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3-(4-Hy-droxy-3-meth-oxy-phen-yl)acrylic acid-2,3,5,6-tetra-methyl-pyrazine (2/1).

Authors
  • Tan, Zaiyou1
  • Zhu, Erjia
  • Luo, Lin
  • Lin, Zhuohui
  • Yan, Ruisi
  • 1 Department of Physical Chemistry, Guangdong Pharmaceutical University, Guangzhou, Guangdong 510006, People's Republic of China. , (China)
Type
Published Article
Journal
Acta Crystallographica Section E Structure Reports Online
Publisher
International Union of Crystallography
Publication Date
Jan 15, 2011
Volume
67
Issue
Pt 2
Identifiers
DOI: 10.1107/S1600536811000961
PMID: 21523092
Source
Medline
License
Unknown

Abstract

The asymmetric unit of the title compound, C(8)H(12)N(2)·2C(10)H(10)O(4), contains a tetra-methyl-pyrazine mol-ecule, situated about an inversion center, and two substituted acrylic acid derivatives. The dihedral angle between the phenyl and pyrazine rings is 69.45 (9)°. In the crystal, inter-molecular O-H⋯O, O-H⋯N hydrogen bonds and weak C-H⋯O inter-actions lead to the formation of a supra-molecular network. The acrylic acid side chain is positionally disordered [occupancy ratio 0.852 (7):0.148 (7)].

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