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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on KAu(Br2O)2 by Materials Project

KAu(OBr2)2 crystallizes in the monoclinic P2_1/c space group. The structure is one-dimensional and consists of two KAu(OBr2)2 ribbons oriented in the (1, 0, 1) direction. K1+ is bonded in a linear geometry to two equivalent O2- atoms. Both K–O bond lengths are 2.61 Å. Au1+ is bonded in a square co-planar geometry to four Br+0.50+ atoms. There are two shorter (2.47 Å) and two longer (2.60 Å) Au–Br bond lengths. O2- is bonded in a distorted bent 120 degrees geometry to one K1+ and one Br+0.50+ atom. The O–Br bond length is 1.74 Å. There are two inequivalent Br+0.50+ sites. In the first Br+0.50+ site, Br+0.50+ is bonded in a single-bond geometry to one Au1+ atom. In the second Br+0.50+ site, Br+0.50+ is bonded in a bent 120 degrees geometry to one Au1+ and one O2- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KAu(Br2O)2 by Materials Project

KAu(OBr2)2 crystallizes in the monoclinic P2_1/c space group. The structure is two-dimensional and consists of two KAu(OBr2)2 sheets oriented in the (0, 1, 0) direction. K1+ is bonded in a distorted square co-planar geometry to four equivalent O2- atoms. There are two shorter (2.72 Å) and two longer (2.88 Å) K–O bond lengths. Au1+ is bonded in a square co-planar geometry to four Br+0.50+ atoms. There are two shorter (2.46 Å) and two longer (2.59 Å) Au–Br bond lengths. O2- is bonded in a trigonal non-coplanar geometry to two equivalent K1+ and one Br+0.50+ atom. The O–Br bond length is 1.74 Å. There are two inequivalent Br+0.50+ sites. In the first Br+0.50+ site, Br+0.50+ is bonded in a single-bond geometry to one Au1+ atom. In the second Br+0.50+ site, Br+0.50+ is bonded in a distorted water-like geometry to one Au1+ and one O2- atom.

36 MATERIALS SCIENCE↗