Naslov
One-Dimensional π-Stacks of Pancake-Bonded 5,6- Dichloro-2,3-dicyanosemiquinone Radical Anions

Autori
Stanić, Petra ; Barišić, Dario ; Pajić, Damir ; Šantić, Ana ; Molčanov, Krešimir

Izvornik
Crystal growth & design (1528-7483) 22 (2022), 11; 6461-6471

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
DDQ , ; radica ; , multicentre two-electron bonding ; π-stacking, crystal engineering ; electrical conductivity ; diamagnetism

Sažetak
A series of six novel salts of 5, 6-dichloro-2, 3- dicyanosemiquinone (DDQ) radical anions with aromatic cations is studied by structural characterization, magnetization, and conductivity measurements. Different types of stacking of DDQ radicals, which determine electrical and magnetic properties, are observed: regular stacks of equidistant radicals (resulting in semiconductivity along the direction of stacking), stacks of pancake-bonded dimers, isolated pancake- bonded dimers, and mixed stacks comprising DDQ radicals and aromatic cations. General features of pancake bonding of DDQ radicals are defined: parallel ring planes, offset along the carbonyl···carbonyl axis by 2.05–2.15 Å, and interplanar separations of 2.90–2.95 Å (for pancake-bonded dimers) or 3.08– 3.24 Å (for regular stacks of equidistant radicals).

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Interdisciplinarne prirodne znanosti

POVEZANOST RADA