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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: MP3=FULL/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 MP3=FULL/6-31G**
 hartrees
Energy at 0K-132.385188
Energy at 298.15K-132.387791
HF Energy-131.931050
Nuclear repulsion energy58.415923
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 MP3=FULL/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 3166 3.22      
2 A1 2462 2462 3.16      
3 A1 1477 1477 1.30      
4 A1 959 959 3.08      
5 E 3259 3259 1.92      
5 E 3259 3259 1.92      
6 E 1543 1543 9.04      
6 E 1543 1543 9.04      
7 E 1099 1099 1.35      
7 E 1099 1099 1.35      
8 E 376 376 0.77      
8 E 376 376 0.77      

Unscaled Zero Point Vibrational Energy (zpe) 10309.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10309.2 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 MP3=FULL/6-31G**
ABC
5.35442 0.30612 0.30612

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.183
C2 0.000 0.000 0.281
N3 0.000 0.000 1.439
H4 0.000 1.020 -1.552
H5 0.884 -0.510 -1.552
H6 -0.884 -0.510 -1.552

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46402.62191.08521.08521.0852
C21.46401.15792.09812.09812.0981
N32.62191.15793.16043.16043.1604
H41.08522.09813.16041.76751.7675
H51.08522.09813.16041.76751.7675
H61.08522.09813.16041.76751.7675

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 109.896
C2 C1 H5 109.896 C2 C1 H6 109.896
H4 C1 H5 109.044 H4 C1 H6 109.044
H5 C1 H6 109.044
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability