Journal of Physical Chemistry B, Vol.115, No.51, 15415-15421, 2011
Disentangling Crystallographic Inequivalence and Crystallographic Forms of L-Arginine by One- and Two-Dimensional Solid-State NMR Spectroscopy
Overlapping (13)C or (15)N solid-state NMR spectra from crystallographically different forms of L-arginine hydrochloride can be separated by exploiting differential proton T(1) relaxation in conjunction-with cross-polarization. Dipolar (13)C-(13)C and (15)N-(15)N two-dimensional correlation experiments reveal resonances belonging to crystallographically and magnetically inequivalent molecules.