Accession Number : AD0699023

Title :   THE CRYSTAL STRUCTURE OF IODININ,

Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF PURE PHYSICS

Personal Author(s) : Hanson,A. W. ; Huml,K.

Report Date : 03 OCT 1968

Pagination or Media Count : 10

Abstract : A crystal-structure analysis of iodinin, 1,6-phenazine diol-5,10-dioxide C12H8N2O4, was carried out at --160C and at room temperature. The crystals are monoclinic, space group P2(1)/a, with (at -- 160C) a=15.634, b=5.028, c=6.037 A, beta=91.00 deg., Z=2. The structure was determined entirely by symbolic-addition methods and refined by block-diagonal least-squares to a final R index of 0.060. The structure consists of endless ribbons of nearly coplanar molecules, extended in the directions (011). Adjacent molecules in a ribbon are linked by the intermolecular branches of bifurcated hydrogen bonds. The binding force is sufficient to cause a non-bonded oxygen-oxygen contact of 2.591 A. (Author)

Descriptors :   (*PHENOLS, *CRYSTAL STRUCTURE), MOLECULAR ASSOCIATION, NITROGEN HETEROCYCLIC COMPOUNDS, X RAY DIFFRACTION, CANADA

Subject Categories : Crystallography
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE