Issue 1, 2009

Vanadium polyoxoanion-bridged macrocyclic metal complexes: from one-dimensional to three-dimensional structures

Abstract

The reactions of four-coordinated transition metal macrocyclic complexes [ML](ClO4)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][H2V10O28]·6H2O}n (1·6H2O), {[NiL]3[V16O38(H2O)]·6H2O}n (2·6H2O), {[NiL][VO3]2·0.33H2O}n (3·0.33H2O), and {[CuL][VO3]2·0.33H2O}n (4·0.33H2O). Single crystal X-ray diffraction analyses reveal that four diverse vanadium polyoxoanions, [H2V10O28]4−cluster, [V16O38(H2O)]6− cage, [V6O18]6− ring, and [VO3]nn− chain, were obtained from the same reactant NH4VO3 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]nn− chains with [CuL]2+ in 4, respectively, generating one-dimensional channels occupied by guest water molecules.

Graphical abstract: Vanadium polyoxoanion-bridged macrocyclic metal complexes: from one-dimensional to three-dimensional structures

Supplementary files

Article information

Article type
Paper
Submitted
25 Jun 2008
Accepted
01 Sep 2008
First published
18 Nov 2008

Dalton Trans., 2009, 71-76

Vanadium polyoxoanion-bridged macrocyclic metal complexes: from one-dimensional to three-dimensional structures

G. Ou, L. Jiang, X. Feng and T. Lu, Dalton Trans., 2009, 71 DOI: 10.1039/B810802A

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