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Nuclear magnetic resonance studies: VII—13C and 15N n.m.r. of diazo compounds

✍ Scribed by Thomas A. Albright; Walter J. Freeman

Publisher
John Wiley and Sons
Year
1977
Tongue
English
Weight
469 KB
Volume
9
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

The ^13^C and ^15^N n.m.r. results for a series of diazo compounds are reported. It is found that the diazo carbon is shielded by an extraordinary amount compared with normal sp^2^ hybridized carbons. The ^15^N chemical shifts reveal that the terminal nitrogen is deshielded relative to the central one. This is contrary to that expected from charge effects but support is found for this phenomenon in other systems. One‐bond ^13^C^14^N coupling in diazomethane is also reported for the first time. INDO MO calculations of the charges and finite perturbation calculations of ^13^C^14^N and CH couplings are compared with the experimental results.

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