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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: MP2=FULL/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-132.549762
Energy at 298.15K-132.552348
HF Energy-131.973140
Nuclear repulsion energy58.506680
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/aug-cc-pVTZ
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 3111 2960 2.00 185.14 0.00 0.01
2 A1 2240 2131 0.37 52.90 0.15 0.26
3 A1 1420 1351 1.51 3.63 0.44 0.61
4 A1 947 901 0.86 6.02 0.06 0.11
5 E 3189 3034 0.09 50.45 0.75 0.86
5 E 3189 3034 0.09 50.45 0.75 0.86
6 E 1504 1431 10.51 4.77 0.75 0.86
6 E 1504 1431 10.51 4.77 0.75 0.86
7 E 1071 1019 1.63 0.08 0.75 0.86
7 E 1071 1019 1.63 0.08 0.75 0.86
8 E 369 351 0.56 1.10 0.75 0.86
8 E 369 351 0.56 1.10 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9992.3 cm-1
Scaled (by 0.9514) Zero Point Vibrational Energy (zpe) 9506.6 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 MP2=FULL/aug-cc-pVTZ
ABC
5.36879 0.30811 0.30811

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.176
C2 0.000 0.000 0.273
N3 0.000 0.000 1.437
H4 0.000 1.019 -1.548
H5 0.883 -0.510 -1.548
H6 -0.883 -0.510 -1.548

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.44872.61331.08481.08481.0848
C21.44871.16462.08652.08652.0865
N32.61331.16463.15443.15443.1544
H41.08482.08653.15441.76511.7651
H51.08482.08653.15441.76511.7651
H61.08482.08653.15441.76511.7651

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 110.054
C2 C1 H5 110.054 C2 C1 H6 110.054
H4 C1 H5 108.883 H4 C1 H6 108.883
H5 C1 H6 108.883
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability