Polymeric methylenebis(diphenylphosphine oxide) hydrogen triiodide

The conformation of the cationic part of the title compound, [{(C6H5)2POH0.5}2CH2]I3 or dppmO2H+·I3− (dppm is di­phenyl­phosphino­methane), is determined by hydrogen bonds between cations of monoprotonated [(C6H5)2P(=O)]2CH2 (dppmO2). Symmetric P=O⋯H⋯O=P bridging, with H atoms lying on centres of in...

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Bibliographic Details
Published in:Acta crystallographica. Section C, Crystal structure communications Crystal structure communications, 2002-06, Vol.58 (6), p.o318-o320
Main Authors: Boraei, Ahmed A., Du Mont, Wolf-W., Ruthe, Frank, Jones, Peter G.
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Organic compounds
Organometalloidal and organometallic compounds
Physics
Structure of solids and liquids
crystallography
Structure of specific crystalline solids
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Summary:The conformation of the cationic part of the title compound, [{(C6H5)2POH0.5}2CH2]I3 or dppmO2H+·I3− (dppm is di­phenyl­phosphino­methane), is determined by hydrogen bonds between cations of monoprotonated [(C6H5)2P(=O)]2CH2 (dppmO2). Symmetric P=O⋯H⋯O=P bridging, with H atoms lying on centres of inversion, leads to chain‐like polymeric cations, (dppmO2H+)x, made up of H⋯OP(C6H5)2—CH2—(C6H5)2PO⋯ moieties. These are, in turn, cross‐connected by non‐classical C—H⋯I contacts between the (dppmO2H+)x methyl­ene‐group H atoms and the terminal I atoms of the triiodide anions, which display crystallographic inversion symmetry.
ISSN:0108-2701
1600-5759
DOI:10.1107/S0108270102005930