An Inorganic Double Helix: Hydrothermal Synthesis, Structure, and Magnetism of Chiral [(CH <sub>3</sub> ) <sub>2</sub> NH <sub>2</sub> ]K <sub>4</sub> [V <sub>10</sub> O <sub>10</sub> (H <sub>2</sub> O) <sub>2</sub> (OH) <sub>4</sub> (PO <sub>4</sub> ) <sub>7</sub> ]·4H <sub>2</sub> O

DOI Web Site 被引用文献7件
  • Victoria Soghomonian
    NEC Research Institute, 4 Independence Way, Princeton, NJ 08540, and Department of Chemistry, Syracuse University, Syracuse, NY 13244
  • Qin Chen
    Department of Chemistry, Syracuse University, Syracuse, NY 13244
  • Robert C. Haushalter
    NEC Research Institute, 4 Independence Way, Princeton, NJ 08540
  • Jon Zubieta
    Department of Chemistry, Syracuse University, Syracuse, NY 13244
  • Charles J. O'Connor
    Department of Chemistry, University of New Orleans, New Orleans, LA 70148

抄録

<jats:p> Very complicated inorganic solids can be self-assembled from structurally simple precursors as illustrated by the hydrothermal synthesis of the vanadium phosphate, [(CH <jats:sub>3</jats:sub> ) <jats:sub>2</jats:sub> NH <jats:sub>2</jats:sub> ]K <jats:sub>4</jats:sub> [V <jats:sub>10</jats:sub> O <jats:sub>10</jats:sub> (H <jats:sub>2</jats:sub> O) <jats:sub>2</jats:sub> (OH) <jats:sub>4</jats:sub> (PO <jats:sub>4</jats:sub> ) <jats:sub>7</jats:sub> ]⋅4H <jats:sub>2</jats:sub> O, 1, which contains chiral double helices formed from interpenetrating spirals of vanadium oxo pentamers bonded together by P <jats:sup>5+</jats:sup> . These double helices are in turn intertwined with each other in a manner that generates unusual tunnels and cavities that are filled with (CH <jats:sub>3</jats:sub> ) <jats:sub>2</jats:sub> NH <jats:sub>2</jats:sub> <jats:sup>+</jats:sup> and K <jats:sup>+</jats:sup> cations, respectively. The unit cell contents of dark blue phosphate 1, which crystallizes in the enantiomorphic space group <jats:italic>P</jats:italic> 4 <jats:sub>3</jats:sub> with lattice constants <jats:italic>a</jats:italic> = 12.130 and <jats:italic>c</jats:italic> = 30.555 angstroms, are chiral; only one enantiomorph is present in a given crystal. Magnetization measurements show that 1 is paramagnetic with ten unpaired electrons per formula unit at higher temperatures and that antiferromagnetic interactions develop at lower temperatures. </jats:p>

収録刊行物

  • Science

    Science 259 (5101), 1596-1599, 1993-03-12

    American Association for the Advancement of Science (AAAS)

被引用文献 (7)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ