Naslov
Attempted cocrystallisation yields hydrogen-bonded salts of β-diketones

Autori
Judaš, Nenad ; Friščić, Tomislav ; Jones, Bill

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

Skup
18. Hrvatsko-slovenski kristalografski sastanak

Mjesto i datum
Varaždin, Hrvatska, 17.06.2009. - 21.06.2009

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
liquid assisted grinding; hydrogen bonded beta-diketonate organic salts

Sažetak
The atempt to use liquid-assisted grinding (LAG)[1] to prepare the Co(dbm)2(tmo)2 complex from CoO, dibenzoylmethane (Hdbm) and thiomorpholine (tmo) failed. Instead, powder diffraction (PXRD) indicated that a new organic phase was obtained. The experiment was repeated without CoO and in several Hdbm to tmo stoichiometry ratios. PXRD patterns and thermal analysis confirmed that the product consists of Hdbm and tmo in a 1 : 1 stoichiometric ratio. Although the product was soluble in various organic solvents it was not possible to re-crystallise it, as pure Hdbm was repeatedly obtained. Subsequently, single crystals were obtained from a solution in liquid tmo. LAG screening of mechanochemical reactivity revealed that Hdbm also readily forms new materials with secondary amines: morpholine (mor), piperidine (pip) and 2, 6-dimethylpiperidine (26Mepip). The use of these liquids as solvents provided single crystals of (Hdbm)•(mor), (Hdbm)•(pip) and (Hdbm)•(26Mepip).

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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