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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: CCSD/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at CCSD/6-311+G(3df,2p)
 hartrees
Energy at 0K-132.499798
Energy at 298.15K-132.502388
HF Energy-131.971957
Nuclear repulsion energy58.469651
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 CCSD/6-311+G(3df,2p)
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 3085 2909 2.99      
2 A1 2362 2228 2.87      
3 A1 1436 1355 0.67      
4 A1 932 879 2.09      
5 E 3168 2988 1.12      
5 E 3168 2988 1.12      
6 E 1504 1418 9.80      
6 E 1504 1418 9.80      
7 E 1076 1014 1.06      
7 E 1076 1014 1.06      
8 E 373 352 0.84      
8 E 373 352 0.84      

Unscaled Zero Point Vibrational Energy (zpe) 10028.0 cm-1
Scaled (by 0.9431) Zero Point Vibrational Energy (zpe) 9457.4 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 CCSD/6-311+G(3df,2p)
ABC
5.32258 0.30687 0.30687

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/6-311+G(3df,2p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.182
C2 0.000 0.000 0.282
N3 0.000 0.000 1.436
H4 0.000 1.023 -1.552
H5 0.886 -0.512 -1.552
H6 -0.886 -0.512 -1.552

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46432.61781.08821.08821.0882
C21.46431.15352.10032.10032.1003
N32.61781.15353.15803.15803.1580
H41.08822.10033.15801.77271.7727
H51.08822.10033.15801.77271.7727
H61.08822.10033.15801.77271.7727

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 109.860
C2 C1 H5 109.860 C2 C1 H6 109.860
H4 C1 H5 109.079 H4 C1 H6 109.079
H5 C1 H6 109.079
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability