BIHETEROCYCLIC LIGANDS, TRANSITION-METAL COMPLEXES OF 2-(1-PYRIDINE-2-THIONATO)BENZOXAZOLE AND 2-(1-PYRIDINE-2-THIONATO)BENZOTHIAZOLE SYNTHESIS AND CHARACTERIZATION
Khan Ta",shahjahan, BIHETEROCYCLIC LIGANDS, TRANSITION-METAL COMPLEXES OF 2-(1-PYRIDINE-2-THIONATO)BENZOXAZOLE AND 2-(1-PYRIDINE-2-THIONATO)BENZOTHIAZOLE SYNTHESIS AND CHARACTERIZATION, Synthesis and reactivity in inorganic and metal-organic chemistry, 28(4), 1998, pp. 571-586
Several transition metal chelates with 2-(1-pyridine-2-thionato)benzox
azole (PTBOX) and 2-(1-pyridine-2-thionato)benzothiazole (PTBTH) have
been prepared and characterized. The ligands behave as a bidentate don
ors coordinating through the nitrogen atom of the benzoxazole or benzo
thiazole group and through the sulphur atom of the pyridine-2-thione m
oiety. The ligand field spectra and the magnetic moment values suggest
an octahedral geometry for the bivalent metal complexes. The Au(III)
complex is proposed to have a trigonal bipyramidal stereochemistry. A
chlorine-bridged dimeric structure has been suggested for the trivalen
t metal complexes.