ISSN:
1573-9171
Keywords:
perchlorates ofN-ammo andN-azomethine derivatives of 2,4,6-triphenylpyridinium cations
;
molecular and crystal structure
;
photocyclization
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The molecular structures of the initial compounds and the products of photocyclization involving amino and azomethine groups in perchlorates ofN-amino (1) andN-azomethine (2) derivatives of 2,4,6-triphenylpyridinium cations were studied. Cations1 and2 have an essentially non-coplanar arrangement of the α-Ph rings, and the product of photocyclization of2, cation3, is characterized by a flattened structure. It was found that the orientation of the lone electron pair of the N atom with respect to one of the planes of the α-Ph rings in molecule1 is more favorable for monocyclization involving the amino group. The structure of molecule2 allows two routes of the photoreaction,viz., O → N proton transfer and monocyclization with an α-Ph ring. However, the structural features of molecule2 are more favorable for photocyclization.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00702137
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