Naslov
Crystallization of new copper halide polymorphs from supramolecular gels

Autori
Cetina, Mario ; Džolić, Zoran

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

Izvornik
25. Hrvatski skup kemičara i kemijskih inženjera s međunarodnim sudjelovanjem ; 3. simpozij Vladimir Prelog : knjiga sažetaka = 25th Croatian Meeting of Chemist and Chemical Engineers with international participation. 3rd symposium “Vladimir Prelog” : Book of Abstracts / Šantić, Ana ; Đaković, Marijana - Zagreb : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI) ; Hrvatsko kemijsko drustvo, 2017, 156-156

ISBN
978-953-552327-7

Skup
25. Hrvatski skup kemičara i kemijskih inženjera s međunarodnim sudjelovanjem ; 3. simpozij Vladimir Prelog = 25th Croatian Meeting of Chemist and Chemical Engineers with international participation. 3rd symposium “Vladimir Prelog”

Mjesto i datum
Poreč, Hrvatska, 19.04.2017. - 22.04.2017

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
metallogel ; crystallization ; X-ray diffraction

Sažetak
The self-assembly of low-molecular-weight organogelators (LMWGs) renders supramolecular gels by the operation of hierarchical non-covalent forces. The unique features of supramolecular gels and their dynamic nature have stimulated numerous curiosity-driven studies, as well as the discovery of potentially innovative and highly technological applications. Particularly interesting is the exploitation of supramolecular gels as media for the crystal growth of molecular species since it is possible to attain different polymorphs and crystal habits, one of the key issue in pharmaceutical industry. Gel phase crystallization represents a prime de facto example of orthogonal self-assembly of the crystals and gel network, which are generally microphase separated and retain a distinct identity [1]. We have recently described the CuX2-induced (X = Cl, Br) and water-mediated metallogel formation by a pyridine containing anthraquinone-based ligand in dimethyl sulfoxide (DMSO) [2]. This system withstands the presence of a significant excess of Cu(II) ions and we have exploited this unusual feature as a medium for a metal salt crystal growth. Indeed, the crystals of two copper halide polymorphs are produced spontaneously upon aging the Cu(II)-metallogel after one week at room temperature. X-ray crystal structure analysis showed that one Cu(II) complex is mononuclear, while the other is dihalo-bridged Cu(II) complex. In both of them, [CuBr2(DMSO)3] and [CuCl(DMSO)2(mi-Cl)]2, polyhedron around the Cu(II) ion could be best described as distorted square pyramid (Figure 1).

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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