Naslov
O-Phenylenediamine hexacyanoferrates – diversity out of nowhere

Autori
Cvrtila, Ivica ; Stilinović, Vladimir ; Kaitner, Branko

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

Izvornik
The twentieth Croatian-Slovenian Crystallographic Meeting ; Book of Abstracts / Cetina, Mario ; Matković Čalogović, Dubravka ; Popović, Stanko ; Skoko, Željko ; Štefanić, Zoran ; Višnjevac, Aleksandar - Zagreb : Hrvatska akademija znanosti i umjetnosti (HAZU) ; Hrvatska Kristalografska Zajednica, 2011, 21-21

Skup
The twentieth Croatian-Slovenian Crystallographic Meeting

Mjesto i datum
Baška, Hrvatska, 15.06.2011. - 19.06.2011

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Domaća recenzija

Ključne riječi
hexacyanoferrate(II); o-phenylenediamine; hydrogen bonding; crystal structure

Sažetak
Hexacyanoferrate anions are, being potential acceptors (or donors, if protonated) of six or more (bifurcated) hydrogen bonds, interesting as useful building blocks in creating multidimensional hydrogen bonded networks. In our ongoing research on hexacyanoferrate(II) salts of organic bases o-phenylenediamine was chosen as a possible bridging molecule between hexacyanoferrate units. Thus, a number of o-phenylenediamine hexacyanoferrates(II) were prepared and characterized by single crystal X-ray diffraction methods. As expected, in the structures of all analysed compounds hexacyanoferrate(II) units are bridged by protonated o-phenylenediamine and solvent molecules whereby complex hydrogen bonded networks are formed. Also, many interesting structural motifs such as multiple bridging (Figure 1. a), as well as pseudosimmetry or multiple periodicities along the same axis (Fiure 1. b) were found in the structures of analysed compounds. Starting from the first crystallization experiments, it was interesting to found that there was always more than one crystalline product of a single crystallization. In order to find out how many o-phenylenediamine hexacyanoferrates(II) really exist, and how the solvents and crystallisation conditions affect the outcome of preparations, series of crystallization experiments were performed, followed by X-ray powder diffraction analysis of bulk products. Results show that there is always the same dominant compound and usually several others, not all of them found as crystals suitable for diffraction analysis.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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