Synthesis and Crystal Structure of a New Salt of the Water-Stable Hexathiohypodiphosphate Anion: [py2Li]4[P2S6] ·2 py

ABSTRACT A new rare example of a synthetic route in solution to the hexathiohypodiphosphate anion P2S64− is presented. Starting from P4S3, Li2S, and elemental sulfur in pyridine, this reaction yields yellow block‐shaped crystals of [py2Li]4[P2S6] · 2 py (1). The molecular structure of this hitherto unknown compound was determined by single crystal X‐ray diffraction and reveals a heteronorbornane skeleton within the Li4P2S6 entity.