Naslov
Influence of organic cations on the stacking of semiquinone radical anions

Autori
Molčanov, Krešimir ; Milašinović, Valentina ; Ivić, Nives ; Stilinović, Vladimir ; Kolarić, Dinko ; Kojić-Prodić, Biserka

Izvornik
Crystengcomm (1466-8033) 21 (2019), 45; 6920-6928

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

Ključne riječi
semiquinone radicals ; pancake bonding ; π interactions ; crystal engineering

Sažetak
A series of seven novel salts of tetrachloro- and tetrabromosemiquinone radical anions with organic cations is prepared and structurally characterised by single-crystal X-ray diffraction. Four types of stacks of radical anions have been identified: i) stacks of pancake-bonded dimers (Peierls-distorted stacks), ii) stacks of pancake-bonded trimers, iii) stacks of equidistant radicals and iv) a novel type of equidistant stacks of partially charged radicals (charge: −1/2, imposed by a stoichiometry of 1 : 2). Cations play an important role in stabilisation of the stacks of radical anions ; the structures with stacks of equidistant radicals include columns of cations. However, the structures having pancake-bonded dimers and trimers are accompanied by isolated pairs of cations.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA