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Materials Data on As3W by Materials Project

WAs3 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. W3+ is bonded to twelve equivalent As1- atoms to form a mixture of face and corner-sharing WAs12 cuboctahedra. There are six shorter (2.77 Å) and six longer (3.04 Å) W–As bond lengths. As1- is bonded in a 10-coordinate geometry to four equivalent W3+ and six equivalent As1- atoms. There are two shorter (2.66 Å) and four longer (3.03 Å) As–As bond lengths.

36 MATERIALS SCIENCE↗

Materials Data on As3W by Materials Project

WAs3 is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. W3+ is bonded in a distorted body-centered cubic geometry to fourteen As1- atoms. There are eight shorter (2.80 Å) and six longer (3.23 Å) W–As bond lengths. There are two inequivalent As1- sites. In the first As1- site, As1- is bonded in a body-centered cubic geometry to four equivalent W3+ and four equivalent As1- atoms. All As–As bond lengths are 2.80 Å. In the second As1- site, As1- is bonded in a 8-coordinate geometry to six equivalent W3+ and eight equivalent As1- atoms.

36 MATERIALS SCIENCE↗