Self-templating of large rings by small rings in 4,4 '-bipyridyl-3,4-dihydroxy-3-cyclobutene-1,2-dione (2/3)

E J MacLean, P S Wheatley, G Ferguson, C Glidewell

Research output: Contribution to journalArticlepeer-review

Abstract

The title compound is a salt, bis(4,4'-bipyridyl-4,4'-diium) bis[3,4-dihydroxy-3-cyclobutene-1,2-dionate(1 -)] 3,4-dihydroxy-3-cyclobutene-1,2-dionate( 2C(10)H(10)-N-2(2+) . 2C(4)HO(4)(-). C4O42-. The cations and the (C4O4)(2-) anions are linked by two types of short N-H ... O hydrogen bond [N ... O 2.595(2) and 2.622(2) Angstrom; N-H ... O 167 and 170 degrees] to form a planar rectangular net built from a single type of centrosymmetric R-8(6)(56) ring. The (C4HO4)(-) anions are linked by paired short O-H ... O hydrogen bonds [O ... O 2.471(2)Angstrom and O-H ... O 152 degrees] into centrosymmetric dimers containing an R-2(2)(10) motif. A [(C4HO4)(-)](2) dimer lies at the centre of each R-8(6)(56) ring, and is linked to it by two C-H ... O hydrogen bonds [C ... O 3.318(3) and 3.165 (3) Angstrom; C-H ... O 155 and 151 degrees].

Original languageEnglish
Pages (from-to)1892-1896
Number of pages5
JournalActa Crystallographica Section C: Crystal Structure Communications
Volume55
Issue number11
DOIs
Publication statusPublished - 15 Nov 1999

Keywords

  • CENTER-DOT-O
  • CRYSTAL

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