CCCBDB listing of experimental data page 2

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Property	Value	Uncertainty	units	Reference	Comment
Hfg(298.15K)	584.51		kJ mol^-1	webbook
Hfg(0K)			kJ mol^-1	webbook

Mode Number	Symmetry	Frequency			Intensity			Comment	Description
Mode Number	Symmetry	Fundamental(cm^-1)	Harmonic(cm^-1)	Reference	(km mol^-1)	unc.	Reference	Comment	Description
1	Σ⁺	1419		1998Cli/Wen:7100-7112				nu3	CN stretch
2	Σ⁺	1235						nu1	NN stretch
3	Π	396						nu2	bend

Bond Type	Count
C=N	1
N=N	1

Atom 1	Atom 2
C1	N2
N2	N3

State	Config	State description	Conf description	Exp. min.	Dipole (Debye)				Reference	comment	Point Group	Components
State	Config	State description	Conf description	Exp. min.	x	y	z	total	Reference	comment	Point Group	dipole	quadrupole
1	1	³Σ^-	C_∞v	True							C_∞v	1	1

	Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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squib	reference	DOI
1998Cli/Wen:7100-7112	EP Clifford, PG Wenthold, WC Lineberger, GA Petersson, KM Broadus, SR Kass, S Kato, CH DePuy, VM Bierbaum, GB Ellison "Properties of Diazocarbene [CNN] and the Diazomethyl Radical [HCNN] via Ion Chemistry and Spectroscopy" J. Phys. Chem. A 1998, 102, 7100-7112	10.1021/jp9802735
webbook	NIST Chemistry Webbook (http://webbook.nist.gov/chemistry)	10.18434/T4D303

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Experimental data for CNN (Diazocarbene)