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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: CCD/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 CCD/6-31G**
 hartrees
Energy at 0K-132.376309
Energy at 298.15K-132.378884
HF Energy-131.930236
Nuclear repulsion energy58.210346
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 CCD/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 3142 2946 4.31      
2 A1 2393 2244 0.67      
3 A1 1472 1380 0.95      
4 A1 948 889 2.92      
5 E 3235 3033 2.77      
5 E 3235 3033 2.77      
6 E 1538 1442 8.38      
6 E 1538 1442 8.38      
7 E 1096 1027 1.12      
7 E 1096 1027 1.12      
8 E 364 342 0.79      
8 E 364 342 0.79      

Unscaled Zero Point Vibrational Energy (zpe) 10210.9 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 9573.7 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 CCD/6-31G**
ABC
5.33164 0.30396 0.30396

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.187
C2 0.000 0.000 0.281
N3 0.000 0.000 1.444
H4 0.000 1.023 -1.558
H5 0.886 -0.511 -1.558
H6 -0.886 -0.511 -1.558

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46772.63141.08781.08781.0878
C21.46771.16372.10372.10372.1037
N32.63141.16373.17153.17153.1715
H41.08782.10373.17151.77121.7712
H51.08782.10373.17151.77121.7712
H61.08782.10373.17151.77121.7712

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 109.928
C2 C1 H5 109.928 C2 C1 H6 109.928
H4 C1 H5 109.011 H4 C1 H6 109.011
H5 C1 H6 109.011
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability