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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: MP2=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 MP2=FULL/cc-pVDZ
 hartrees
Energy at 0K-132.369723
Energy at 298.15K-132.372286
HF Energy-131.933001
Nuclear repulsion energy57.679648
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 MP2=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 3114 2959 4.03      
2 A1 2212 2102 0.30      
3 A1 1410 1340 1.00      
4 A1 943 896 1.19      
5 E 3221 3061 0.45      
5 E 3221 3061 0.45      
6 E 1479 1405 10.45      
6 E 1479 1405 10.45      
7 E 1058 1006 1.90      
7 E 1058 1006 1.90      
8 E 363 345 0.15      
8 E 363 345 0.15      

Unscaled Zero Point Vibrational Energy (zpe) 9960.5 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 9466.4 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 MP2=FULL/cc-pVDZ
ABC
5.22752 0.29951 0.29951

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.192
C2 0.000 0.000 0.275
N3 0.000 0.000 1.459
H4 0.000 1.033 -1.569
H5 0.894 -0.516 -1.569
H6 -0.894 -0.516 -1.569

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46772.65101.09921.09921.0992
C21.46771.18332.11352.11352.1135
N32.65101.18333.19873.19873.1987
H41.09922.11353.19871.78881.7888
H51.09922.11353.19871.78881.7888
H61.09922.11353.19871.78881.7888

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 110.024
C2 C1 H5 110.024 C2 C1 H6 110.024
H4 C1 H5 108.913 H4 C1 H6 108.913
H5 C1 H6 108.913
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability