Abstract
The quadrupole coupling of the deuteron (eqQ) D was measured in DCCCl where it was found to be +175±20 kc/sec. A less accurate determination of the absolute value (eqQ) D in DCN yielded approximately 290 kc/sec. The field gradient, q, at the deuterium nucleus in DCCCl is +8.85±10 percent×1014 esu. A calculation of q based on a Hund‐Mulliken molecular model yields a q of the same sign as that observed but approximately twice as large, indicating the insufficiency of the model for such detailed calculations.