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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: CID/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at CID/6-31G*
 hartrees
Energy at 0K-132.307955
Energy at 298.15K-132.310576
HF Energy-131.926423
Nuclear repulsion energy58.448493
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CID/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3166 2924 2.65      
2 A1 2475 2286 4.09      
3 A1 1498 1384 2.80      
4 A1 965 891 4.19      
5 E 3253 3005 1.53      
5 E 3253 3005 1.53      
6 E 1557 1438 10.89      
6 E 1557 1438 10.89      
7 E 1117 1031 2.19      
7 E 1117 1031 2.19      
8 E 385 355 0.89      
8 E 385 355 0.89      

Unscaled Zero Point Vibrational Energy (zpe) 10362.3 cm-1
Scaled (by 0.9237) Zero Point Vibrational Energy (zpe) 9571.6 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CID/6-31G*
ABC
5.32524 0.30664 0.30664

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/6-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.182
C2 0.000 0.000 0.282
N3 0.000 0.000 1.437
H4 0.000 1.023 -1.553
H5 0.886 -0.512 -1.553
H6 -0.886 -0.512 -1.553

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46422.61851.08861.08861.0886
C21.46421.15432.10162.10162.1016
N32.61851.15433.16023.16023.1602
H41.08862.10163.16021.77231.7723
H51.08862.10163.16021.77231.7723
H61.08862.10163.16021.77231.7723

picture of Acetonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 180.000 C2 C1 H4 109.951
C2 C1 H5 109.951 C2 C1 H6 109.951
H4 C1 H5 108.987 H4 C1 H6 108.987
H5 C1 H6 108.987
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability