DOE OSTI2020
NSe2O6 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is one-dimensional and consists of four NSe2O6 ribbons oriented in the (1, 0, 0) direction. N is bonded in a water-like geometry to two O atoms. There is one shorter (1.13 Å) and one longer (1.85 Å) N–O bond length. There are two inequivalent Se sites. In the first Se site, Se is bonded in a 4-coordinate geometry to four O atoms. There are a spread of Se–O bond distances ranging from 1.66–2.40 Å. In the second Se site, Se is bonded in a trigonal non-coplanar geometry to three O atoms. There are a spread of Se–O bond distances ranging from 1.64–1.96 Å. There are six inequivalent O sites. In the first O site, O is bonded in a distorted bent 120 degrees geometry to two Se atoms. In the second O site, O is bonded in a single-bond geometry to one N atom. In the third O site, O is bonded in a single-bond geometry to one Se atom. In the fourth O site, O is bonded in a distorted bent 150 degrees geometry to one N and one Se atom. In the fifth O site, O is bonded in a single-bond geometry to one Se atom. In the sixth O site, O is bonded in a bent 120 degrees geometry to two Se atoms.