A New Supramolecular Assembly Based on Triple-Dawson-Type Polyoxometalate and 3d-4f Heterometallic Cluster

作者：Li Yun Wu; Li Yang Guang; Wang Yong Hui^*; Feng Xiao Jia; Lu Ying; Wang En Bo

来源：Inorganic Chemistry, 2009, 48(14): 6452-6458.

DOI：10.1021/ic9001362

The introduction of hexavacant Dawson-type precursor K(12)[H(2)P(2)W(12)O(48)]center dot 24H(2)O into a HOAc/NaOAc (OAc(-) = acetate) buffer system containing (NH(4))(2)[Ce(IV)(NO(3))(6)] and Mn(II)(OAc)(2)center dot 4H(2)O led to the isolation of a new compound, Na(20)[Ce(3)(IV)-Mn(2)(IV)O(6)(OAc)(6)(H(2)O)(9)](2)[Mn(2)(III)P(2)W(16)O(60)](3)center dot 21H(2)O (1). Compound 1 contains unusual triple-Dawson-type polyoxoanions [Mn(2)(III)P(2)W(16)O(60)](3)(24-) and bipyramid-like 3d-4f heterometallic clusters [Ce(3)(IV)Mn(2)(IV)O(6)(OAc)(6)(H(2)O)(9)](2+), which are arranged in a 3-D supramolecular assembly with 1-D channels. The Na(+) cations and solvent water molecules reside in the channels. Crystal data for 1 are as follows: hexagonal, P6(3)/mcm (No. 193), a=24.959(4) angstrom, c=26.923(5) angstrom, gamma=120 degrees, V=14525(4) angstrom(3), and Z=2. The electrochemical and electrocatalytic properties of compound 1 have been investigated.

• 出版日期2009-7-20
• 单位东北师范大学