ISSN:
1573-1111
Keywords:
Crown ether
;
nitromethane complex
;
coordination isomers
;
crystal structure
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Single crystal X-ray diffraction analyses of two nitromethane complexes of furanotribenzo-21-crown-7 (1 and2) and the nitromethane complex of dibenzo-2l-crown-7 (3) are reported. The two nitromethane complexes1 and2 are polymorphic in that the macrocyclic ring adopts the ‘dentist's chair’ conformation in both structures, with a single nitromethane molecule coordinating to either the lower, concave (1) or upper, convex (2) face of the crown ether. Complex3 adopts an entirely different conformation with a coplanar arrangement of the crown ether oxygen atoms binding a single nitromethane molecule.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01053538
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