No abstract

No abstract

behavior of the pyridine ring. The shifts cannot be unambiguously assigned to models at present since the experimental data can be fit by more than one set of geometrical parameters.Nonetheless, the pyridine ring appears to be positioned such that its symmetry axis makes a roughly 90°a ngle with respect to the Ln~N+ vector, as was found previously.14 We plan to continue these investigations by studying cations in which the steric bulk in the vicinity of the nitrogen atom varies in a controlled fashion.

No abstract

No abstract