Crystal growth, properties, and structure refinements of some rhenium phosphides and arsenophosphides

Small single crystals of Re2P and Re3P4 were grown in a tin flux. Their crystal structures were refined from single crystal diffractometer data to residuals of R = 0.055 and R = 0.049, respectively. The new compound ReP2.3 was prepared. Re6P13 forms an extended solid solution with As up to Re6As10.7P2.3. Re3P4 is diamagnetic. ReP4 is a diamagnetic semiconductor with a band gap of 0.54 eV. Systematic trends in the structural chemistry of rhenium phosphides are discussed.