Syntheses and Crystal Structure of Hg7P4Br6

✍ Scribed by A.V. Shevelkov; E.V. Dikarev; B.A. Popovkin

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 140 KB
• Volume: 104
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1006/jssc.1993.1151

✦ Synopsis

The mercury phosphide-bromide (\mathrm{Hg}{7} \mathrm{P}{4} \mathrm{Br}{6}) has been synthesized and its structure has been refined based on single-crystal X-ray measurements to (R=0.064) and (R{\mathrm{w}}=0.065). The compound crystallizes in the space group (P 2^{\gamma} / c) of the monoclinic system with two formula units in a cefl of dimensions (a=6.0452(7), b=19.848(2), c=7.5596(8) \AA), and (\beta=104.214(9)^{\circ}). The structure is built of (\mathrm{Hg}{6}) octahedra filled with (\mathrm{P}{2}^{4-}) dumbbells. The octahedra share 5 vertices of 6 with neighboring octahedra forming a three-dimensional network. The relationship between the structures of (\mathrm{Hg}{7} \mathrm{P}{4} \mathrm{Br}{6}) and (\mathrm{Hg}{7} \mathrm{Sb}{4} \mathrm{Br}{6}) is discussed. 1993 Academic Press, Inc.