Crystal and Molecular Structures of Ru3(CO)12-n(PMe3)n n = 1, 2)

Abstract

The crystal and molecular structures of the title compounds are described. Both contain a triangular Ru3 core [average Ru-Ru 2·85₃ (n = 1), 2·83₇ Å (n = 2)], with the PMe₃ ligands occupying equatorial positions. For n = 2, substantial twisting about the Ru-Ru bonds results in one CO group adopting a semibridging position across the Ru-Ru vector joining a substituted Ru with the Ru(CO)₄ fragment. Comparisons are also made with the previously determined n = 3 complex.