Metal-Rich Metallaboranes: Synthesis, Structures and Bonding of Bi- and Trimetallic Open-Faced Cobaltaboranes by Kriti Pathak, Chandan Nandi, Jean-François Halet, Sundargopal Ghosh

“…Although cluster <b>1</b> adopts a <i>classical</i> 11-vertex-<i>nido</i>-geometry with one cobalt center and four boron atoms forming the open pentagonal face, it disobeys the Polyhedral Skeletal Electron Pair Theory (PSEPT). Compound <b>2</b> adopts a perfectly symmetrical 10-vertex-<i>nido</i> framework with a plane of symmetry bisecting the basal boron plane resulting in two {CoB₃} units bridged at the base by two boron atoms and possesses the expected electron count. …”
Get full text

Theoretical studies on cluster compounds by Lin, Z

“…The <em>Polyhedral Skeletal Electron Pair Theory (PSEPT)</em>, which correlates the structures and electron counts (total number of valence electrons) of main group and transition metal ligated clusters, is briefly described.…”