Crystal Structure of XeF+AsF6-1

Abstract

Crystals of XeF+AsF6-1 are monoclinic, space group P21/n, a = 6.308 (3) Å, b = 6.275 (3) Å, c = 16.023 (5) Å, β = 99.97 (5)°, V= 624.66 Å3, Z = 4, and dx = 3.61 g cm -3, at 24 °C. X-ray diffraction data were measured with counter methods and Mo Kα radiation. With anisotropic temperature factors for all atoms, R = 0.033 for 777 independent reflections (I > 3σ). The structure consists of ion pairs connected by a bridging fluorine atom into FXeFAsF5 units. The FXeF portion of the molecule is linear (angle = 178.9 (7)°) with Xe-F = 1.873 (6) Å (terminal) and 2.212 (5) Å (bridging). The FAsF5 portion of the molecule is roughly octahedral with cis F-As-F angles ranging from 85.3 (3) to 94.6 (5)°; the five terminal As-F distances range from 1.676 (5) to 1.690 (8) Å and the bridging As-F distance is 1.813 (6) Å. The bridge Xe-F-As angle is 134.8 (2)°.

Document Type

Article

DOI

https://doi.org/10.1021/ic50183a044

Publication Date

1-1-1978

Journal Title

Inorganic Chemistry

Link to Full Text

Share

COinS