Received 26 June 2008; 

revised 1 September 2008; 

accepted 4 September 2008. 

Available online 2 December 2008.

Abstract

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

Article Outline

1. Introduction

2. Results and discussion

3. Experimental details

3.1. Synthesis

3.2. Single crystal preparation

3.3. Crystal structure determination

3.4. EDX analysis

Acknowledgements

References

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.