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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: MP4=FULL/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=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-132.599687
Energy at 298.15K-132.602248
HF Energy-131.969609
Nuclear repulsion energy58.232430
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=FULL/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 3073 3073        
2 A1 2207 2207        
3 A1 1419 1419        
4 A1 925 925        
5 E 3160 3160        
5 E 3159 3159        
6 E 1492 1492        
6 E 1492 1492        
7 E 1060 1060        
7 E 1060 1060        
8 E 363 363        
8 E 362 362        

Unscaled Zero Point Vibrational Energy (zpe) 9885.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9885.6 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=FULL/6-311+G(3df,2p)
ABC
5.32591 0.30479 0.30479

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.184
C2 0.000 0.000 0.277
N3 0.000 0.000 1.444
H4 0.000 1.023 -1.556
H5 0.886 -0.512 -1.556
H6 -0.886 -0.512 -1.556

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46032.62781.08871.08871.0887
C21.46031.16742.09862.09862.0986
N32.62781.16743.16943.16943.1694
H41.08872.09863.16941.77221.7722
H51.08872.09863.16941.77221.7722
H61.08872.09863.16941.77221.7722

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 109.979
C2 C1 H5 109.979 C2 C1 H6 109.979
H4 C1 H5 108.959 H4 C1 H6 108.959
H5 C1 H6 108.959
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability