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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: CCD/6-31G*

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/6-31G*
 hartrees
Energy at 0K-132.352414
Energy at 298.15K-132.354980
HF Energy-131.925023
Nuclear repulsion energy58.124280
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/6-31G*
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 3102 2936 3.23      
2 A1 2391 2263 0.91      
3 A1 1468 1389 3.11      
4 A1 947 897 3.14      
5 E 3188 3017 1.90      
5 E 3188 3017 1.90      
6 E 1528 1446 10.61      
6 E 1528 1446 10.61      
7 E 1093 1034 2.03      
7 E 1093 1034 2.03      
8 E 364 344 0.69      
8 E 364 344 0.69      

Unscaled Zero Point Vibrational Energy (zpe) 10126.5 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 9584.7 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/6-31G*
ABC
5.27397 0.30350 0.30350

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.187
C2 0.000 0.000 0.282
N3 0.000 0.000 1.445
H4 0.000 1.029 -1.560
H5 0.891 -0.514 -1.560
H6 -0.891 -0.514 -1.560

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46932.63181.09401.09401.0940
C21.46931.16262.10972.10972.1097
N32.63181.16263.17583.17583.1758
H41.09402.10973.17581.78151.7815
H51.09402.10973.17581.78151.7815
H61.09402.10973.17581.78151.7815

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 109.922
C2 C1 H5 109.922 C2 C1 H6 109.922
H4 C1 H5 109.016 H4 C1 H6 109.016
H5 C1 H6 109.016
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability