Premium
γ‐HIO 3 – a Metastable, Centrosymmetric Polymorph of Iodic Acid
Author(s) -
Fischer Andreas,
Lindsjö Martin
Publication year - 2005
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200500099
Subject(s) - orthorhombic crystal system , hydrogen bond , crystallography , metastability , raman spectroscopy , crystal structure , ammonium perchlorate , diffraction , crystal (programming language) , group (periodic table) , materials science , chemistry , molecule , thermal decomposition , optics , physics , organic chemistry , programming language , computer science
From solutions of chromium(III) perchlorate and periodic acid, single crystals of γ‐HIO 3 were obtained and characterized by single‐crystal X‐ray diffraction, Raman spectroscopy and thermal analysis. The compound crystallizes in the orthorhombic crystal system, space group Pbca ( a = 563.92, b = 611.10, c = 1507.16 pm). The structure is built up by dimers (HIO 3 ) 2 , which are formed by hydrogen bonds. The crystals are metastable and transform into the stable modification, α‐HIO 3 , within a couple of weeks.