Ce16Si15O6N32—An Oxonitridosilicate with Silicon Octahedrally Coordinated by Nitrogen

Abstract

A rarity in solid-state chemistry is octahedrally coordinated silicon. Ce16Si15O6N32 is the first nitridosilicate with this structural motif. Most oxosilicates containing octahedrally coordinated silicon are high-pressure phases. In contrast to that Ce16Si15O6N32 has been synthesized under ambient pressure. An SiN6 octahedron that is surrounded by two parallel rings formed from six Si(O,N)4 tetrahedra is depicted.