The novel class of inorganic nanoclusters, \{\[AlO\-4Al\-\{12\}(OH)\-\{24\}(H\-2O)\-\{12\}\]\}\{\[SiW\-\{11\}O\-\{39\}CoCl\]\}\511H\-2O, \{\[AlO\-4Al\-\{12\}(OH)\-\{24\}(H\-2O)\-\{12\}\]\}\{\[P\-2W\-\{18\}O\-\{62\}\]\}Cl\533H\-2O and \{\[AlO\-4Al\-\{12\}(OH)\-\{24\}(H\-2O)\-\{12\}\]\}\-2\[NaP\-5W\-\{30\}O\-\{110\}\]\524H\-2O, consisting of Keggin cations and heteropolyoxometalates, has been synthesized and characterized by ICP, IR and NMR. It is proved that the intrinsic identities of Keggin cation and heteropolyanions of the clusters are preserved within the gels.
The novel amino acid containing polyoxometalate K 6[Cu(Ala) 2(H 2O) 2] 2[Cu 4(H 2O) 2\5(AsW 9O 34 ) 2]·16H 2O was synthesized from the reaction of K 10 [Cu 4(H 2O) 2(AsW 9O 34 ) 2]·20H 2O with β alanine. Its structure has been determined by single crystal X ray diffraction. It crystallizes in the triclinic space group P1 , with a =1.196 3(2) nm, b =1.536 5(3) nm, c =1.591 4(3) nm, α=93.97(3)°, β=110.88(3)°, γ=101.07(3)°, V =2.651 8(9) nm 3 and Z =1. Least squares refinement of the structure leads to R and R w factors of 0.067 3 and 0.162 8, respectively. An unusual structural feature of the compound is that the polyanion [Cu 4(H 2O) 2(AsW 9O 34 ) 2] 10- is linked with the amino acid complex of Cu 2+ by a μ oxygen atom.
