr2 to yield the disulfide, bis(indolinecarbomoyl)disulfide and copper(I).
Bereman, Robert D.; Baird, Donald M.; and Hatfield, William E., "Coordination Chemistry of New Sulfur Containing Ligands -- 21. Selected Transition Element Complexes of Pyrrole-n-carbothioate: A New Type of Monothiocarbamate Ligand" (1981). Chemistry and Physics Faculty Articles. 28.