- Binuclear molybdenum(V)porphyrins bridged by benzenediolate or naphthalenediolate dianion: Cooperative coordination equilibrium of two molybdenum centers involving electron transfer
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The reactions of molybdenumporphyrin and an aromatic diol were studied. A cooperative coordination of two hydroxyl groups to molybdenum centers was confirmed.
- Kurihara, Masato,Saito, Ikuko,Matsuda, Yoshihisa
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- Calix(n)arene-quinone interactions: Molecular recognition of 2,6-naphthoquinone by 5,11,17,23,29,35-hexa-tert-butyl-37,38,39,40,41,42-hexahydroxycalix(6)arene
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UV, IR and NMR spectral analyses reveal that 2,6-naphthoquinone forms a 1:1 host-guest type of complex with 5,11,17,23,29,35-hexa-tert-butyl-37,38,39,40,41,42-hexahydroxycalix(6)arene while 1,4-naphthoquinone does not do so at low concentrations (1 × 10s
- Mohindra Chawla,Srinivas,Meena
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p. 2709 - 2718
(2007/10/02)
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- Molecular recognition of 2,6-naphthoquinone by 5,11,17,23,29,35-hexa-tert-butyl-37,38,39,40,41,42-hexahydroxycalix(6)arene
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UV, IR and 1H NMR spectral analyses of host-guest complexation of 2,6-naphthoquinone (3) and 5,11,17,23,29,35-hexa-tert-butyl-37,38,39,40,41,42-hexahydroxycalix(6)arene (1c) reveals that the former can be recognised by the latter at low concentrations (5*10-4 M - 3.72*10-3 M).
- Chawla, H. Mohindra,Srinivas, K.
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p. 230 - 233
(2007/10/02)
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- Methylene blue sensitized photooxygenation of 2-aminonaphthalene
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Methylene blue sensitized photooxygenation of 1-hydroxy-, 2-hydroxy, 1-amino- and 2-amino-naphthalenes has been investigated. 1-Hydroxynaphthalene yields 1,4-naphthoquinone exclusively while 2-hydroxynaphthalene and 1-aminonaphthalene do not yield tangible products in appreciable yields. 2-Aminonaphthalene gives 2,6-naphthoquinone as the major product rather than the formation of an unsaturated tetraaldehyde (1) as reported earlier .A plausible mechanism involving the intermediacy of hydroperoxides has been suggested.
- Chawla, H M,Kaul, Kamini,Meena
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p. 733 - 737
(2007/10/02)
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