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    Öğe
    Photochemical reactions of [M(CO)5THF] (M: Cr, Mo and W) with tetradentate Schiff-bases
    (Taylor & Francis Inc, 2008) Karahan, Senem; Koese, Pelin; Subasi, Elif; Temel, Hamdi
    The new complexes, [(mu-CO)(2)Cr-2(eta(4)-H2L)(2)], 1; [(mu-CO)M-2(CO)(2)(eta(4)- H2L)(2)], [M=Mo; 2, W; 3]; [(mu-CO)(2)Cr-2(eta(4)-H2L')(2)], 4 and [(mu-CO)M-2(CO)(2)(eta(4)-H2L')(2)], [M=Mo; 5, W; 6] have been synthesized by the photochemical reactions of photogenerated intermediate, M(CO)(5)THF (M=Cr, Mo, W) with two oxygen and nitrogen donor Schiff base ligands, N,N'-bis(2-hydroxynaphtalin-1-carbaldehydene)-1,2-bis(p-aminophenoxy)ethane (H2L) and N,N'-bis(2-hydroxynaphtalin-1-carbaldehydene)-1,4-bis(p-aminophenoxy)butane (H2L'). The complexes have been characterized by elemental analyses, LC-mass spectrometry, magnetic studies, FTIR and H-1-NMR spectroscopy. The spectroscopic studies show that H2L and H2L' ligands are coordinated to the central metal as tetradentate ligands coordinating via their imine N and O donor atoms in (1-6).
  • [ X ]
    Öğe
    Photochemical reactions of [M(CO)5THF] (M: Cr, Mo, and W) with tetradentate Schiff-bases
    (Taylor & Francis Inc, 2008) Karahan, Senem; Kose, Pelin; Subasi, Elif; Temel, Hamdi
    The new complexes, [(mu-CO)(2)Cr-2(4-H2L)(2)], 1; [(mu-CO)M-2(CO)(2)(eta(4)-H2L)(2)], [M = Mo; 2, W; 3]; [(mu-CO)(2)Cr-2(eta(4)-H2L')(2)], 4, and [(mu-CO)M-2(CO)(2)(eta(4)-H2L')(2)], [M = Mo; 5, W; 6] have been synthesized by the photochemical reactions of photogenerated intermediate, M(CO)(5)THF (M = Cr, Mo, W) with two oxygen and nitrogen donor Schiff base ligands, N,N'-bis(2-hydroxynaphtalin-1-carbaldehydene)-1,2-bis(p-aminophenoxy)ethane (H2L) and N,N'-bis(2-hydroxynaphtalin-1-carbalde-hydene)-1,4-bis(p-aminophenoxy)butane (H2L'). The complexes have been characterized by elemental analyses, LC-mass spectrometry, magnetic studies, FTIR, and H-1-NMR spectroscopy. The spectroscopic studies show that H2L and H2L' ligands are coordinated to the central metal as tetradentate ligands coordinating via their imine N and O donor atoms in (1-6).
  • [ X ]
    Öğe
    Photochemical reactions of M(CO)5THF (M = Cr, Mo, W) with thio Schiff bases
    (Springer, 2008) Karahan, Senem; Kose, Pelin; Subasi, Elif; Alp, Huseyin; Temel, Hamdi
    The hitherto unknown complexes, [M-2(CO)(6)-(mu-CO)(mu-L)], [M = Cr; 1, Mo; 2, W; 3] and [M-2(CO)(6)-(mu-CO)(mu-L ')], [M = Cr; 4, Mo; 5, W; 6] have been synthesized by the photochemical reactions of photogenerated intermediate, M(CO)(5)THF (M = Cr, Mo, W) with thio Schiff base ligands, N,N '-bis(2-aminothiophenol)-1,4-bis(2-carboxaldehydephenoxy)butane (H2L) and N,N '-bis(2-aminothiophenol)- 1,7-bis(2-formylphenyl)-1,4,7-trioxaheptane (H2L '). The complexes have been characterized by elemental analysis, LC-mass spectrometry, magnetic studies, FT-IR and H-1 NMR spectroscopy. The spectroscopic studies show that H2L and H2L ' ligands are converted to benzothiazole derivatives, L and L ' after UV irradiation and coordinated to the central metal as bridging ligands via the central azomethine nitrogen and sulphur atoms in 1-6.