Porous coordination polymer polymorphs with different flexible pores using a structurally flexible and bent 1,3-bis(4-pyridyl)propane ligand

Katsuo Fukuhara, Shin Ichiro Noro, Kunihisa Sugimoto, Tomoyuki Akutagawa, Kazuya Kubo, Takayoshi Nakamura

    Research output: Contribution to journalArticlepeer-review

    30 Citations (Scopus)

    Abstract

    Porous coordination polymer (PCP) polymorphs with the formula [Cu(CF 3SO3)2(bpp)2]n [1 and 2, where bpp = 1,3-bis(4-pyridyl)propane] have been synthesized and crystallographically characterized, and their distinguishable porous properties have been investigated. 1 was obtained by the removal of guest acetone molecules from one-dimensional PCP {[Cu(CF3SO3)(bpp) 2]·CF3SO3·2acetone}n (1âŠ2acetone), while 2 was derived from two-dimensional PCP {[Cu(CF3SO3)2(bpp)2]·H 2O}n (2âŠH2O) by the loss of guest H2O molecules. The desolvated PCPs 1 and 2 with the same formula [Cu(CF3SO3)2(bpp)2] showed distinguishable structures, suggesting PCP polymorphs. In addition, their adsorption behaviors were completely different: 1 showed adsorption with the structural transformation from closed to open forms, while 2 appeared to expand its framework for only as long as was required for the passage of guest molecules. To the best of our knowledge, PCP polymorphs showing either of two different types of flexible pores are very rare.

    Original languageEnglish
    Pages (from-to)4229-4237
    Number of pages9
    JournalInorganic chemistry
    Volume52
    Issue number8
    DOIs
    Publication statusPublished - 2013 Apr 15

    ASJC Scopus subject areas

    • Physical and Theoretical Chemistry
    • Inorganic Chemistry

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