β Scribed by H. Dreeskamp; Chr. Schumann
No coin nor oath required. For personal study only.
By a series of nuclear magnetic double-resonance experiments it is shown t-hat the geminaL H-H and H-C ccupling constants of group IV hydrides are increasing from C to Pb in accordance with a -qualitative argument on the basis of molecular orbital theory.
π SIMILAR VOLUMES
KNOWLEDGE of the effects of amine substituents on chemical shifts and coupling constants is important in elucidating the distributions of dissociable protons and rotamers in amino acids and other amine compounds at various pH values. In previous studies of 2,5-dimethylpiperazine and its hydrochlorid
## Abstract Values of __J__(5aβ5e) for indolizidine and related systems show that, contrary to results described in an earlier communication, these couplings do not differ markedly from the corresponding geminal coupling constant in quinolizidine.
## Lehn and co-workers have recently reported that the magnitude of J N,H(eem) 'trongly depends 'pan the orientation of lone-pair electrons on the nitrogen (l-3). Absolute values of J 15NH(9em)