Metal-controlled self-assembly of arsenic-vanadium-cluster backbones with organic ligands

Five new organic-inorganic assemblies, [Co(en)(3)][Co(en)(2)As8V14O42(H2O)]center dot 16H(2)O (1), [Ni(Meen)(3)](4)[Ni(Meen)(2)][As8V14O42(NO3)](2)center dot 8H(2)O (2), [Cd(en)(3)][Cd(phen)(en)(H2O)(2)][(en)CdAs8V13O41(H2O)]center dot 1.5H(2)O (3), [Cd(phen)(2)(en)](2)[(phen)CdAs8V13O41(H2O)]center dot 21H(2)O center dot phen (4), [Zn(en)(2)](2)[(bpe)(2)Zn2As8V12O40(H2O)] (5) (en = ethylenediamine, Meen = 1,2-diaminopropane, phen = 1,10-phenanthroline, and bpe=1,2-bis(4-pyridyl) ethylene) have been synthesized and characterized. Among them, compounds 1 and 2 are constructed from the [As8V14O42] cluster; compounds 3 and 4 are constructed from the Cd-substituted polyoxovanadate [CdAs8V13O41] cluster, while compound 5 consists of bizinic-substituted polyoxovanadate [Zn2As8V12O40] building units. It can be assumed that the metal ions used in these reaction systems play a crucial role in controlling the formation of the arsenic-vanadium-cluster backbones, and further leading to the formation of hybrids based on these clusters.