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