Two unprecedented inorganic–organic boxlike and chainlike hybrids based on arsenic–vanadium clusters linked by nickel complexes

Abstract

Two novel organic–inorganic hybrid arsenic-vanadates, [{Ni(en) 2} 4(4,4′-bipy) 4{Ni(H 2O) 2}] 2[As 8V 14O 42(NO 3)] 4·16H 2O 1 and [Ni(en) 2(H 2O) 2] 2[{Ni(en) 2(H 2O)} 2As 8V 14O 42(NO 3)][{Ni(en) 2}As 8V 14O 42(NO 3)]·6H 2O 2 are reported in this study. Crystal data for compound 1: Tetragonal, I4/ m, a=27.507(4) Å, b=27.507(4) Å, c=22.101(4) Å; V=16722(5) Å 3, Z=2, R(final)=0.0508. Crystal data for compound 2: Triclinic, P–1, a=11.530(2) Å, b=14.883(3) Å, c=21.330(4) Å, α=76.94(3)°, β=76.58(3)°, γ=69.54(3)°, V=3293.4(1) Å 3, Z=1, R(final)=0.0559. The boxlike structure of compound 1 is designed from [{Ni(en) 2} 4(4,4′-bipy) 4{Ni(H 2O) 2}] sheets pillared by [ α-As 8V 14O 42] clusters, which represents the first mixed-organic ligand-decorated tetrameric As–V–O cluster. Compound 2 is constructed from the rarely [ β-As 8V 14O 42] clusters and Ni coordination complex fragments. The electrochemical property and magnetic property of compound 1 have been studied.