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Unprecedented mixed-valence Cu(I)/Cu(II) complex derived from N-methyl-1,3,5-triaza-7-phosphaadamantane; synthesis, structural features, and magnetic properties.
Autorzy
Rok wydania
2012
Czasopismo
Numer woluminu
31
Strony
7921-7925
DOI
10.1021/om3005564
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The unique mixed-valence tetracopper(I/II) complex [Cu4I4(μ-N3)2(N3)4(μ-PTA-Me)2(PTA-Me)2]·2H2O (1), composed of the hexaazido dicopper(II) core {Cu2(μ-N3)2(N3)4}2– and two copper(I) {CuI2(μ-PTA-Me)(PTA-Me)}+ units, has been easily generated by self-assembly in water from copper(II) nitrate, N-methyl-1,3,5-triaza-7-phosphaadamantane iodide, [PTA-Me]I, and sodium azide. It has been characterized by IR, 1H and 31P{H} NMR, and EPR spectroscopies and elemental and single-crystal X-ray diffraction analyses. Apart from representing the first mixed-valence metal compound bearing PTA or any cage-like aminophosphine derivative, 1 also discloses a rare P,N-coordination mode of PTA-Me ligands, which act, for the first time, as spacers between the Cu(I) and Cu(II) centers. Magnetic susceptibility and EPR studies reveal a ferromagnetic interaction (2J = +17.1 cm–1) between the Cu(II) atoms through μ-1,1-azido ligands.
Adres publiczny
https://doi.org/10.1021/om3005564
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