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Crystals 2012, 2(2), 627-642; doi:10.3390/cryst2020627
Article

Single-Crystal-to-Single-Crystal Transformation from δ-(BEDT-TTF)4[OsNOCl5]1.33(C6H5NO2)0.67 to β"-(BEDT-TTF)3[OsNOCl5]

1,* , 1
,
2
 and
1
1 Institute of Solid State Physics RAS, Chernogolovka MD 142432, Russia 2 Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, Bellaterra 08193, Spain
* Author to whom correspondence should be addressed.
Received: 16 March 2012 / Revised: 15 May 2012 / Accepted: 15 May 2012 / Published: 7 June 2012
(This article belongs to the Special Issue Molecular Conductors)
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Abstract

We report on the single-crystal-to-single-crystal transformation occurring over time in a layered organic molecular conductor based on BEDT-TTF. The process is connected with removal of solvent molecules from the complex anion layer resulting in concomitant partial irreversible conversion of the δ-(BEDT-TTF)4[OsNOCl5]1.33(C6H5NO2)0.67 structure to the β"-(BEDT-TTF)3[OsNOCl5] structure. Along with symmetry lowering from I2/a to Р, huge, drastic changes in the conducting BEDT-TTF layer as well as in the anion arrangement are observed, meanwhile crystallinity of the sample is retained. Coexistence of two phases, parent δ and daughter β" in the same crystal helps in the study of their mutual orientation as well as to formulate a mechanism for the structural transformation.
Keywords: single-crystal-to-single-crystal transformation; low-dimensional organic conductors; BEDT-TTF; photochromic octahedral anion; single crystal structure; electronic band structure single-crystal-to-single-crystal transformation; low-dimensional organic conductors; BEDT-TTF; photochromic octahedral anion; single crystal structure; electronic band structure
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Zorina, L.; Simonov, S.; Canadell, E.; Shibaeva, R. Single-Crystal-to-Single-Crystal Transformation from δ-(BEDT-TTF)4[OsNOCl5]1.33(C6H5NO2)0.67 to β"-(BEDT-TTF)3[OsNOCl5]. Crystals 2012, 2, 627-642.

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