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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 (CC BY 3.0).

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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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