scholarly journals Phase transition effects: A crystallographic characterization of the temperature dependency of the crystal structure of the 1:1 charge transfer complex between anthracene and tetracyanobenzene in the temperature range 297 to 119 K

1980 ◽  
Vol 73 (1) ◽  
pp. 538-547 ◽  
Author(s):  
John J. Stezowski
Keyword(s):  
Crystal Structure ◽  
Phase Transition ◽  
Charge Transfer ◽  
Charge Transfer Complex ◽  
Temperature Dependency ◽  
Temperature Range ◽  
Transition Effects

Synthesis and characterization of a new pyrazine functionalized TTF derivative and crystal structure of its charge-transfer complex with iodine

Polyhedron ◽  
2006 ◽  
Vol 25 (7) ◽  
pp. 1514-1518 ◽  
Author(s):  
Stefan Dolder ◽  
Shi-Xia Liu ◽  
Eva Beurer ◽  
Lahcène Ouahab ◽  
Silvio Decurtins
Keyword(s):  
Crystal Structure ◽  
Charge Transfer ◽  
Charge Transfer Complex ◽  
Synthesis And Characterization

scholarly journals Intermolecular interactions and charge transfer in the 2:1 tetrathiafulvalene bromanil complex, (TTF)2-BA

2011 ◽  
Vol 67 (3) ◽  
pp. 244-249 ◽  
Author(s):  
Pilar García-Orduña ◽  
Slimane Dahaoui ◽  
Claude Lecomte
Keyword(s):  
Crystal Structure ◽  
Phase Transition ◽  
Charge Transfer ◽  
Room Temperature ◽  
Charge Transfer Complex ◽  
Structural Phase ◽  
X Ray Diffraction ◽  
X Ray ◽  
Donor And Acceptor ◽  
A Charge

The crystal structure of the 2:1 charge-transfer complex of tetrathiafulvalene [2,2′-bis(1,3-dithiolylidene)] and bromanil (tetrabromo-1,4-benzoquinone) [(TTF)2-BA, (C6H4S4)2–C6Br4O2] has been determined by X-ray diffraction at room temperature, 100 and 25 K. No structural phase transition occurs in the temperature range studied. The crystal is made of TTF–BA–TTF sandwich trimers. A charge-transfer estimation between donor and acceptor (0.2 e) molecules is proposed in comparison to the molecular geometries of TTF–BA and TTF and BA isolated molecules. Displacement parameters of the molecules have been modeled with the TLS formalism.

Structural characterization of crystals of α-glycine during anomalous electrical behaviour

2002 ◽  
Vol 58 (4) ◽  
pp. 728-733 ◽  
Author(s):  
Paul Langan ◽  
Sax A. Mason ◽  
Dean Myles ◽  
Benno P. Schoenborn
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Phase Transition ◽  
Neutron Diffraction ◽  
Electrical Behaviour ◽  
Dynamic Changes ◽  
Temperature Range ◽  
Increasing Temperature ◽  
Molecular Layers

The crystal structure of α-glycine has been investigated in the temperature range 288–427 K using neutron diffraction. The molecular structure does not change significantly and the putative crystallographic phase transition associated with anomalous electrical behaviour in this temperature range is not observed. The unit cell expands anisotropically with increasing temperature, with the unique monoclinic b axis, corresponding to the stacking direction of molecular layers, changing the most. The increasing separation of antiferroelectric molecular layers with increasing temperature is driven by an increase in molecular libration about an axis that lies perpendicular to the b axis. There is also a weakening of the interlayer hydrogen bonds with temperature. These structural and dynamic changes will affect the response of molecular dipoles to an applied electric field and provide a possible mechanism for the anomalous electrical behaviour.

scholarly journals Isolation and X-ray Crystal Structure of an Electrogenerated TEMPO–N3 Charge-Transfer Complex

2021 ◽  
Author(s):  
Hosea M. Nelson ◽  
Juno C. Siu ◽  
Ambarneil Saha ◽  
Duilio Cascio ◽  
Samantha N. MacMillan ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Charge Transfer ◽  
Charge Transfer Complex ◽  
X Ray

Possible low-temperature phase transition of Langmuir–Blodgett films of a charge–transfer complex detected by ESR

1998 ◽  
Vol 327-329 ◽  
pp. 391-394
Author(s):  
Keiichi Ikegami ◽  
Shin-ichi Kuroda ◽  
Tomoyuki Akutagawa ◽  
Taro Konuma ◽  
Takayoshi Nakamura ◽  
...  
Keyword(s):  
Phase Transition ◽  
Charge Transfer ◽  
Low Temperature ◽  
Charge Transfer Complex ◽  
Temperature Phase ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Films ◽  
Temperature Phase Transition ◽  
A Charge ◽  
Low Temperature Phase
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