Synthesis, characterization, and crystal structures of two novel high-nuclear nickel-substituted dimeric polyoxometalates.

Journal Article (Journal Article)

Two novel high-nuclear Ni-substituted polyoxometalates Na9K[Ni7(OH)4(H2O)(CO3)2(HCO3)(A-alpha-SiW9O34)(beta-SiW10O37)].5H3O.18H2O (1) and K6Na4[{Ni6(H2O)4(mu2-H2O)4(mu3-OH)2}(x-SiW9O34)2].17.5H2O (2) have been obtained by reaction of K(8)[gamma-SiW10O36] with NiCl2.2H2O in basic conditions. Compounds 1 and 2 all represent the first polyoxometalates substituted by seven and six Ni centers, respectively. Also, compound 1 exhibits a novel asymmetric dimeric structure, composed of [A-alpha-SiW9O34]10- and [beta-SiW10O37]10- units linked by a Ni7 cluster and three carbonates, which exhibit tri- and bidentate coordination modes in 1.

Full Text

Duke Authors

Cited Authors

  • Zhang, Z; Li, Y; Wang, E; Wang, X; Qin, C; An, H

Published Date

  • May 29, 2006

Published In

Volume / Issue

  • 45 / 11

Start / End Page

  • 4313 - 4315

PubMed ID

  • 16711672

International Standard Serial Number (ISSN)

  • 0020-1669

Digital Object Identifier (DOI)

  • 10.1021/ic052149n


  • eng

Conference Location

  • United States