Accession Number : AD0769148

Title :   The Crystal Structure of Methyl Orange Monohydrate Monoethanolate,

Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF BIOLOGICAL SCIENCES

Personal Author(s) : Hanson,Alfred Wallace

Report Date : 18 OCT 1972

Pagination or Media Count : 8

Abstract : Crystals of (sodium 4'-dimethylaminoazobenzene-4-sulphonate monohydrate monoethanolate, C14H14NaN3O3S.H2O.C2H6O) are monoclinic. The crystal structure was determined by symbolic addition procedures and refined by block-diagonal least-squares methods to a final R index of 0.049. The two phenyl rings of the azobenzene nucleus are inclined to each other at 10 degrees. The coordination of the sodium ion is distorted octahedral; two water molecules lie at opposite corners, and the remaining positions are occupied by an oxygen atom from each of three different sulphonate groups and by an ethanol hydroxyl group. The water and ethanol molecules each donate one hydrogen bond, and the sulphonate group accepts two. (Modified author abstract)

Descriptors :   (*Organic nitrogen compounds, *Crystal structure), Molecular structure, Aromatic compounds, Sulfonates, Amines, X ray diffraction, Canada

Subject Categories : Organic Chemistry
      Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE