PREDICTION AND STRUCTURE OF POLYMORPHIC LATTICE INCLUSION-COMPOUNDS OF 2,7-DIMETHYLTRICYCLO[4.3.1.0(3,8)]UNDECANE-SYN-2,SYN-7-DIOL

被引:30
作者
UNG, AT [1 ]
BISHOP, R [1 ]
CRAIG, DC [1 ]
DANCE, IG [1 ]
SCUDDER, ML [1 ]
机构
[1] UNIV NEW S WALES, SCH CHEM, KENSINGTON, NSW 2033, AUSTRALIA
关键词
D O I
10.1016/S0040-4020(01)86266-9
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The host molecule 2,7-dimethyltricyclo[4.3.1.0(3,8)]undecane-syn-2,syn-7-diol 1 is known to form two different structural types of lattice inclusion compound dependent on the guest molecule chosen. Guests, including 1,2-dichlorobenzene 2, have now been predicted which result in the formation of both lattice types according to the crystallisation conditions employed. Crystal structures of the ellipsoidal clathrate type: (Racemic-1)4.(1,2-Dichlorobenzene), space group I4(1)/acd; and the helical tubulate type: (Resolved-1)3.(1,2-Dichlorobenzene), space group P3(1)21 are presented. The latter polymorph is transformed into the former on heating in a sealed system.
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页码:639 / 648
页数:10
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