title: Vanadium polyoxoanion-bridged macrocyclic metal complexes: from one-dimensional to three-dimensional structures.
abstract: The reactions of four-coordinated transition metal macrocyclic complexes [ML](ClO(4))(2) (L = 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane, M = Ni, Cu) with NH4VO3 under different conditions gave four coordination polymers of {[(CuL)(0.5)(H2L)(1.5)][H2V10O2)] x 6H(2)O}(n) (1x6H(2)O), {[NiL](3)[V16O38(H2O)] x 6H(2)O}(n) (2 x 6H(2)O), {[NiL][VO(3)](2) x 0.33H2O}(n) (3.0.33H(2)O), and {[CuL][VO(3)](2) x 0.33H(2)O}(n) (4 x 0.33H2O). Single crystal X-ray diffraction analyses reveal that four diverse vanadium polyoxoanions, [H2V1oO28)(4-) cluster, [V16O38(H2O)](6-) cage, [V6O18](6-) ring, and [VO(3)](n)(n-) chain, were obtained from the same reactant NH(4)VO(3) under different conditions. In 1, the cluster anion [H2V10O28](4-) alternately bridges [CuL]2+/[H2L]2+ to form a one-dimensional chain, and the [V16O38(H2O)](6-) cage in 2 links three [NiL]2+ into a two-dimensional sheet. Compounds 3 and 4 show three-dimensional structures, which are constructed by the connections of hexanuclear [V6O18](6-) rings with [NiL]2+ in 3 and [VO3](n)(n-) chains with [CuL]2+ in 4, respectively, generating one-dimensional channels occupied by guest water molecules.
authors.affiliation: MOE Key Laboratory of Bioinorganic and Synthetic Chemistry/State Key Laboratory of Optoelectronic Materials and Technologies/School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, China.
authors.forename: Guang-Chuan
authors.initials: GC
authors.lastname: Ou
authors.forename: Long
authors.initials: L
authors.lastname: Jiang
authors.forename: Xiao-Long
authors.initials: XL
authors.lastname: Feng
authors.forename: Tong-Bu
authors.initials: TB
authors.lastname: Lu
mesh_terms: D000838:Anions; D018360:Crystallography, X-Ray; D047028:Macrocyclic Compounds / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D014639:Vanadium / Q000737:chemistry*
chemical_list: D000838:Anions; D047028:Macrocyclic Compounds; D014639:Vanadium