Available online 2 December 2008.
A new phosphorus polyanion ∞1(P103−) has been determined within the novel double silver mercury phosphide iodide HgAg6P20I2. It crystallizes in a monoclinic space group P21/m with the lattice parameters a = 6.718(1) Å, b = 27.701(6) Å, c = 7.383(1) Å, β = 113.98(3)°, and Z = 2. An infinite one-dimensional phosphorus polyanion ∞1(P103−) is built from short tubular fragments P103− joint through common phosphorus atoms. Mercury and silver atoms having the same coordination but different formal charge are linked to the phosphorus atoms.
Keywords: Transition metal alloys and compounds; Chemical synthesis; Crystal structure
PACS classification codes: 61.66.−f; 61.66.Fn
Corresponding author. Tel.: +7 495 9391200; fax: +7 495 9394788.1
Present address: Institute of Applied Acoustics, 9th May Street 9a, Dubna, Moscow Region 141980, Russia.