CCCBDB listing of experimental data page 2

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Atom 1	Atom 2
C1	H2
C1	H3
C1	H4
C1	H5

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	²A₁	T_d	True							T_d	0	0
1	2	²A₁	C_3v	False							C_3v	1	1

State	Config	State description	Conf description	Exp. min.	Quadrupole (D Å)			Reference	comment	Point Group	Components
State	Config	State description	Conf description	Exp. min.	xx	yy	zz	Reference	comment	Point Group	dipole	quadrupole
1	1	²A₁	T_d	True						T_d	0	0
1	2	²A₁	C_3v	False						C_3v	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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Experimental data for CH4- (Methane anion)

Experimental data for CH₄^- (Methane anion)