Naslov
Non-merohedral twinning in the structure of rac-NN'-bis(oxalyl valinol)

Autori
Štefanić, Zoran ; Meden, Anton ; Kojić-Prodić, Biserka ; Makarević, Janja ; Jokić, Milan ; Žinić, Mladen

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

Izvornik
Twelfth Croatian-Slovenian crystallographic meeting : Book of Abstracts and Programme / - Zagreb : Hrvatska kristalografska zajednica HAZU, 2003

Skup
Croatian-Slovenian crystallographic meeting (12 ; 2003)

Mjesto i datum
NP Plitvička jezera, Hrvatska, 19.06.2003. - 22.06.2003

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
twinning; hydrogen-bonding

Sažetak
A twinned crystal is an aggregate in which different domains are joined together according to a specific symmetry operation. In the case of merohedral twinning this symmetry operation belongs to the supergroup of the space group of the crystal, but not in the case of non-merohedral twins. Thus, non-merohedral twin can be easily recognized on a diffraction pattern. The title compound shows twinning which can be detected even by point detector during the data collection. The title compound (1) crystallizes as non-merohedrical twin in the triclinic space group P-1 (2). The twin law is a 180° rotation around b axes of the monoclinic supercell. The analysis of twinning law was by use of the program ROTAX[1]. Data collection was also performed using a CCD detector to resolve the problem of twinning (3). The structure was solved and refined in P-1 space group.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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