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Spectroscopy Letters
An International Journal for Rapid Communication
Volume 24, 1991 - Issue 5
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Original Articles

13C - 1H Coupling Constants. Observation of 4J48 Long Range Inter - Ring “Zig - Zag” Coupling in the Quinoline System

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Pages 733-740 | Received 11 Feb 1991, Accepted 26 Feb 1991, Published online: 23 Sep 2006
 

Abstract

Long range inter—ring “zig—zag” coupling between C-4 and H-8 (J48 −1.5 to −1.8 Hz) has been observed in some 2,4− and 2,3,4− haloquinolines at 75 MHz. The coupling is influenced by the 4-halo substituent.

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