Abstract
13C Chemical shifts and J CH coupling constants are reported for xanthene and for some dimedone adducts containing a xanthene ring. A revised correlation pattern for the carbocyclic ring 3 J CH meta-couplings in fused oxygen heterocycles is proposed in which the magnitude of the interactions alternate around the ring.
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More From: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
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