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Hydrogen bis[tris(4-fluorophenyl)phosphane oxide] triiodide.
- Source :
-
Acta Crystallographica: Section C (Wiley-Blackwell) . Jun2012, Vol. 68 Issue 6, po216-o219. 4p. - Publication Year :
- 2012
-
Abstract
- In the title compound, C36H25F6O2P2+·I3−, hydrogen-bonded [{( p-FC6H4)3PO}2H]+ dimers assemble along the crystallographic c axis to form channels that house extended chains of triiodide anions. Although the I-I bond lengths of 2.9452 (14) and 2.9023 (15) Å are typical, the inter-ion I...I distance of 3.5774 (10) Å is unusually short. A posteriori modelling of nonmerohedral twinning about (100) has been only partially successful, achieving a reduction in the maximum residual electron density from 5.28 to 3.24 e Å−3. The inclusion of two low-occupancy I-atom sites (total 1.7%), which can be interpreted as translational disorder of the triiodide anions along the channels, reduced the maximum residual electron density to 2.03 e Å−3. The minor fractional contribution volume of the nonmerohedral twin domains refined to 0.24 and simultaneous refinement of the inversion twin domains showed the crystal to be a 0.5:0.5 inversion twin. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01082701
- Volume :
- 68
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Acta Crystallographica: Section C (Wiley-Blackwell)
- Publication Type :
- Academic Journal
- Accession number :
- 76348976
- Full Text :
- https://doi.org/10.1107/S0108270112020112