Synthesis and Structures of Dioxomolybdenum(VI) Complexes with Hydrazones of β-Dicarbonic Compounds. Crystal Structures of Solvate Complexes МоО2L¹⋅МеОН (H2L¹ = Isonicotinoylhydrazone Acetylacetone) and МоО2L² ⋅Me2SO (H2L² = Benzoylhydrazone Benzoylacetone)

Two solvate complexes МоО2L1·МеОН (H2L1 is isonicotinoyl hydrazone acetylacetone) (I) and МоО2L2·Me2SO (H2L2 is benzoylhydrazone benzoylacetone) (II) have been synthesized and their structures have been determined by X-ray diffraction. Molybdenum atoms in I and II coordinate two ligands cis-O2(oxo), N(L1,2), O(Solv) atoms in trans-positions to O(oxo), and two O(L1,2) atoms in cis-positions to O(oxo) and in trans-positions to each other to form an octahedral geometry. The average bond lengths in I and II are Mo–O(oxo) 1.698 and 1.695 Å, Mo–N(L1,2) 2.216 and 2.217 Å, Mo–O(L1,2) 1.985 and 1.969 Å, Mo–O(Solv) 2.333 and 2.316 Å, respectively. The O(oxo)MoO (oxo) bond angles are 105.7° and 105.2° in I and II, respectively.