摘要:

AbstractA summary of all the one‐bond carbon–carbon spin–spin coupling constants, Known up to the beginning of 1980, is given in diagrammatic

ISSN:0030-4921    

DOI:10.1002/mrc.1270150122

出版商:John Wiley&Sons Limited    

年代:1981

数据来源: WILEY

摘要:

Abstract15N and13C satellites in the Proton spectrum of nitromethane oriented in a lyotropic solvent have been observed. Indirect as well as direct (13CH) and (15NH) couplings have been measured and the molecular structure has been derived.

ISSN:0030-4921    

DOI:10.1002/mrc.1270150123

出版商:John Wiley&Sons Limited    

年代:1981

数据来源: WILEY

摘要:

Abstract15N chemical shifts of 32 substituted pyridines and 19 substituted pyrimidines, together with additional data from the literature, are used to evalute substituent increments, Aiand Aik, in the respective series. Differential chemical shifts, Δδ(N), correlate with corresponding Δδ(C) values whereby, on the ppm scale, nitrogen shifts are approximately three times more sensitive towards substituents than carbon shifts. The15N increments have proven additive and useful for assignment purpo

ISSN:0030-4921    

DOI:10.1002/mrc.1270150124

出版商:John Wiley&Sons Limited    

年代:1981

数据来源: WILEY

ISSN:0030-4921    

DOI:10.1002/mrc.1270150101

出版商:John Wiley&Sons Limited    

年代:1981

数据来源: WILEY