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Dalton Transactions

The international journal for inorganic, organometallic and bioinorganic chemistry



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Dalton Trans., 2009, 9843 - 9848, DOI: 10.1039/b907619k

Syntheses, crystal structures, thermal stabilities, luminescence and magnetism of two 3D pillared metal phosphonates

Ruibiao Fu, Shengmin Hu and Xintao Wu

Two pillared metal phosphonates: [Mn3(4,4-bipy)(L)2]·(4,4-bipy)0.5 ( 1) and [Co3(4,4-bipy)(H2O)2(L)2]·(4,4-bipy)0.5 ( 2) (L = O3PCH(OH)CO2), have been synthesized hydrothermally, and characterized by single-crystal X-ray diffraction along with powder XRD, EA, IR and TGA. In compounds 1–2, Mn(II) and Co(II) ions are in octahedron coordination geometries and bridged by 2-hydroxyl(phosphono)acetate through -OH, -COO and -PO3 groups into a hybrid layer. The layers are further pillared by the coordinated 4,4-bipy into a 3D neutral framework possessing 1D parallelogram-shaped channels with approximate sizes 9 × 11 Å2, which are occupied by the isolated 4,4-bipy. Solid 1 is thermally stable up to 300 °C under an air atmosphere and displays a purple-blue luminescence. The results of magnetic measurement indicate solid 1 is a metamagnet.

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