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Title: Novel Open-Framework Tin(II) Phosphate Materials Containing Sn-O-Sn Linkages and Three-Coordinated Oxygens
Authors: Natarajan, S
Ayyappan, S
Cheetham, A K
Rao, C N R
Keywords: Structural Characterization
Issue Date: Jun-1998
Publisher: American Chemical Society
Citation: Chemical Of Materials 10(6), 1627-1631 (1998)
Abstract: Two new open-framework tin(II) phosphate materials have been synthesized hydrothermally and their structures elucidated by single-crystal X-ray diffraction. These materials exhibit an entirely new building motif, unknown in phosphate-based materials, viz., vertex-sharing truncated square-pyramidal SnO4 units, in addition to the trigonal-pyramidal SnO3 units. The connectivity between the SnO3, SnO4, and PO4 units is such that Sn−O−Sn linkages are observed for the first time. The networking creates three-coordinated oxygens in the structure. Crystal data for compound I, [Sn3(PO4)2(OH)]-·0.5[(NH3)(CH2)6(NH3)]+:  monoclinic, a = 9.315(2) Å, b = 16.806(1) Å, c = 9.513(3) Å, β = 111.03(1)°, V = 1390.0(5), Z = 4, M = 622.13(1), Dcalc = 2.973 g cm-3, Mo Kα, RF = 0.039. Crystal data for compound II, [Sn3(PO4)2(OH)]-·0.5[(NH3)(CH2)8(NH3)]+:  orthorhombic, a = 10.390(1) Å, b = 16.087(1) Å, c = 18.717(1) Å, V = 2849.3(1), Z = 4, M = 636.16(1), Dcalc = 2.595 g cm-3, Mo Kα, RF = 0.07.
Description: Restricted Access
Other Identifiers: 0897-4756
Appears in Collections:Research Papers (Prof. C.N.R. Rao)

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