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

    Research output: Contribution to journalArticle

    7 Citations (Scopus)

    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 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

    Original languageEnglish
    Pages (from-to)3002-3008
    Number of pages7
    JournalDalton Transactions
    Volume44
    Issue number7
    DOIs
    Publication statusPublished - 2015 Feb 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

    Cite this

    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.

    In: Dalton Transactions, Vol. 44, No. 7, 21.02.2015, p. 3002-3008.

    Research output: Contribution to journalArticle

    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. In: Dalton Transactions. 2015 ; Vol. 44, No. 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

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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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