Materials Data on Re2O7 by Materials Project

Abstract

Re2O7 crystallizes in the orthorhombic Cmcm space group. The structure is two-dimensional and consists of two Re2O7 sheets oriented in the (0, 1, 0) direction. Re7+ is bonded to six O2- atoms to form corner-sharing ReO6 octahedra. The corner-sharing octahedra tilt angles range from 13–25°. There are a spread of Re–O bond distances ranging from 1.74–1.97 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one Re7+ atom. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to two equivalent Re7+ atoms. In the third O2- site, O2- is bonded in a linear geometry to two equivalent Re7+ atoms. In the fourth O2- site, O2- is bonded in a bent 150 degrees geometry to two equivalent Re7+ atoms.