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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: MP4/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP4/daug-cc-pVTZ
 hartrees
Energy at 0K-132.542988
Energy at 298.15K-132.545517
HF Energy-131.972123
Nuclear repulsion energy58.080301
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 MP4/daug-cc-pVTZ
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 3059 3059        
2 A1 2188 2188        
3 A1 1412 1412        
4 A1 916 916        
5 E 3146 3146        
5 E 3146 3146        
6 E 1490 1490        
6 E 1490 1490        
7 E 1061 1061        
7 E 1061 1061        
8 E 352 352        
8 E 352 352        

Unscaled Zero Point Vibrational Energy (zpe) 9836.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9836.4 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 MP4/daug-cc-pVTZ
ABC
5.30015 0.30313 0.30313

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/daug-cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.188
C2 0.000 0.000 0.277
N3 0.000 0.000 1.448
H4 0.000 1.026 -1.558
H5 0.888 -0.513 -1.558
H6 -0.888 -0.513 -1.558

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46512.63571.09031.09031.0903
C21.46511.17062.10212.10212.1021
N32.63571.17063.17583.17583.1758
H41.09032.10213.17581.77651.7765
H51.09032.10213.17581.77651.7765
H61.09032.10213.17581.77651.7765

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 109.831
C2 C1 H5 109.831 C2 C1 H6 109.831
H4 C1 H5 109.109 H4 C1 H6 109.109
H5 C1 H6 109.109
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability