py2P2S7: a bis(pyridine)adduct stabilized phosphorus sulfideElectronic supplementary information (ESI) available: Crystallographic data and experimental details of py2P2S7. CCDC 762680. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c0cc00106f

The new phosphorus sulfide P 2 S 7 , stabilized as the bis(pyridinium) adduct, was obtained from the reaction of P 4 S 10 and sulfur in pyridine, and could be isolated in the form of colourless block-shaped crystals which were characterized using single crystal X-ray diffraction. Coordination of pyridine is weak ( d (P-N) = 187 pm) which is supported also by quantum chemical calculations. The new phosphorus sulfide P 2 S 7 , stabilized as the bis(pyridinium) adduct, was obtained from the reaction of P 4 S 10 and sulfur in pyridine. Coordination of pyridine is weak ( d (P-N) = 187 pm) which is supported also by quantum chemical calculations.