𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Conformational chirality of chemically symmetric mol­ecules and a superlattice through enantioselective self-assembly: 1,1,1-tris­[(4-cyano­phenoxy)­methyl]­ethane

✍ Scribed by Xu, Wei ;Zou, Zhen-Guang ;Guo, Peng ;Lu, Yin-Xiang

Publisher
International Union of Crystallography
Year
2004
Tongue
English
Weight
196 KB
Volume
60
Category
Article
ISSN
1600-5368

No coin nor oath required. For personal study only.

✦ Synopsis

The title compound, C 26 H 21 N 3 O 3 , is a chemically symmetrical molecule with one methyl group and three (4-cyanophenoxy)methyl groups bonded to a tetracoordinate C atom. It crystallizes in the centrosymmetric space group P1. In the crystal structure, there are many non-covalent interactions, including OÁ Á ÁN short contacts and antiparallel dipole-dipole interactions. The tetracoordinate C atom of the molecule exhibits central chirality, while the three attached groups exhibit different axial chirality. The enantiomers form homochiral monolayers through enantioselective selfassembly, and the monolayers are packed in the formation of a superlattice based on alternating the two enantiomeric states. The physical image of molecular chirality as well as the concept of a superlattice with respect to chirality may provide a new insight into such a racemic crystal, which is very common in crystallography.

📜 SIMILAR VOLUMES

1,1,1-Tris­[(pyrrol-1-yl)­methyl]­ethane
1,1,1-Tris­[(pyrrol-1-yl)­methyl]­ethane: herring-bone packing of supramolecular assemblies in a homochiral crystal from chemically symmetric mol­ecules
✍ Xu, Wei ;Lu, Yin-Xiang ;Zou, Zhen-Guang ;Liu, Chun-Ming ;Lan, Bi-Jian ;Zhou, Hui 📂 Article 📅 2004 🏛 International Union of Crystallography 🌐 English ⚖ 148 KB

Single-crystal X-ray study T = 298 K Mean '(C±C) = 0.005 A Ê R factor = 0.057 wR factor = 0.138 Data-to-parameter ratio = 9.5 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.