Abstract: | Synthesis and Crystal Structure of Ammonium Tetraamminelithium Amidotrithiophosphate‐Ammonia(1/1)(NH4)Li(NH3)4]P(NH2)S3]·NH3 Colourless crystals of (NH4)Li(NH3)4]P(NH2)S3]·NH3 were prepared by the reduction of P4S10 with a solution of lithium in liquid ammonia. The X‐ray structure determination shows them to contain the pseudo‐tetrahedral amidotrithiophosphate anion P(NH2)S3]2? (point group CS), which is the hitherto unknown final member of a series of previously characterized amidothiophosphates. The ammonium ion and the ammonia molecule of solvation form an diamminehydrogen(1+)‐ion N2H7+ with a short, nearly linear hydrogen bond of 2.864(3) Å. |