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

Five new organic-inorganic assemblies, [Co(en)(3)][Co(en)(2)As(8)V(14)O(42)(H(2)O)].16H(2)O (1), [Ni(Meen)(3)](4)[Ni(Meen)(2)][As(8)V(14)O(42)(NO(3))](2).8H(2)O (2), [Cd(en)(3)][Cd(phen)(en)(H(2)O)(2)][(en)CdAs(8)V(13)O(41)(H(2)O)].1.5H(2)O (3), [Cd(phen)(2)(en)](2)[(phen)CdAs(8)V(13)O(41)(H(2)O)].21H(2)O.phen (4), [Zn(en)(2)](2)[(bpe)(2)Zn(2)As(8)V(12)O(40)(H(2)O)] (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 [As(8)V(14)O(42)] cluster; compounds 3 and 4 are constructed from the Cd-substituted polyoxovanadate [CdAs(8)V(13)O(41)] cluster, while compound 5 consists of bizinic-substituted polyoxovanadate [Zn(2)As(8)V(12)O(40)] 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.