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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: CCD/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 CCD/6-31+G**
 hartrees
Energy at 0K-132.382545
Energy at 298.15K-132.385084
HF Energy-131.933863
Nuclear repulsion energy58.179752
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 CCD/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 3136 2955 5.13      
2 A1 2380 2243 1.51      
3 A1 1466 1382 0.90      
4 A1 943 889 3.12      
5 E 3229 3043 2.14      
5 E 3229 3043 2.14      
6 E 1527 1439 9.67      
6 E 1527 1439 9.67      
7 E 1090 1027 0.44      
7 E 1090 1027 0.44      
8 E 348 328 0.28      
8 E 348 328 0.28      

Unscaled Zero Point Vibrational Energy (zpe) 10156.4 cm-1
Scaled (by 0.9423) Zero Point Vibrational Energy (zpe) 9570.4 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 CCD/6-31+G**
ABC
5.32074 0.30367 0.30367

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.188
C2 0.000 0.000 0.281
N3 0.000 0.000 1.445
H4 0.000 1.024 -1.557
H5 0.887 -0.512 -1.557
H6 -0.887 -0.512 -1.557

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46872.63321.08811.08811.0881
C21.46871.16442.10342.10342.1034
N32.63321.16443.17173.17173.1717
H41.08812.10343.17171.77301.7730
H51.08812.10343.17171.77301.7730
H61.08812.10343.17171.77301.7730

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 109.813
C2 C1 H5 109.813 C2 C1 H6 109.813
H4 C1 H5 109.127 H4 C1 H6 109.127
H5 C1 H6 109.127
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability