return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: B2PLYP=FULL/aug-cc-pVDZ

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=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-132.640396
Energy at 298.15K-132.642956
HF Energy-132.488826
Nuclear repulsion energy58.047933
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=FULL/aug-cc-pVDZ
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 3077 2959 3.59 193.35 0.00 0.01
2 A1 2286 2198 3.61 66.07 0.17 0.29
3 A1 1393 1340 0.98 4.66 0.41 0.58
4 A1 932 897 1.52 6.38 0.07 0.13
5 E 3164 3043 0.98 57.01 0.75 0.86
5 E 3164 3043 0.98 57.01 0.75 0.86
6 E 1459 1404 10.06 5.28 0.75 0.86
6 E 1459 1404 10.06 5.28 0.75 0.86
7 E 1048 1008 1.34 0.08 0.75 0.86
7 E 1048 1008 1.34 0.08 0.75 0.86
8 E 363 350 0.46 1.58 0.75 0.86
8 E 363 350 0.46 1.58 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9878.2 cm-1
Scaled (by 0.9618) Zero Point Vibrational Energy (zpe) 9500.9 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=FULL/aug-cc-pVDZ
ABC
5.24818 0.30323 0.30323

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/aug-cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.186
C2 0.000 0.000 0.278
N3 0.000 0.000 1.447
H4 0.000 1.031 -1.560
H5 0.893 -0.515 -1.560
H6 -0.893 -0.515 -1.560

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46482.63371.09651.09651.0965
C21.46481.16892.10802.10802.1080
N32.63371.16893.17943.17943.1794
H41.09652.10803.17941.78531.7853
H51.09652.10803.17941.78531.7853
H61.09652.10803.17941.78531.7853

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 109.943
C2 C1 H5 109.943 C2 C1 H6 109.943
H4 C1 H5 108.996 H4 C1 H6 108.996
H5 C1 H6 108.996
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability