Bromide and Tribromide 4-Cyanobenzene-Ethylenedithio- Tetrathiafulvalene Radical Salts by Chemical and Electrochemical Routes

• Type: Article in International Scientific Journal
• Date: 2019

Authors

Varatojo, A (Author) Other; Lopes, G (Author) Other; da Gama, V (Author) Other; Oliveira, G (Author) FCUP; Santos, IC (Author) Other; Lopes, EB (Author) Other; Simao, D (Author) Other; Almeida, M (Author) Other; Rabaca, S (Author) Other

Journal

Title: Crystal Growth & Design

Vol. 19

Pages: 5768-5775

ISSN: 1528-7483

Publisher: American Chemical Society

Indexing

ISI Web of Knowledge - 3 Citations

Scopus - 4 Citations

Other information

Authenticus ID: P-00R-4TE

DOI: 10.1021/acs.cgd.9b00790

Abstract (EN): Two salts of the dissymmetric TTF-derivative 4-cyanobenzene-ethylenedithio-tetrathiafulvalene (4-CNB-EDT-TTF) with bromide and tribromide anions and with different stoichiometries, namely, (1:1) (4-CNB-EDT-TTF)Br-3 (1) and (4:1) (4-CNB-EDT-TTF)(4)Br (2), were obtained by electrocrystallization and diffusion methods, respectively. The crystal structures of these compounds, as determined by single-crystal X-ray diffraction, are based on head-to-tail donor dimers with ring over ring overlap and donor stack arrangement, interleaved by anions depending on the (1:1) or (4:1) salt, respectively. The 4:1 salt behaves as a Mott insulator. In both salts, the donors are connected to adjacent donors through C-N center dot center dot center dot H-C interactions, which can be described as an modified R-4(2) (10)* synthon for 1 and a combination of R-2(2) (10) and R-4(2)(10) synthons for 2.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8