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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: MP4/aug-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/aug-cc-pVTZ
 hartrees
Energy at 0K-132.541974
Energy at 298.15K-132.544516
HF Energy-131.971918
Nuclear repulsion energy58.084758
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/aug-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 2977        
2 A1 2189 2130        
3 A1 1413 1375        
4 A1 917 892        
5 E 3146 3061        
5 E 3145 3061        
6 E 1490 1450        
6 E 1490 1450        
7 E 1061 1032        
7 E 1060 1032        
8 E 354 344        
8 E 354 344        

Unscaled Zero Point Vibrational Energy (zpe) 9838.1 cm-1
Scaled (by 0.9732) Zero Point Vibrational Energy (zpe) 9574.5 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/aug-cc-pVTZ
ABC
5.30160 0.30320 0.30320

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

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 0.277
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
C11.46462.63531.09031.09031.0903
C21.46461.17072.10202.10202.1020
N32.63531.17073.17573.17573.1757
H41.09032.10203.17571.77621.7762
H51.09032.10203.17571.77621.7762
H61.09032.10203.17571.77621.7762

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 109.853
C2 C1 H5 109.853 C2 C1 H6 109.853
H4 C1 H5 109.087 H4 C1 H6 109.087
H5 C1 H6 109.087
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability