Hydrothermal syntheses and structural characterizations of two ML-Containing polyoxomolybdates: [CuII2(HL) 3]2[Mo8O26]·(H 2O)4 and [NiII(HL)3] 2(Mo8O26)·(H2O)3 (HL = 3-(2-Pyridyl)pyrazole)

Document Type

Article

Publication Date

8-27-2010

Abstract

Two new polyoxomolybdate compounds, namely CuII2(HL)3]2[Mo8O26] ·(H2O)4 (1) and [NiII(HL) 3]2(Mo8O26)·(H 2O)3 (2) (HL = 3-(2-pyridyl)pyrazole), were designed and synthesized under hydrothermal conditions. X-ray diffraction analyses reveal that compound 1 consists of one β-Mo8O264-cluster and a Cu2 dimer which is built from two Cu(II) ions linked by three 3-(2- pyridyl)pyrazole ligands. Compound 2 is generated by two kinds of polyoxomolybdate clusters of α-[Mo8O 26]4- and β-[Mo8O26] 4-, In complexes 1 and 2, the multi-dimensional frameworks are constructed with the help of hydrogen-bonding links between the terminaloxygen atoms of [Mo8O26]4-, water molecules, and 3-(2-pyridyl)pyrazole ligands. Crystal data of 1: C24H 25Cu2Mo4N9O15, M r = 1190.37, monoclinic, space group P21/c, a = 10.850(2), b = 18.510(4), c = 17.230(3) Å, β = 100.57(3)°, V = 3401.6(12) Å3, Z = 4, Dc = 2.324 g/cm3, F(000) = 2312, μ = 2.742 mm 1, R = 0.0302 and wR = 0.0775 (I > 2 (I)); Crystal data for 2: C48H48Mo8N 18Ni2O29, Mr = 2225.98, monoclinic, space group P21/n, a = 20.799(2), b = 14.7970(13), c = 23.141(2) Å, β = 91.6180(10)°, V = 7119.0(11) Å3, Z = 4, D c= 2.077 g/cm3, F(000) = 4344, μ = 1.968 mm 1, R = 0.0309 and wR = 0.0696 (I > 2 (I)).

Publication Source (Journal or Book title)

Jiegou Huaxue

First Page

1284

Last Page

1289

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