omplexes of rhodium and platinum with 4,6-dinitro-5,7-dihydroxybenzo[1,2-c][1,2,5]oxadiazole 1-oxide

Complexes being not described earlier and being obtained by the interaction of RhCl3·nH2O and PtCl4 with disodium complex of 4,6-dinitro-5,7-dihydroxybenzo[1,2-c][1,2,5]oxadiazole 1-oxide (Na2DODNBF) of the following composition: [Rh4III(C6N4O8)4Cl16]2·Rh26IIICl9·3H2O and [PtII(HC6N4O8)Cl·H2O]·10H2O have been synthesized and characterized by TG/DSC, ES (UV–vis), IR, 13C NMR, MS (MALDI TOF) methods and quantum-chemical modeling. It has been established that the rhodium (III) compound is a complicated polynuclear-polyligand complex; the Pt(II) compound represents a mononuclear-monoligand complex, in which the selected ligand acts as a bidentate. Changes in oxidation state of RhIII ion during complexing has not been observed, while for platinum the reduction of PtIV into PtII and coordination of ligand to PtII ion has been revealed.