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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: B2PLYP=FULLultrafine/3-21G*

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/3-21G*
 hartrees
Energy at 0K-131.847039
Energy at 298.15K 
HF Energy-131.742272
Nuclear repulsion energy58.076370
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/3-21G*
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 3091 3091 1.92 109.96 0.00 0.00
2 A1 2285 2285 0.03 27.42 0.29 0.46
3 A1 1500 1500 10.70 15.58 0.63 0.78
4 A1 917 917 2.15 3.53 0.20 0.33
5 E 3158 3158 1.73 61.42 0.75 0.86
5 E 3158 3158 1.73 61.42 0.75 0.86
6 E 1567 1567 13.40 21.83 0.75 0.86
6 E 1567 1567 13.40 21.83 0.75 0.86
7 E 1138 1138 3.75 0.02 0.75 0.86
7 E 1138 1138 3.75 0.02 0.75 0.86
8 E 446 446 0.09 3.79 0.75 0.86
8 E 446 446 0.09 3.79 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10205.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10205.0 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/3-21G*
ABC
5.30475 0.30331 0.30331

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/3-21G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.185
C2 0.000 0.000 0.277
N3 0.000 0.000 1.448
H4 0.000 1.025 -1.564
H5 0.888 -0.513 -1.564
H6 -0.888 -0.513 -1.564

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46172.63281.09301.09301.0930
C21.46171.17112.10692.10692.1069
N32.63281.17113.18143.18143.1814
H41.09302.10693.18141.77571.7757
H51.09302.10693.18141.77571.7757
H61.09302.10693.18141.77571.7757

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 110.285
C2 C1 H5 110.285 C2 C1 H6 110.285
H4 C1 H5 108.646 H4 C1 H6 108.646
H5 C1 H6 108.646
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability