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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: B2PLYP=FULLultrafine/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B2PLYP=FULLultrafine/6-31+G**
 hartrees
Energy at 0K-132.633138
Energy at 298.15K 
HF Energy-132.482713
Nuclear repulsion energy58.187927
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 B2PLYP=FULLultrafine/6-31+G**
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 3099 3099 3.86 161.37 0.00 0.00
2 A1 2305 2305 3.81 58.43 0.21 0.35
3 A1 1437 1437 1.96 8.36 0.68 0.81
4 A1 933 933 1.96 4.52 0.13 0.22
5 E 3186 3186 1.04 66.60 0.75 0.86
5 E 3186 3186 1.04 66.60 0.75 0.86
6 E 1503 1503 11.68 10.35 0.75 0.86
6 E 1503 1503 11.68 10.35 0.75 0.86
7 E 1074 1074 1.40 0.01 0.75 0.86
7 E 1074 1074 1.40 0.01 0.75 0.86
8 E 365 365 0.17 4.56 0.75 0.86
8 E 365 365 0.17 4.56 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10015.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10015.3 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 B2PLYP=FULLultrafine/6-31+G**
ABC
5.31693 0.30431 0.30431

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-31+G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.184
C2 0.000 0.000 0.277
N3 0.000 0.000 1.445
H4 0.000 1.024 -1.558
H5 0.887 -0.512 -1.558
H6 -0.887 -0.512 -1.558

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46192.62951.08991.08991.0899
C21.46191.16772.10142.10142.1014
N32.62951.16773.17253.17253.1725
H41.08992.10143.17251.77371.7737
H51.08992.10143.17251.77371.7737
H61.08992.10143.17251.77371.7737

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 110.021
C2 C1 H5 110.021 C2 C1 H6 110.021
H4 C1 H5 108.916 H4 C1 H6 108.916
H5 C1 H6 108.916
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability