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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: MP2=FULL/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-132.547904
Energy at 298.15K-132.550474
HF Energy-131.976206
Nuclear repulsion energy58.390609
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/Def2TZVPP
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 3103 3103 2.13 165.46 0.00 0.00
2 A1 2231 2231 0.04 40.56 0.22 0.36
3 A1 1424 1424 1.62 3.46 0.55 0.71
4 A1 939 939 0.99 5.03 0.09 0.17
5 E 3197 3197 0.13 52.80 0.75 0.86
5 E 3197 3197 0.13 52.80 0.75 0.86
6 E 1496 1496 10.47 6.67 0.75 0.86
6 E 1496 1496 10.47 6.67 0.75 0.86
7 E 1068 1068 1.52 0.00 0.75 0.86
7 E 1068 1068 1.52 0.00 0.75 0.86
8 E 366 366 0.42 2.24 0.75 0.86
8 E 366 366 0.42 2.24 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9975.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9975.6 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/Def2TZVPP
ABC
5.36228 0.30650 0.30650

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/Def2TZVPP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.180
C2 0.000 0.000 0.275
N3 0.000 0.000 1.441
H4 0.000 1.020 -1.550
H5 0.883 -0.510 -1.550
H6 -0.883 -0.510 -1.550

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45512.62101.08461.08461.0846
C21.45511.16592.09022.09022.0902
N32.62101.16593.15963.15963.1596
H41.08462.09023.15961.76621.7662
H51.08462.09023.15961.76621.7662
H61.08462.09023.15961.76621.7662

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 109.920
C2 C1 H5 109.920 C2 C1 H6 109.920
H4 C1 H5 109.019 H4 C1 H6 109.019
H5 C1 H6 109.019
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability