Journal of the American Chemical Society

Syntheses in the Pyrazine Series. Preparation of 2, 5-Dicyanopyrazine and the Diacetyl Diamide of Pyrazine Dicarboxylic Acid-2, 5

IJ Krems, PE Spoerri

Index: Krems; Spoerri Journal of the American Chemical Society, 1946 , vol. 68, p. 527

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Citation Number: 2

Abstract

The composition of equilibrium mixtures of tetraethyl and tetramethyl lead is determined, according to Calingaert and B eatt~,~ merely by the external symmetry numbers of the molecules involved. Stearn10 pointed out that this means that the heat of the redistribution ...