Keywords: Cyclic-phosphinoborane-tetramer-resonance-4-colour.png Structure bonding and resonance forms of the octaphenylcyclotetraphosphinoborane molecule Ph<sub>2</sub>P-BH<sub>2</sub><sub>4</sub> Octaphenylcyclotetraphosphinoborane CAS 89695-42-1 is the cyclic tetramer of diphenylphosphinoborane Ph<sub>2</sub>P-BH<sub>2</sub> Single-crystal X-ray diffraction data from http //dx doi org/10 1021/ja000732r J Am Chem Soc 2000 122 6669-6678 Interactive Jmol 3D model available at http //www benjamin-mills com/chemistry/structures/phosphinoborane/ Own 2009-04-10 Ben Mills Benjah-bmm27 Images by Ben Mills Octaphenylcyclotetraphosphinoborane Tetramers |