Naslov
Multi-component crystals with copper(II) complexes as halogen bond donors

Autori
Baus Topić, Nea ; Cinčić, Dominik

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Skup
7th European Crystallographic School

Mjesto i datum
Lisabon, Portugal, 10.07.2022. - 15.07.2022

Vrsta sudjelovanja
Poster

Vrsta recenzije
Podatak o recenziji nije dostupan

Ključne riječi
halogen bond ; cocrystal ; copper(II) complex ; multi-component crystal

Sažetak
In the design of halogen-bonded1 metal-organic multi-component crystals, metal-organic cocrystals can be used as halogen bond acceptors or donors, depending on the functional groups in periphery of organic ligands. Choosing the appropriate functional groups in ligands can enable the formation of specific intermolecular interactions between metal-organic complex and its supramolecular surroundings. Most of the research in this field was focused on investigating metal- organic complexes as halogen bond acceptors.2 In this research, we have prepared novel cocrystals in which imine copper(II) complexes are halogen bond donors. Imine used as a ligand was prepared by condensation of 2, 3, 5, 6-tetrafluoro-4- iodoaniline and salicylaldehyde – itfasal. Furthermore, copper(II) complexes Cu(itfasal)2 and Cu(pyridine)(itfasal)2 were synthesized. Those complexes were cocrystallized with ditopic nitrogen-containing halogen bond acceptor 1, 4- diazabicyclo[2.2.2]octane (dabco) in 1:1 stoichiometric ratio (Figure 1). Prepared compounds were characterized by diffraction methods (single-crystal X-ray diffraction and X- ray powder diffraction) and their thermal stability was determined by thermogravimetric analysis. Structure analysis revealed that in both cocrystals the desired I...N halogen bond was formed between iodine atoms from peripherally perhalogenated metal-organic units and nitrogen atoms of dabco molecule. In both cocrystals, molecules are connected into chains by halogen bonds and are furthermore linked into three dimensions by C-H...C and C-H...F contacts. 1 G. Cavallo, P. Metrangolo, R. Milani, T. Pilati, A. Priimagi, G. Resnati and G. Terraneo, Chem. Rev., 2016, 116, 2478-2601. 2 V. Nemec, K. Lisac, N. Bedeković, L. Fotović, V. Stilinović and D. Cinčić, CrystEngComm, 2021, 23, 3063-3083.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA