Group 6 metal carbonyl complexes of 3'H-spiro[indole-3,2^131benzothiazole-2(lH)‎]-one

Abstract EN

The spiro-compound 3'H-spiro [indole-3, 2'-[l, 3] benzothiazole-2 (lH)-one (IBTH2) was synthesized and its structure was determined using spectroscopic techniques (FTIR, 'H NMR and mass) and X-ray crystallography.

This ligand possesses different centers for coordination.

Reactions of [M (CO) 6], M = Cr, Mo or W with IBTH2 in THF under reduced pressure were studied.

For chromium a complex with molecular formula [Cr (ITP)2] was isolated; where ITP is the opened form of the ligand which occurred through Cspiro-S bond, while [Mo (CO) 5 (IBTH2)] and [W(CO)5(IBTH2)] were isolated from the reaction of IBTH2 with molybdenum and tungsten car-bonyls, respectively.

All complexes were characterized by elemental analysis, IR, mass and 'H NMR spectroscopy.

The biological activity of the ligand and its complexes were studied and compared with the parent compound isatin.