National Institute of Standards and Technology

Computational Chemistry Comparison and Benchmark DataBase
Release 22	May 2022
NIST Standard Reference Database 101

I	Introduction
II	Experimental data
III	Calculated data
IV	Data comparisons
V	Cost comparisons
VI	Input and output files
VII	Tutorials and Units
VIII	Links to other sites
IX	Feedback
X	Older CCCBDB versions
XII	Geometries
XIII	Vibrations
XIV	Reaction data
XV	Entropy data
XVI	Bibliographic data
XVII	Ion data
XVIII	Bad calculations
XIX	Index of properties
XX	H-bond dimers
XXI	Oddities

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III.F.2.

Completed calculations for CH₃CN^- (acetonitrile anion)

Methods and basis sets for which an energy has been calculated. "e" indicates just an energy has been calculated. "o" indicates an optimized geometry. "v" indicates vibrational frequencies. "s" followed by a number indicates completed calculations for different states (for example s1ov). "c" followed by a number indicates completed calculations for different conformations (for example c2ov).
See the Calculated Energies page (section III.A.1) for more calculated properties.

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Methods with predefined basis sets

semi-empirical	AM1	c1o c2o
	PM3	c1o c2o
composite	G1	c1e
	G2MP2	c1e
	G2	c1e
	G3B3	c1e c2e
	G4	c1e

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Methods with standard basis sets

		STO-3G	3-21G	3-21G*	6-31G	6-31G*	6-31G**	6-31+G**	6-311G*	6-311G**	6-31G(2df,p)	6-311+G(3df,2p)	TZVP	cc-pVDZ	cc-pVTZ	cc-pVQZ	aug-cc-pVDZ	aug-cc-pVTZ	aug-cc-pVQZ	daug-cc-pVDZ	daug-cc-pVTZ
hartree fock	HF	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1ov c2o	c1o c2o	c1o c2o	c1o c2o	c1ov c2ov	c1ov c2o	c1o c2o	c1o c2o	c1ov	c1ov c2ov	c1ov c2ov	c1ov	c1ov c2ov	c1ov
	ROHF	c1o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1ov c2ov	c1ov c2o	c1ov c2o	c1o	c1ov c2ov	c1ov c2o	c1o c2o	c1ov c2o	c1ov	c1ov c2ov	c1ov c2ov	c1ov	c1ov c2ov	c1ov c2ov
density functional	LSDA					c1o
	BLYP	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c2ov	c1o c2o	c1o c2o	c1o c2o		c1ov c2ov	c1ov c2ov		c1ov c2ov	c1ov c2ov
	B1B95	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o	c1o	c1ov c2ov	c1ov c2ov	c1o		c1ov c2ov
	B3LYP	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o	c2ov	c1o c2o	c1o c2o	c1o c2o	c1o	c1ov c2ov	c1ov c2ov	c1ov	c1ov c2ov	c1ov c2ov
	B3LYPultrafine		c1o c2o			c1o c2o	c1o c2o	c1ov c2ov	c1o c2o		c1o c2o	c2ov	c1o c2o	c1o c2o	c1o c2o		c1ov c2ov	c1ov c2ov		c1ov c2ov	c1ov c2ov
	B3PW91	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o		c1ov c2ov	c1ov c2ov		c1ov c2ov	c1ov c2ov
	mPW1PW91	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o		c1ov c2ov	c1ov c2ov		c1ov c2ov	c1ov c2ov
	M06-2X	c1o c2o	c1o c2o	c1ov c2o	c1o c2o	c1o c2o	c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o	c1dnfv c2ov	c1o c2o	c1o c2o	c1o c2o		c1ov c2ov	c1ov c2ov
	PBEPBE	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o	c1o	c1ov c2ov	c1ov c2ov		c1ov c2ov	c1ov c2ov
	PBEPBEultrafine		c1o c2o			c1o c2o	c1o c2o	c2o	c1o c2o		c1o c2o	c1ov c2ov	c1o c2o	c2o	c1o c2o		c1ov c2ov	c1ov c2ov		c1ov c2ov	c1ov c2ov
	PBE1PBE	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o		c1ov c2ov	c1ov c2ov		c1ov c2ov	c1ov c2ov
	HSEh1PBE	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o		c1ov c2ov	c1ov c2ov		c1ov c2ov	c1ov c2ov
	TPSSh	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1ov c2o	c1o c2o	c1ov c2o	c2o	c1o c2o	c1ov c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o		c1ov c2ov	c1ov c2ov
	wB97X-D	c1o c2o	c1o c2o	c1ov c2o	c1o c2o	c1ov c2o	c1o c2o	c1ov c2o	c1o c2o	c1ov c2o	c1o c2o	c1ov c2ov	c1o c2o	c1ov c2o	c1o c2o		c1ov c2ov	c1ov c2ov		c1ov c2ov	c1ov
	B97D3	c1o c2o	c1ov c2o	c1o c2o	c1o c2o	c1ov c2o	c1o c2o	c1ov c2o	c2o	c1dnfv c2o	c1o c2o	c1o c2o	c2o	c1o c2o	c2o		c1ov c2ov	c1ov c2ov			c1dnfv c2dnf
		STO-3G	3-21G	3-21G*	6-31G	6-31G*	6-31G**	6-31+G**	6-311G*	6-311G**	6-31G(2df,p)	6-311+G(3df,2p)	TZVP	cc-pVDZ	cc-pVTZ	cc-pVQZ	aug-cc-pVDZ	aug-cc-pVTZ	aug-cc-pVQZ	daug-cc-pVDZ	daug-cc-pVTZ
Moller Plesset perturbation	MP2	c1o	c1o c2o	c1o c2o	c1o c2o	c1ov c2o	c1o c2o	c1ov c2ov	c1dnf c2o	c1o c2o	c1o c2o	c1ov c2ov	c1o c2o	c2o	c1o	c1o	c1ov c2ov	c1ov c2ov	c1o	c1ov c2ov	c1ov c2ov
	MP2=FULL	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o	c1o	c1ov c2ov	c1ov c2ov	c1o	c1ov c2ov	c1ov c2ov
	ROMP2	c1o c2o	c1o	c1o	c1o c2o	c1o c2o	c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o		c1ov c2ov			c1ov c2ov	c1ov c2ov
	MP3					c1o c2o		c1ov c2o				c1ov c2o	c1o c2o	c1o c2o	c1o c2o					c1ov c2ov
	MP3=FULL		c1o	c1o	c1o	c1ov c2o	c1o	c1ov c2o			c1o	c1ov	c1o		c1o		c1ov			c1ov
	MP4		c1o			c1o c2o				c1o c2o		c1ov c2ov	c1o c2o	c1o c2o	c1o c2o		c1ov	c1ov c2ov		c1ov c2ov	c1ov c2ov
	MP4=FULL		c1o			c1o c2o				c1o c2o		c1ov c2ov		c2o	c2o		c1ov	c1ov c2ov		c1ov c2ov	c1ov c2ov
	B2PLYP	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1dnf c2ov	c1o c2o	c1o c2o	c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o		c1ov c2ov	c1ov c2ov		c1ov c2ov	c1ov c2ov
	B2PLYP=FULL	c1o c2o	c1ov c2o	c1o c2o	c1o c2o	c1ov c2o	c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o	c2ov	c1o c2o	c1o c2o	c1o c2o		c1ov c2ov	c1ov c2ov		c1ov c2ov	c1ov c2ov
	B2PLYP=FULLultrafine	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o		c1ov c2ov	c1ov c2ov		c1ov c2ov	c1ov c2ov
Configuration interaction	CID		c1o c2o	c1o c2o	c1o c2o	c1o c2o			c1o c2o			c1ov c2o		c2o	c2o					c1ov c2ov
	CISD		c1o c2o	c1o c2o	c1o c2o	c1o c2o			c1o c2o			c1ov c2o		c1o c2o	c1o c2o					c1ov c2ov
		STO-3G	3-21G	3-21G*	6-31G	6-31G*	6-31G**	6-31+G**	6-311G*	6-311G**	6-31G(2df,p)	6-311+G(3df,2p)	TZVP	cc-pVDZ	cc-pVTZ	cc-pVQZ	aug-cc-pVDZ	aug-cc-pVTZ	aug-cc-pVQZ	daug-cc-pVDZ	daug-cc-pVTZ
Quadratic configuration interaction	QCISD		c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o	c1ov c2ov	c1o c2o	c2o	c1o c2o		c1ov c2ov			c1ov c2ov
	QCISD(T)					c1o c2o			c1o c2o			c1ov c2ov	c1o c2o	c1o c2o	c1o c2o		c1ov c2ov	c1ov c2ov		c1ov c2ov	c1ov c2ov
	QCISD(T)=FULL							c1ov				c1ov c2ov		c1o	c1o		c1ov c2o	c1ov		c1ov	c1ov
Coupled Cluster	CCD		c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o	c1ov c2o	c1o c2o	c1o c2o	c1o c2o		c1ov c2ov			c1ov c2ov
	CCSD					c1o c2o	c1o c2o	c1ov c2ov	c2o	c2o	c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o		c1ov c2ov	c2o		c1ov c2ov
	CCSD=FULL					c1o c2o					c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c2o		c1ov c2ov			c1o c2ov
	CCSD(T)					c1o c2o	c2o	c1ov	c2o	c1o c2o	c1o c2o	c1ov c2ov	c1o c2o	c1o c2o	c1o c2o		c1ov c2ov	c1ov c2o		c1ov c2ov	c1o c2ov
	CCSD(T)=FULL					c2o						c1ov c2ov	c1o c2o	c1o c2o	c2o		c1ov c2ov	c1ov c2ov		c1ov c2ov	c1o c2o
		STO-3G	3-21G	3-21G*	6-31G	6-31G*	6-31G**	6-31+G**	6-311G*	6-311G**	6-31G(2df,p)	6-311+G(3df,2p)	TZVP	cc-pVDZ	cc-pVTZ	cc-pVQZ	aug-cc-pVDZ	aug-cc-pVTZ	aug-cc-pVQZ	daug-cc-pVDZ	daug-cc-pVTZ

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Methods with effective core potentials (select basis sets)

		CEP-31G	CEP-31G*	CEP-121G	CEP-121G*	LANL2DZ	SDD	cc-pVTZ-PP	aug-cc-pVTZ-PP	Def2TZVPP
hartree fock	HF	c1o c2o	c1o c2o	c1o c2o	c1ov c2o	c1o c2o	c1o c2o			c1ov c2o
	ROHF									c1ov c2o
density functional	BLYP									c2o
	B1B95									c1o c2o
	B3LYP	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o			c1ov c2o
	B3LYPultrafine									c1o c2o
	B3PW91									c1o c2o
	mPW1PW91									c1o c2o
	M06-2X									c1o c2o
	PBEPBE									c1ov c2o
	PBEPBEultrafine									c2o
	PBE1PBE									c1o c2o
	HSEh1PBE									c1o c2o
	TPSSh									c1o c2o
	wB97X-D	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o			c1o c2o
	B97D3									c1o c2o
Moller Plesset perturbation	MP2	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o	c1o c2o			c2o
	MP2=FULL									c2o
	ROMP2									c1o c2o
	MP3									c1o c2o
	MP4									c1o c2o
	MP4=FULL									c1o c2o
	B2PLYP									c1o c2o
	B2PLYP=FULL									c1o c2o
	B2PLYP=FULLultrafine									c1o c2o
Configuration interaction	CID									c1o c2o
	CISD									c2o
Quadratic configuration interaction	QCISD									c1o c2o
	QCISD(T)									c1o c2o
	QCISD(T)=FULL									c1o
Coupled Cluster	CCD									c1o c2o
	CCSD									c2o
	CCSD=FULL									c2o
	CCSD(T)									c1o c2o
	CCSD(T)=FULL									c1o c2o

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Single point energy calculations (select basis sets)

		aug-cc-pVTZ
Moller Plesset perturbation	MP2FC// MP2FC/6-31G*	c1e
Coupled Cluster	CCSD// MP2FC/6-31G*	c1e
	CCSD(T)// MP2FC/6-31G*	c1e

For descriptions of the methods (AM1, HF, MP2, ...) and basis sets (3-21G, 3-21G*, 6-31G, ...) see the glossary in section I.C. Predefined means the basis set used is determined by the method.