An eleven-vertex metallaborane with tetracapped pentagonal bipyramidal geometry

A metallaborane of novel structure, [(Cp*Mo) 2B 3H 3Se 2{Fe(CO) 2} 2{Fe(CO) 3} 2] (2; Cp* = η 5-C 5Me 5), with tetracapped pentagonal bipyramidal geometry, isolated from the reaction of [(Cp*Mo) 2B 4H 4Se 2], 1 with [Fe 2(CO) 9]; the title compound exhibit an 11-vertex closo-cage geometry, having eight skeletal electron pairs (sep) and 98 valence electrons, appropriate for its geometric structure. © The Royal Society of Chemistry 2012.