Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 4 (April 2013)

organic compounds

qk2050 scheme

Acta Cryst. (2013). E69, o530    [ doi:10.1107/S1600536813005229 ]

(2E,5E)-2,5-Bis(4-hydroxy-3-methoxybenzylidene)cyclopentanone ethanol monosolvate

M. Da'i, A. Yanuar, E. Meiyanto, U. A. Jenie and A. M. Supardjan

Abstract: In the title structure, C21H20O5·C2H5OH, the curcumine-type molecule has a double E conformation for the two benzylidene double bonds [C=C = 1.342 (4) and 1.349 (4) Å] and is nearly planar with respect to the non-H atoms (r.m.s. deviation from planarity = 0.069 Å). The two phenolic OH groups form bifurcated hydrogen bonds with intramolecular branches to adjacent methoxy O atoms and intermolecular branches to either a neighbouring molecule or an ethanol solvent molecule. The ethanol O atom donates a hydrogen bond to the keto O atom. These hydrogen bonds link the constituents into layers parallel to (101) in the crystal structure.

htmldisplay filedownload file

Hyper-Text Markup Language (HTML) file
[ doi:10.1107/S1600536813005229/qk2050sup0.html ]
Supplementary materials

moldisplay filedownload file

MDL mol file (5.5 kbytes)
[ doi:10.1107/S1600536813005229/qk2050Isup3.mol ]
Supplementary material

cmldisplay filedownload file

Chemical Markup Language (CML) file (8.1 kbytes)
[ doi:10.1107/S1600536813005229/qk2050Isup4.cml ]
Supplementary material


To open or display or play some files, you may need to set your browser up to use the appropriate software. See the full list of file types for an explanation of the different file types and their related mime types and, where available links to sites from where the appropriate software may be obtained.

The download button will force most browsers to prompt for a file name to store the data on your hard disk.

Where possible, images are represented by thumbnails.

 bibliographic record in  format

  Find reference:   Volume   Page   
  Search:     From   to      Advanced search

Copyright © International Union of Crystallography
IUCr Webmaster