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

• Tipo: Artigo em Revista Científica Internacional
• Data: 2019

Autores

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

Revista

Título: Crystal Growth & Design

Vol. 19

Páginas: 5768-5775

ISSN: 1528-7483

Editora: American Chemical Society

Indexação

ISI Web of Knowledge - 3 Citações

Scopus - 4 Citações

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8