NMR of a Glycine Single Crystal

摘要

The NMR absorption of a glycine single crystal was observed at 77deg; and 293deg;K for various orientations of the sample in the external magnetic field. On the basis of theoretical second moments computed from Van Vleck's equation it is concluded that the NH3+group is a regular tetrahedron whose axis lies along the Csngbnd;N bond. The Nsngbnd;H bond distance was determined to be 1.077plusmn;0.01 A.It is concluded from the agreement between the computed and observed angular dependence of the second moments that the proposed model is correct.