Synthesis and Crystal Structures of Copper(II) Diphosphonatoalkanes: C4 and C5
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Two copper alkylenediphosphonates, Cu2[(O3PC4H8PO3) (H2O)2] 2H2O (1) and Cu2[(O3-PC5H10PO3) (H2O)2]2.8H2O (2), have been synthesized and their crystal structures solved from X-ray powder data. Compound 1 is monoclinic, C2/m, with a = 20.035(6), b = 6.6713-(2), and c = 4.3966(1) , = 91.379(1), and Z = 2. Compound 2 is orthorhombic, Pmmn, with a = 22.3773(2), b = 6.7633(1), and c = 4.3529(1) , and Z = 2. Both structures consist of layers of CuO4(OH2)2 octahedra in which the layers are cross-linked by the alkyl chains into three-dimensional lattices. This pillared arrangement creates tunnels running parallel to the c-axis direction containing water molecules. Dehydration of the compounds is irreversible, but in the hydrated state, ammonia readily replaces the water.
author list (cited authors)
Arnold, D. I., Ouyang, X., & Clearfield, A.
complete list of authors
Arnold, Deirdre I||Ouyang, Xiang||Clearfield, Abraham