SCHEDULED MAINTENANCE
The carbonyl i.r. band of 1,2-dimethyl-3,5-diphenylanhydro-4-hydroxy-1,2-diazolium hydroxide (Ia)(1545 cm–1 in Me2SO) was identified by its large solvent shift which correlates linearly with a large solvent shift in the u.v. spectrum.
M. J. Nye, M. J. O'Hare and W. Tang, J. Chem. Soc., Chem. Commun., 1973, 402 DOI: 10.1039/C39730000402
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