rac-{[2-(Diphenylthiophosphoryl)ferrocenyl]methyl}dimethylammonium diphenyldithiophosphinate

2-(Diphenylthiophosphino)dimethylaminomethylferrocene is a key intermediate in the synthesis of various ferrocenyl ligands. During one such synthesis, the title compound, [Fe(C5H5)(C20H22NPS)](C12H10PS2), was isolated as a by-product. It is built up by association of (2-(diphenylphosphino)ferrocenyl)methyl)dimethylammonium cations and diphenylphosphino dithioate anions. N—H⋯S, C—H⋯S and C—H⋯π interactions link the anions and cations. Each anion–cation pair is linked two by two through C—H⋯π interactions, forming pseudo dimers.

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