SYNTHETIC AND STRUCTURAL STUDIES ON ORGANOTRANSITION-METAL INDIUM THIOCYANATE COMPLEXES

The reaction between In(NCS)(3) and two equivalents of Na[Mo(CO)(3)(eta-C5H5)] afforded the indium thiocyanate complex [In(NCS){Mo(CO)(3)(eta-C5H5)}(2)] (2). The complexes [In(NCS){Fe(CO)(2)(eta-C5H5)}(2)] (3) and [In(NCS){W(CO)(3)(eta-C5H5)}(2)] (4) were prepared similarly. The reaction between 2 and OPPh(3) afforded the complex [In(NCS)(OPPh(3)){Mo(CO)(3)(eta-C5H5)}(2)] (5) and that between 3 and 4-picoline afforded [In(NCS)(4-picoline){Fe(CO)(2)(eta-C5H5)}(2)] (6) both of which were characterized by X-ray crystallography. In 5 and 6, the indium centres are four-coordinate with a distorted tetrahedral coordination geometry and the thiocyanate groups are bonded through the nitrogen atom. The reaction between 2 and [K(18-crown-6)][SCN] affords the ionic complex [K(18-crown-6)][In(NCS)(2){Mo(CO)(3)(eta-C5H5)}(2)] (7) which has also been characterized by X-ray crystallography.