Total CCl4 guest alignment in a quasiracemic clathrate closely related to Dianin’s compound

Total CCl4 guest alignment in a quasiracemic clathrate closely related to Dianin’s compound

CrystEngComm, 2017, 19,5703-5706
DOI: 10.1039/C7CE01275F, Communication

Christopher S. Frampton, James H. Gall, David D. MacNicol
In the trigonal CCl₄quasiracemic clathrate, space group R3, formed from host components S-(-)-Dianin’s compound, 4, and its (+)-2R,4R 2-nor methyl analogue, 2, the unprecedented complete ordering of a C-Cl bond of the guest with respect to the c-axial direction and the participation of an unexpected host conformation is reported for the first time.

http://pubs.rsc.org/en/Content/ArticleLanding/2017/CE/C7CE01275F?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+rss%2FCE+%28RSC+-+CrystEngComm+latest+articles%29#!divAbstract

Christopher S. Frampton,*^a  James H. Gall^b  and  David D. MacNicol*^b 

 Author affiliations

*Corresponding authors

^aWolfson Centre for Materials Processing, Brunel University, Kingston Lane, Uxbridge, UK
E-mail: chris.frampton@brunel.ac.uk
Fax: +44 (0)1895 203376
Tel: +44 (0)1895 265337

^bDepartment of Chemistry, University of Glasgow, Glasgow G12 8QQ, UK
E-mail: david.macnicol@glasgow.ac.uk
Tel: +44 (0)141 330 4479

Abstract

Single crystal X-ray analysis at 100 K reveals that in the trigonal CCl₄quasiracemic clathrate, space group R3, formed from host components S-(−)-Dianin’s compound and its (+)-2R,4R 2-nor methyl analogue there is an unprecedented complete ordering of a C–Cl bond of the guest with respect to the c-axial direction. In this clathrate and that formed from the (+)-2R,4R and (+)-2R,4S epimers the participation of an unexpected host conformation is reported for the first time.

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