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3 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Zr(NF3)2 by Materials Project

ZrF4(NF)2 crystallizes in the orthorhombic Pca2_1 space group. The structure is one-dimensional and consists of sixteen monofluoroamine molecules and four ZrF4 ribbons oriented in the (1, 0, 0) direction. In each ZrF4 ribbon, there are two inequivalent Zr4+ sites. In the first Zr4+ site, Zr4+ is bonded to six F1- atoms to form a mixture of distorted corner and face-sharing ZrF6 octahedra. The corner-sharing octahedral tilt angles are 34°. There are a spread of Zr–F bond distances ranging from 1.92–2.20 Å. In the second Zr4+ site, Zr4+ is bonded to six F1- atoms to form a mixture of distorted corner and face-sharing ZrF6 octahedra. The corner-sharing octahedral tilt angles are 34°. There are a spread of Zr–F bond distances ranging from 1.92–2.24 Å. There are eight inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one Zr4+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one Zr4+ atom. In the third F1- site, F1- is bonded in a single-bond geometry to one Zr4+ atom. In the fourth F1- site, F1- is bonded in an L-shaped geometry to two Zr4+ atoms. In the fifth F1- site, F1- is bonded in an L-shaped geometry to two Zr4+ atoms. In the sixth F1- site, F1- is bonded in an L-shaped geometry to two Zr4+ atoms. In the seventh F1- site, F1- is bonded in a bent 150 degrees geometry to two Zr4+ atoms. In the eighth F1- site, F1- is bonded in a single-bond geometry to one Zr4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on ZrH8(NF3)2 by Materials Project

(NH4)2ZrF6 crystallizes in the orthorhombic Pca2_1 space group. The structure is one-dimensional and consists of four ammonia molecules; four ammonia molecules; four ammonia molecules; four ammonium molecules; eight hydrogen molecules; and four ZrHF6 ribbons oriented in the (1, 0, 0) direction. In each ZrHF6 ribbon, there are two inequivalent Zr4+ sites. In the first Zr4+ site, Zr4+ is bonded in a 6-coordinate geometry to six F1- atoms. There are a spread of Zr–F bond distances ranging from 1.97–2.39 Å. In the second Zr4+ site, Zr4+ is bonded in a distorted pentagonal bipyramidal geometry to seven F1- atoms. There are a spread of Zr–F bond distances ranging from 2.00–2.22 Å. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a linear geometry to two F1- atoms. There is one shorter (1.01 Å) and one longer (1.38 Å) H–F bond length. In the second H1+ site, H1+ is bonded in a linear geometry to two F1- atoms. There is one shorter (1.06 Å) and one longer (1.28 Å) H–F bond length. There are twelve inequivalent F1- sites. In the first F1- site, F1- is bonded in a bent 120 degrees geometry to one Zr4+ and one H1+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one Zr4+ atom. In the third F1- site, F1- is bonded in a single-bond geometry to one Zr4+ and one H1+ atom. In the fourth F1- site, F1- is bonded in a single-bond geometry to one Zr4+ atom. In the fifth F1- site, F1- is bonded in a single-bond geometry to one Zr4+ atom. In the sixth F1- site, F1- is bonded in a bent 150 degrees geometry to two Zr4+ atoms. In the seventh F1- site, F1- is bonded in a distorted single-bond geometry to one Zr4+ atom. In the eighth F1- site, F1- is bonded in a distorted bent 120 degrees geometry to one Zr4+ and one H1+ atom. In the ninth F1- site, F1- is bonded in a single-bond geometry to one H1+ atom. In the tenth F1- site, F1- is bonded in a single-bond geometry to one Zr4+ atom. In the eleventh F1- site, F1- is bonded in a distorted bent 150 degrees geometry to two Zr4+ atoms. In the twelfth F1- site, F1- is bonded in a single-bond geometry to one Zr4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on ZrH24C8(NF3)2 by Materials Project

ZrF6(N(CH3)4)2 is Silicon tetrafluoride-derived structured and crystallizes in the trigonal R-3 space group. The structure is zero-dimensional and consists of six tetramethylammonium molecules and three ZrF6 clusters. In each ZrF6 cluster, Zr4+ is bonded in an octahedral geometry to six equivalent F1- atoms. All Zr–F bond lengths are 2.05 Å. F1- is bonded in a single-bond geometry to one Zr4+ atom.

36 MATERIALS SCIENCE↗