Accession Number:

AD0266693

Title:

LONG RANGE NUCLEAR SPIN-SPIN COUPLING. ALLENIC AND POLYACETYLENIC SYSTEMS

Descriptive Note:

Corporate Author:

CALIFORNIA INST OF TECH PASADENA GATES AND CRELLIN LABS OF CHEMISTRY

Personal Author(s):

Report Date:

1961-10-01

Pagination or Media Count:

1.0

Abstract:

A study was made to determine the magnitude and sign of coupling constants in allenic derivatives and to investigate some saturated systems for which significant super long-range coupling constants might reasonably be expected. Spinspin coupling between protons separated by 5 to 9 chemical bonds were observed in allenic and polyacetylenic systems. Analysis of the nuclear magnetic resonance spectrum of 1-chloro-1,2butadiene permitted the assignment of a negative sign to J13 opposite to the positive signs of J12 and J14. The relation of these results to the theory of proton-proton spin-spin coupling is discussed.

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE