• Crystal structures of two thiacalix[4]arene derivatives anchoring four thiadiazole groups

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      https://www.ias.ac.in/article/fulltext/jcsc/121/06/1047-1052

    • Keywords

       

      Thiacalixarene; thiadiazole; crystal structure; weak interaction.

    • Abstract

       

      The crystal structures of two thiacalixarene derivatives anchoring thiadiazole functional groups at lower rim, C60H72O4S12N8 (1), C64H80O4S12N8 (2), have been determined by single crystal X-ray diffraction. The thiacalix[4]arene framework in both 1 and 2 adopts the 1,3-alternate conformation. Compound 1 forms a 1-D chain by weak hydrogen bonding (C-H$\cdots$N) interactions between two thiadiazole groups in two different molecules. The chains are further connected to form a 2-D network through sulfur-sulfur (S$\cdots$S) interactions. The lattice water molecules which exist as dimers by forming hydrogen bonds (O-H$\cdots$O) promote a 3-D supramolecular structure through weak hydrogen bonding (O-H$\cdots$S) interactions between the lattice water dimers and the 2-D networks. On the other hand, compound 2, based on dimer which is formed by weak hydrogen bonding (C-H$\cdots$S) interactions, is extended to a 1-D chain through sulfur-sulfur (S$\cdots$S) interactions. The dimers of lattice methanol molecules linked by hydrogen bonds (O-H$\cdots$O) act as bridges to link the 1-D chains into a 2-D network through weak hydrogen bonding (C-H$\cdots$N) interactions.

    • Author Affiliations

       

      Bang-Tun Zhao1 2 Zhen Zhou2 Zhen-Ning Yan2

      1. Department of Chemistry, Luoyang Normal University, Luoyang 471022, PR China
      2. Department of Chemistry, Zhengzhou University, Zhengzhou 450001, PR China
    • Dates

       
  • Journal of Chemical Sciences | News

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