Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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Relative enthalpies of isomers - Comparison of 298.15K enthalpies (kJ mol^-1)

Isomers of C₂H₄N₄

index	Species	CAS number	Name	Relative experimental enthalpy (kJ mol-1)	sketch
a	C2H4N4	4076362	1H-Tetrazole, 5-methyl-	0.0
b	C2H4N4	16681779	1H-Tetrazole, 1-methyl-	42.2
c	C2H4N4	16681780	2H-Tetrazole, 2-methyl-	47.7