Complete solution NMR analysis of three oligoimine model compounds
Date of Original Version
A series of three model compounds (monomer, dimer and trimer analogues) representing polyisocyanides were synthesized and their solution NMR spectra were characterized. Analysis of the monomer and dirner analogues led to the conclusion that the most stable forms of these molecular systems are planar with the C - C bond in an s-trans conformation and the imine moieties in a Z conformation. In solution, the trimer analogue exhibits a preferred conformation that has a planar s-trans-diimine segment covalently attached to a magnetically isolated monoimine segment such that each segment is oriented at approximately 90° to the other. This latter observation gives significant insight into the preferred molecular structure to be expected for sterically unconstrained poly(N-phenyliminomethylene) in solution. © 1998 John Wiley & Sons, Ltd.
Magnetic Resonance in Chemistry
Spencer, Lynne, William B. Euler, Daniel D. Traficante, Misoo Kim, and William Rosen. "Complete solution NMR analysis of three oligoimine model compounds." Magnetic Resonance in Chemistry 36, 6 (1998): 398-402. doi:10.1002/(sici)1097-458x(199806)36:6<398::aid-omr315>3.3.co;2-l.