III )-, (P III , P V )-, (P III , P IV )-, (P IV , P V )-, and (P V , P V )-Diphosphorus-Containing Compounds Based on 1,2,3-and 1,2,4-Trihydroxybenzenes (2015) Synthesis of (P III , P III )-, (P III , P V )-, (P III , P IV )-, (P IV , P V )-, and (P V , P V )-DiphosphorusContaining Compounds Based on 1,2,3-and 1,2,4-Trihydroxybenzenes, Phosphorus, Sulfur, and Silicon and the Related Elements, 190:5-6, 772-777,