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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: CCD/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 CCD/6-311+G(3df,2p)
 hartrees
Energy at 0K-132.495372
Energy at 298.15K-132.497971
HF Energy-131.972255
Nuclear repulsion energy58.533210
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/6-311+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 3090 2914 2.80      
2 A1 2382 2246 3.03      
3 A1 1439 1357 0.74      
4 A1 937 884 2.20      
5 E 3176 2995 0.92      
5 E 3176 2995 0.92      
6 E 1505 1420 9.94      
6 E 1505 1420 9.94      
7 E 1078 1017 1.17      
7 E 1078 1017 1.17      
8 E 376 355 0.87      
8 E 376 355 0.87      

Unscaled Zero Point Vibrational Energy (zpe) 10059.5 cm-1
Scaled (by 0.9431) Zero Point Vibrational Energy (zpe) 9487.1 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/6-311+G(3df,2p)
ABC
5.32698 0.30754 0.30754

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.181
C2 0.000 0.000 0.283
N3 0.000 0.000 1.434
H4 0.000 1.023 -1.551
H5 0.886 -0.512 -1.551
H6 -0.886 -0.512 -1.551

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46332.61471.08791.08791.0879
C21.46331.15132.09942.09942.0994
N32.61471.15133.15513.15513.1551
H41.08792.09943.15511.77201.7720
H51.08792.09943.15511.77201.7720
H61.08792.09943.15511.77201.7720

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 109.880
C2 C1 H5 109.880 C2 C1 H6 109.880
H4 C1 H5 109.059 H4 C1 H6 109.059
H5 C1 H6 109.059
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability