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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: MP3/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP3/TZVP
 hartrees
Energy at 0K-132.425374
Energy at 298.15K-132.427962
HF Energy-131.970525
Nuclear repulsion energy58.634775
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 MP3/TZVP
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 3122 2920 4.22      
2 A1 2457 2297 3.54      
3 A1 1451 1357 1.08      
4 A1 948 886 2.90      
5 E 3208 3000 1.91      
5 E 3208 3000 1.91      
6 E 1508 1411 10.63      
6 E 1508 1411 10.63      
7 E 1087 1016 0.45      
7 E 1087 1016 0.45      
8 E 369 345 0.40      
8 E 369 345 0.40      

Unscaled Zero Point Vibrational Energy (zpe) 10160.2 cm-1
Scaled (by 0.9352) Zero Point Vibrational Energy (zpe) 9501.8 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 MP3/TZVP
ABC
5.32847 0.30866 0.30866

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/TZVP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.179
C2 0.000 0.000 0.283
N3 0.000 0.000 1.431
H4 0.000 1.023 -1.547
H5 0.886 -0.511 -1.547
H6 -0.886 -0.511 -1.547

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46172.60981.08731.08731.0873
C21.46171.14812.09682.09682.0968
N32.60981.14813.14923.14923.1492
H41.08732.09683.14921.77181.7718
H51.08732.09683.14921.77181.7718
H61.08732.09683.14921.77181.7718

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 109.817
C2 C1 H5 109.817 C2 C1 H6 109.817
H4 C1 H5 109.123 H4 C1 H6 109.123
H5 C1 H6 109.123
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability