Intercalation of triethylphosphine oxide bearing a phosphoryl group into Dion-Jacobson-type ion-exchangeable layered perovskites

Nagisa Toihara, Yoriyoshi Yoneyama, Akira Shimada, Seiichi Tahara, Yoshiyuki Sugahara

    研究成果: Article

    7 引用 (Scopus)

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    Triethylphosphine oxide [(C2H5)3PO; TEPO] was intercalated into protonated Dion-Jacobson-type ion-exchangeable layered perovskites, HLaNb2O7·xH2O (HLaNb) and HCa2Nb3O10·xH2O (HCaNb), by hydrolysis of their n-decoxy derivatives (C10O-HLaNb or C10O-HCaNb) in the presence of TEPO. The interlayer distances of the products (TEPO/C10O-HLaNb and TEPO/C10O-HCaNb) were smaller than those of the corresponding n-decoxy derivatives, but still larger than those of anhydrous protonated forms of HLaNb and HCaNb. The solid-state 31P NMR signals of the products observed at 94 ppm (TEPO/C10O-HLaNb) and 93 ppm (TEPO/C10O-HCaNb) exhibited large downfield shifts from that of the physisorbed TEPO. IR spectroscopy also showed decreases in the ν(PO) band wavenumbers upon the reactions. These results clearly indicate that TEPO is intercalated and interacted with Brønsted acid sites, the surface hydroxyl groups generated via hydrolysis of n-decoxy groups. The difference in ν(PO) band wavenumbers as well as that in gallery heights suggests that TEPO exhibited different orientations with respect to the inorganic layers. The chemical shifts of solid-state 31P NMR signals suggested high Brønsted acidity of HLaNb and HCaNb. This journal is

    元の言語English
    ページ(範囲)3002-3008
    ページ数7
    ジャーナルDalton Transactions
    44
    発行部数7
    DOI
    出版物ステータスPublished - 2015 2 21

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    Bearings (structural)
    Intercalation
    Oxides
    Hydrolysis
    Nuclear magnetic resonance
    Ions
    Derivatives
    Chemical shift
    Acidity
    Hydroxyl Radical
    Infrared spectroscopy
    Acids

    ASJC Scopus subject areas

    • Inorganic Chemistry

    これを引用

    Intercalation of triethylphosphine oxide bearing a phosphoryl group into Dion-Jacobson-type ion-exchangeable layered perovskites. / Toihara, Nagisa; Yoneyama, Yoriyoshi; Shimada, Akira; Tahara, Seiichi; Sugahara, Yoshiyuki.

    :: Dalton Transactions, 巻 44, 番号 7, 21.02.2015, p. 3002-3008.

    研究成果: Article

    Toihara, Nagisa ; Yoneyama, Yoriyoshi ; Shimada, Akira ; Tahara, Seiichi ; Sugahara, Yoshiyuki. / Intercalation of triethylphosphine oxide bearing a phosphoryl group into Dion-Jacobson-type ion-exchangeable layered perovskites. :: Dalton Transactions. 2015 ; 巻 44, 番号 7. pp. 3002-3008.
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    abstract = "Triethylphosphine oxide [(C2H5)3PO; TEPO] was intercalated into protonated Dion-Jacobson-type ion-exchangeable layered perovskites, HLaNb2O7·xH2O (HLaNb) and HCa2Nb3O10·xH2O (HCaNb), by hydrolysis of their n-decoxy derivatives (C10O-HLaNb or C10O-HCaNb) in the presence of TEPO. The interlayer distances of the products (TEPO/C10O-HLaNb and TEPO/C10O-HCaNb) were smaller than those of the corresponding n-decoxy derivatives, but still larger than those of anhydrous protonated forms of HLaNb and HCaNb. The solid-state 31P NMR signals of the products observed at 94 ppm (TEPO/C10O-HLaNb) and 93 ppm (TEPO/C10O-HCaNb) exhibited large downfield shifts from that of the physisorbed TEPO. IR spectroscopy also showed decreases in the ν(PO) band wavenumbers upon the reactions. These results clearly indicate that TEPO is intercalated and interacted with Br{\o}nsted acid sites, the surface hydroxyl groups generated via hydrolysis of n-decoxy groups. The difference in ν(PO) band wavenumbers as well as that in gallery heights suggests that TEPO exhibited different orientations with respect to the inorganic layers. The chemical shifts of solid-state 31P NMR signals suggested high Br{\o}nsted acidity of HLaNb and HCaNb. This journal is",
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    T1 - Intercalation of triethylphosphine oxide bearing a phosphoryl group into Dion-Jacobson-type ion-exchangeable layered perovskites

    AU - Toihara, Nagisa

    AU - Yoneyama, Yoriyoshi

    AU - Shimada, Akira

    AU - Tahara, Seiichi

    AU - Sugahara, Yoshiyuki

    PY - 2015/2/21

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    N2 - Triethylphosphine oxide [(C2H5)3PO; TEPO] was intercalated into protonated Dion-Jacobson-type ion-exchangeable layered perovskites, HLaNb2O7·xH2O (HLaNb) and HCa2Nb3O10·xH2O (HCaNb), by hydrolysis of their n-decoxy derivatives (C10O-HLaNb or C10O-HCaNb) in the presence of TEPO. The interlayer distances of the products (TEPO/C10O-HLaNb and TEPO/C10O-HCaNb) were smaller than those of the corresponding n-decoxy derivatives, but still larger than those of anhydrous protonated forms of HLaNb and HCaNb. The solid-state 31P NMR signals of the products observed at 94 ppm (TEPO/C10O-HLaNb) and 93 ppm (TEPO/C10O-HCaNb) exhibited large downfield shifts from that of the physisorbed TEPO. IR spectroscopy also showed decreases in the ν(PO) band wavenumbers upon the reactions. These results clearly indicate that TEPO is intercalated and interacted with Brønsted acid sites, the surface hydroxyl groups generated via hydrolysis of n-decoxy groups. The difference in ν(PO) band wavenumbers as well as that in gallery heights suggests that TEPO exhibited different orientations with respect to the inorganic layers. The chemical shifts of solid-state 31P NMR signals suggested high Brønsted acidity of HLaNb and HCaNb. This journal is

    AB - Triethylphosphine oxide [(C2H5)3PO; TEPO] was intercalated into protonated Dion-Jacobson-type ion-exchangeable layered perovskites, HLaNb2O7·xH2O (HLaNb) and HCa2Nb3O10·xH2O (HCaNb), by hydrolysis of their n-decoxy derivatives (C10O-HLaNb or C10O-HCaNb) in the presence of TEPO. The interlayer distances of the products (TEPO/C10O-HLaNb and TEPO/C10O-HCaNb) were smaller than those of the corresponding n-decoxy derivatives, but still larger than those of anhydrous protonated forms of HLaNb and HCaNb. The solid-state 31P NMR signals of the products observed at 94 ppm (TEPO/C10O-HLaNb) and 93 ppm (TEPO/C10O-HCaNb) exhibited large downfield shifts from that of the physisorbed TEPO. IR spectroscopy also showed decreases in the ν(PO) band wavenumbers upon the reactions. These results clearly indicate that TEPO is intercalated and interacted with Brønsted acid sites, the surface hydroxyl groups generated via hydrolysis of n-decoxy groups. The difference in ν(PO) band wavenumbers as well as that in gallery heights suggests that TEPO exhibited different orientations with respect to the inorganic layers. The chemical shifts of solid-state 31P NMR signals suggested high Brønsted acidity of HLaNb and HCaNb. This journal is

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