electronic reprint Acta Crystallographica Section B Structural Science ISSN 0108-7681 The structure of orange HgI 2 . I. Polytypic layer structure Marc Hostettler, Henrik Birkedal and Dieter Schwarzenbach Copyright © International Union of Crystallography Author(s) of this paper may load this reprint on their own web site provided that this cover page is retained. Republication of this article or its storage in electronic databases or the like is not permitted without prior permission in writing from the IUCr. Acta Cryst. (2002). B58, 903–913 Marc Hostettler et al. Orange HgI 2 : polytypic structure