Synthesis and characterization of a tricobalt cluster with μ3 tert-butylcarbyne and PSe ligands

Abstract

µ3-Phosphido cluster 2, which is readily accessible from the cobalt chelate 1 by treatment with tert-butylphosphaethyne, reacts with red selenium to give the moderately air- and light-sensitive tetraselenide 4 with µ3tert-butylcarbyn and µ3 PSe ligands in 48% yield. The crystal structure of 4 is reported and compared to those of closely related clusters.