Journal
CRYSTAL GROWTH & DESIGN
Volume 8, Issue 8, Pages 2824-2833Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cg7011149
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A new in situ low-temperature, low-pressure hydrothermal condensation reaction of amino diphosphonic acids affords a series of phosphonate derivatives with bicyclic structures. By using such bicyclic phosphonate ligands, three compounds, namely, [Zn-2(L-1)(phen)(4)]center dot 12H(2)O (1), [Ni(Im)(6)](3)(L-2)(2)(ImH)(2)center dot 24H(2)O (2), and [Cu-2(L-3)(phen)(2)(H2O)(2)]center dot 9H(2)O (3) (phen = 1,10-phenanthroline, Im = imidazole, L1H4, L2H4, and L3H4 represent different bicyclic phosphonate derivatives), have been synthesized and structurally characterized by single-crystal X-ray crystallography. Novel water clusters with different structural motifs, such as T4(3)5(0)A0 water tape in 1, TU water tape in 2, and L5(4)5(5)15(14) water layer in 3, are discussed in detail. The coordination mode of the metal ion and the use of the appropriate second ligand, which would influence the reaction and structures of the final products are also discussed.
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