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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: MP4/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP4/6-311+G(3df,2p)
 hartrees
Energy at 0K-132.530034
Energy at 298.15K-132.532577
HF Energy-131.969110
Nuclear repulsion energy58.098669
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 MP4/6-311+G(3df,2p)
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 3062 2889        
2 A1 2193 2070        
3 A1 1415 1336        
4 A1 915 864        
5 E 3149 2972        
5 E 3149 2972        
6 E 1489 1406        
6 E 1489 1405        
7 E 1059 999        
7 E 1059 999        
8 E 356 336        
8 E 356 336        

Unscaled Zero Point Vibrational Energy (zpe) 9845.6 cm-1
Scaled (by 0.9438) Zero Point Vibrational Energy (zpe) 9292.3 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 MP4/6-311+G(3df,2p)
ABC
5.30521 0.30328 0.30328

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-311+G(3df,2p)

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 0.278
N3 0.000 0.000 1.447
H4 0.000 1.025 -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
C11.46512.63471.09031.09031.0903
C21.46511.16962.10302.10302.1030
N32.63471.16963.17593.17593.1759
H41.09032.10303.17591.77561.7756
H51.09032.10303.17591.77561.7756
H61.09032.10303.17591.77561.7756

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 109.902
C2 C1 H5 109.902 C2 C1 H6 109.902
H4 C1 H5 109.037 H4 C1 H6 109.037
H5 C1 H6 109.037
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability