Back to articles
General Papers
Volume: 40 | Article ID: art00007
Image
The Molecular Structure of [bis-(2-Tribromomethylsulfonyl-benzothiazole)-silver(I)-tetrafluoroborate·(acetone)] [Ag{(C7H4NS)SO2CBr3}2BF4·Me2CO]: A Possible Model For Bromine Elimination of Silver Halide Fog Centers
  DOI :  10.2352/J.ImagingSci.Technol.1996.40.2.art00007  Published OnlineMarch 1996
Abstract

The crystal and molecular structure of [bis-(2-tribromomethylsulfonyl-benzothiazole)-silver(I)-tetrafluoro-borate·(acetone)] solvate, [Ag{(C7H4NS)SO2CBr3}2BF4·Me2CO], has been determined by single crystal x-ray analysis. The space group is P21/c, a = 16.985(5) Å, b = 10.426(3) Å, c = 19.693(4) Å, β = 111.78(2)°, V = 3238 Å3. Chelation by the 2-tribromomethyl-sulfonyl) benzothiazole ligand occurs through the ring nitrogen and sulfone oxygen, resulting in a distorted tetrahedral configuration around the silver atom. This complex is proposed as part of an alternative model for fog center removal in silver halide photographic constructions, in contrast to the theory of bromine radical formation from tribromomethyl compounds. Compounds containing tribromomethyl groups, which also possess sites capable of coordinating with a silver halide surface, may act as ligands to position the bromine on the silver halide surface. This placement of the bromine near the fog centers is suggested as a route to enhance the efficiency of this class of compounds as antifoggants.

Subject Areas :
Views 16
Downloads 1
 articleview.views 16
 articleview.downloads 1
  Cite this article 

John T. Blair, Ranjan C. Patel, Robin D. Rogers, David R. Whitcomb, "The Molecular Structure of [bis-(2-Tribromomethylsulfonyl-benzothiazole)-silver(I)-tetrafluoroborate·(acetone)] [Ag{(C7H4NS)SO2CBr3}2BF4·Me2CO]: A Possible Model For Bromine Elimination of Silver Halide Fog Centersin Journal of Imaging Science and Technology,  1996,  pp 117 - 122,  https://doi.org/10.2352/J.ImagingSci.Technol.1996.40.2.art00007

 Copy citation
  Copyright statement 
Copyright © Society for Imaging Science and Technology 1996
  Login or subscribe to view the content