Naslov
Crystal structure of glycolaldehyde solved from powder diffraction data

Autori
Prugovečki, Stjepan ; Mohaček-Grošev, Vlasta ; Strukan, N ;

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

Izvornik
Book of abstracts / - Zagreb, 2005

Skup
Fourteenth Croatian-Slovenian Crystallographic Meeting

Mjesto i datum
Vrsar, Hrvatska, 15.06.2005. - 17.06.2005

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Domaća recenzija

Ključne riječi
crystal structure; powder diffraction; glycolaldehyde
(kristalna struktura; difrakcija na praškastom uzorku; glikolaldehid)

Sažetak
The title compound has been obtained from commercial supplier (Fluka). It has been known that glycolaldehyde can crystallize in two crystal phases a and b, the evidence of which was given by vibrational spectroscopy. However, no conformation of two hydroxyl groups attached to dioxane ring was given for each crystal phase. The powder pattern was collected on a laboratory diffractometer with reflection geometry, but showed extreme preferred orientation, so that capillary transmission was only choice. Sample was filled into a 0.5 mm capillary and pattern was collected on the XPert PRO diffractometer with focusing mirror and XCelerator detector. The pattern was successfully indexed with high figure of merit. The unit cell was monoclinic a=5.621(2) A, b=8.402(2) A, c=5.948(2) A, beta=114.92(2). Space group search by Pawwley method suggested space group P2/a Structure was successfully solved by direct methods program suite EXPO.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA