State of molybdenum clusters in solutions: III. Formation enthalpies of intermediate products of stepwise K 2 [Мо 2 (SO 4 ) 4 ] oxidation in 1 M H 2 SO 4 solution

The enthalpies of stepwise oxidation reactions of the ions [Mo 2 (SO 4 ) 4 ] 4– → [Mo 2 (SO 4 ) 4 ] 3– → [Mo 2 (SO 4 ) 4 ] 2– → [Мо 2 (μ-О) 2 O 2 (Н 2 О) 6 ] 2– → 2(MoO 4 ) 2– , and also the enthalpies of formation of the binuclear molybdenum complexes K 3 [Mo 2 (SO 4 ) 4 ], K 2 [Mo 2 (SO 4 ) 4 ], and [Мо 2 (μ-О) 2 O 2 (Н 2 О) 6 ]SO 4 in a 1 М sulfuric acid solution at 298.15 K were determined by the calorimetric titration with continuous titrant input.