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The first copper complexes bearing the 1,3,5-triaza-7-phosphaadamantane (PTA) ligand.
Autorzy
Rok wydania
2007
Czasopismo
European Journal of Inorganic Chemistry
Strony
2686-2692
DOI
10.1002/ejic.200601152
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The CuI compound [Cu(PTAH)4](NO3)5 (1) {PTAH = N-protonated form of 1,3,5-triaza-7-phosphaadamantane (PTA)} was easily prepared by reacting hydrated Cu(NO3)2 and PTA in aqueous acidic solution at room temperature. Further treatment of 1 with sodium hydroxide in water led to an unprotonated PTA derivative [Cu(PTA)4](NO3) (2). Both compounds are water-soluble and air-stable, and were characterized by IR, 1H-, 13C{1H}-, 31P{1H}- and 63Cu NMR spectroscopy, FAB-MS(+), elemental and single-crystal X-ray diffraction structural analyses. They exhibit a nearly regular tetrahedral coordination environment about each copper centre filled by the phosphorus atoms of the four PTAH/PTA moieties, which show distinct and unusual geometrical arrangements if viewed along the P–Cu bonds. The 31P{1H}- and 63Cu NMR spectra of 2 in D2O solution show spin coupling between the 31P and 63Cu nuclei at room temperature. These compounds represent the first examples of Cu complexes bearing PTA or any derived ligand with a cagelike PTA core and expand the restricted family of aqua-soluble copper phosphane complexes.
Adres publiczny
https://doi.org/10.1002/ejic.200601152
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