Svojstva homo- i heterometalnih kompleksnih spojeva priređenih iz tris(oksalatnih) i tris(kloranilatnih) građevnih blokova

The reactions of building block A3[ML3]·3H2O {A = K+, NH4+ or [(C4H9)4N)4]+; M = Cr3+ or Fe3+; L = C2O42– or C6O4Cl22–}, copper(II) salt and N-donor ligand (imidazole, 2,2'-bipyridine, 1,10-phenanthroline or 2,2':6',2"-terpyridine), with the addition of tetrachloroquinone and KI in some reactions were studied, in layering technique or in hydrothermal conditions. 51 new compounds were prepared: 35 oxalate-based {29 heterometallic [19 (CuIICrIII) and 10 (CuIIFeII/III)]}, and 12 chloranilate {7 heterometallic [4 (CuIICrIII) and 3 [CuIIFeIII]} were isolated. In these reactions 9 complexes with mononuclear, 11 with dinuclear, 5 with trinuclear, 2 with tetranuclear and 1 with hexanuclear units were obtained. 13 one-dimensional and 6 three-dimensional coordination polymers were formed. IR and structural characterization was done for all the complexes. For 15 compounds thermal properties were investigated, for 14 compounds with bridging oxalate group magnetic properties, and for 7 compounds electric properties were studied. 5 selected heterometallic oxalate complexes were tested as molecular precursors for mixed-metal oxides and single-phased CuCrO2 was obtained. Its photocatalytic activity in water splitting reaction was tested. 2 compounds showed photochromism and 1 thermochromism.