G. Facey, T. J. Connolly, C. Bensimon
Oct 1, 1996
Citations
0
Influential Citations
11
Citations
Journal
Canadian Journal of Chemistry
Abstract
The solid state disorder of two tetrahydronaphthalene derivatives, N-methyl-N-methoxy-5,6,7,8-tetrahydro-l- naphthamide and 5,6,7,8-tetrahydro-l-naphthoic acid, was studied by solid state NMR and single crystal X-ray diffraction. The X-ray crystal structure of N-methyl-N-methoxy-5,6,7,8-tetrahydro-I-naphthamide was obtained at 123 K. It indicated the presence of two distinct molecular conformations. Solid state I3C CPIMAS NMR data using the dipolar dephasing technique revealed that the two conformations of the molecule are dynamically disordered, while solid state 'H NMR data, collected on a specifically deuterated analog, were used to determine the populations of each conformation as well as an apparent activation energy. Solid state NMR experiments were also used to show that 5,6,7,8-tetrahydro-I-naphthoic acid possesses the same type of dynamic disorder.