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

Crystals

Leokadiya Zorina²  Sergey Simonov²  Enric Canadell¹ 

[1] Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, Bellaterra 08193, Spain;Institute of Solid State Physics RAS, Chernogolovka MD 142432, Russia;

关键词: single-crystal-to-single-crystal transformation;    low-dimensional organic conductors;    BEDT-TTF;    photochromic octahedral anion;    single crystal structure;    electronic band structure;   

DOI  :  10.3390/cryst2020627

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.