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Materials Data on TiNF by Materials Project

TiNF crystallizes in the tetragonal I4_1md space group. The structure is three-dimensional. Ti4+ is bonded to three equivalent N3- and two equivalent F1- atoms to form distorted corner-sharing TiN3F2 trigonal bipyramids. There is one shorter (1.81 Å) and two longer (2.07 Å) Ti–N bond length. Both Ti–F bond lengths are 1.96 Å. N3- is bonded in a 3-coordinate geometry to three equivalent Ti4+ atoms. F1- is bonded in a linear geometry to two equivalent Ti4+ atoms.

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Materials Data on TiNF by Materials Project

Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

36 MATERIALS SCIENCE↗

Materials Data on TiNF5 by Materials Project

TiF4NF crystallizes in the monoclinic P2_1/c space group. The structure is one-dimensional and consists of sixteen monofluoroamine molecules and two TiF4 ribbons oriented in the (0, 0, 1) direction. In each TiF4 ribbon, there are four inequivalent Ti4+ sites. In the first Ti4+ site, Ti4+ is bonded to five F1- atoms to form distorted corner-sharing TiF5 trigonal bipyramids. There are a spread of Ti–F bond distances ranging from 1.75–2.01 Å. In the second Ti4+ site, Ti4+ is bonded to five F1- atoms to form corner-sharing TiF5 trigonal bipyramids. There are a spread of Ti–F bond distances ranging from 1.76–2.02 Å. In the third Ti4+ site, Ti4+ is bonded to five F1- atoms to form distorted corner-sharing TiF5 trigonal bipyramids. There are a spread of Ti–F bond distances ranging from 1.76–2.01 Å. In the fourth Ti4+ site, Ti4+ is bonded to five F1- atoms to form distorted corner-sharing TiF5 trigonal bipyramids. There are a spread of Ti–F bond distances ranging from 1.76–2.00 Å. There are sixteen inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one Ti4+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one Ti4+ atom. In the third F1- site, F1- is bonded in a single-bond geometry to one Ti4+ atom. In the fourth F1- site, F1- is bonded in a single-bond geometry to one Ti4+ atom. In the fifth F1- site, F1- is bonded in a bent 150 degrees geometry to two Ti4+ atoms. In the sixth F1- site, F1- is bonded in a single-bond geometry to one Ti4+ atom. In the seventh F1- site, F1- is bonded in a single-bond geometry to one Ti4+ atom. In the eighth F1- site, F1- is bonded in a single-bond geometry to one Ti4+ atom. In the ninth F1- site, F1- is bonded in a bent 150 degrees geometry to two Ti4+ atoms. In the tenth F1- site, F1- is bonded in a linear geometry to two Ti4+ atoms. In the eleventh F1- site, F1- is bonded in a single-bond geometry to one Ti4+ atom. In the twelfth F1- site, F1- is bonded in a single-bond geometry to one Ti4+ atom. In the thirteenth F1- site, F1- is bonded in a bent 150 degrees geometry to two Ti4+ atoms. In the fourteenth F1- site, F1- is bonded in a single-bond geometry to one Ti4+ atom. In the fifteenth F1- site, F1- is bonded in a single-bond geometry to one Ti4+ atom. In the sixteenth F1- site, F1- is bonded in a single-bond geometry to one Ti4+ atom.

36 MATERIALS SCIENCE↗

Materials Data on TiNF by Materials Project

TiNF crystallizes in the orthorhombic Pmmn space group. The structure is two-dimensional and consists of one TiNF sheet oriented in the (0, 0, 1) direction. Ti4+ is bonded to four equivalent N3- and two equivalent F1- atoms to form a mixture of edge and corner-sharing TiN4F2 octahedra. The corner-sharing octahedral tilt angles are 20°. All Ti–N bond lengths are 2.01 Å. Both Ti–F bond lengths are 2.04 Å. N3- is bonded to four equivalent Ti4+ atoms to form a mixture of distorted edge and corner-sharing NTi4 trigonal pyramids. F1- is bonded in a water-like geometry to two equivalent Ti4+ atoms.

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Materials Data on Ti(NF2)3 by Materials Project

TiNF6N2 crystallizes in the cubic Fm-3m space group. The structure is three-dimensional and consists of eight ammonia molecules and one TiNF6 framework. In the TiNF6 framework, Ti3+ is bonded to six equivalent F1- atoms to form TiF6 octahedra that share corners with six equivalent NF6 octahedra. The corner-sharing octahedral tilt angles are 0°. All Ti–F bond lengths are 1.91 Å. N1+ is bonded to six equivalent F1- atoms to form NF6 octahedra that share corners with six equivalent TiF6 octahedra. The corner-sharing octahedral tilt angles are 0°. All N–F bond lengths are 2.08 Å. F1- is bonded in a distorted linear geometry to one Ti3+ and one N1+ atom.

36 MATERIALS SCIENCE↗