Journal
CRYSTAL GROWTH & DESIGN
Volume 9, Issue 7, Pages 3006-3010Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cg900334w
Keywords
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Funding
- Foundation for Science and Technology (FCT), Portugal
- FEDER
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The aqueous medium self-assembly reactions of copper(II) nitrate with 1,3,5-triaza-7-phosphaadamantane (PTA) as a main ligand and sodium azide or iodide as an auxiliary ligand lead to the new water-soluble Cu(I) coordination polymer [Cu(mu-N-3)(mu-PTA)](n) (1) and monomer [CuI(PTA)(PTAH)(2)]I-2 center dot H2O (2) (PTAH = N-protonated form of PTA), with the PTA cages exhibiting the rare P,N- or the conventional P-coordination mode, respectively. Another hydrosoluble P-bound PTA derivative [Cu(PTA)(4)](NO3)center dot 6H(2)O (3) is furnished in the absence of any auxiliary ligand. The compounds have been characterized by IR and NMR spectroscopy, elemental and single crystal X-ray diffraction analyses which feature the formation of a unique one-dimensional (ID) coordination network in 1 composed of the [Cu-2(mu-N-3)(2)] cores and PTA spacers, as well as 1D (in 2) and three-dimensional (3D) (in 3) supramolecular structures built from multiple N-H center dot center dot center dot N (PTAH/PTA) and O-H center dot center dot center dot N (H2O/PTA) H-bonds, respectively. The study broadens the still limited use of PTA as a spacer or building block for crystal engineering of metal-organic coordination and supramolecular networks, their nature being also dependent on the type of auxiliary ligand. Compound 1 represents the first example of a copper coordination polymer with PTA.
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