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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: MP4=FULL/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-132.409518
Energy at 298.15K-132.412062
HF Energy-131.932777
Nuclear repulsion energy57.527852
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/cc-pVDZ
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 3081 2974        
2 A1 2201 2124        
3 A1 1404 1355        
4 A1 926 893        
5 E 3180 3069        
5 E 3180 3069        
6 E 1472 1421        
6 E 1472 1421        
7 E 1052 1015        
7 E 1052 1015        
8 E 357 345        
8 E 357 345        

Unscaled Zero Point Vibrational Energy (zpe) 9867.2 cm-1
Scaled (by 0.9651) Zero Point Vibrational Energy (zpe) 9522.9 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/cc-pVDZ
ABC
5.19117 0.29772 0.29772

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.197
C2 0.000 0.000 0.278
N3 0.000 0.000 1.462
H4 0.000 1.036 -1.573
H5 0.898 -0.518 -1.573
H6 -0.898 -0.518 -1.573

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.47562.65901.10241.10241.1024
C21.47561.18342.12182.12182.1218
N32.65901.18343.20693.20693.2069
H41.10242.12183.20691.79501.7950
H51.10242.12183.20691.79501.7950
H61.10242.12183.20691.79501.7950

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 109.933
C2 C1 H5 109.933 C2 C1 H6 109.933
H4 C1 H5 109.005 H4 C1 H6 109.005
H5 C1 H6 109.005
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability