Reactions of P4S10 and pyPS2Cl with N,N-diphenylurea andN,N-diphenylthiourea

The reaction of P4S10 (1) with N,N-diphenylurea (PhNH)2CO (2) results in new heterocyclic compounds containing the (PSN)2 cycle and the cyclic thiophosphates [pyH]2[P2S8] (5), [pyH]2[P2S7] (6) and [pyH]3[P3S9] (7). A similar reaction, but carried out with N,N -diphenylthiourea (PhNH)2CS (8), leads to the formation of 4 and 6. pyPS2Cl (9), used as an alternative starting material, also yields compounds 3, 4, 5, and further [pyH][PS2Cl2] (10) and S8 after reaction with 2. Compound 3 reacts with Pd(CH3COO)2, with the formation of the complex [Pd(Ph2N2COPS2)2] (11). The crystal structures of 3 and 7 were determined by single crystal X-ray diffraction.