Synthesis, structural assessment and some reaction profiles of peroxo complexes of V, Mo and UO2 2plus, a fluoro compound of Cr, and mixed_ligand molecular complexes of the type M _acac_2_dmpz_n, _dmpz equals 3, 5_dimethylpyrazole, M equals Mn, Co, Ni: n equals 2, m equals VO2plus: n equals l, and M equals UO2 2plus; n equals 4