H-1 NMR study on the conformation of 5-dicyanomethylene-10,11-dihydro-5H-dibenzo[a,d]cycloheptene

Authors
Szczecinski, P Maminski, M
Citation
P. Szczecinski et M. Maminski, H-1 NMR study on the conformation of 5-dicyanomethylene-10,11-dihydro-5H-dibenzo[a,d]cycloheptene, J CHEM R-S, (9), 2001, pp. 356-358
Citations number
5
Categorie Soggetti
Chemistry
Journal title
JOURNAL OF CHEMICAL RESEARCH-S
ISSN journal
03082342 → ACNP
Issue
9
Year of publication
2001
Pages
356 - 358
Database
ISI
SICI code
0308-2342(200109):9<356:HNSOTC>2.0.ZU;2-Q
Abstract
It has been found that the central ring of 5-dicyanomethylene-10,11-dihydro -5H-dibenzo[a,d]cycloheptene,1, undergoes bond inversion which is slow on t he NMR time scale at ambient temperature. The character of this conformatio nal process has been established and its activation energy estimated.