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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: CCD/TZVP

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/TZVP
 hartrees
Energy at 0K-132.429685
Energy at 298.15K-132.432263
HF Energy-131.969901
Nuclear repulsion energy58.488131
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/TZVP
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 3103 2941 5.30      
2 A1 2394 2269 1.09      
3 A1 1451 1375 0.85      
4 A1 939 890 2.78      
5 E 3188 3022 2.54      
5 E 3188 3022 2.54      
6 E 1508 1430 10.09      
6 E 1508 1430 10.09      
7 E 1086 1030 0.39      
7 E 1086 1030 0.39      
8 E 365 346 0.45      
8 E 365 346 0.45      

Unscaled Zero Point Vibrational Energy (zpe) 10090.1 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 9565.4 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/TZVP
ABC
5.31687 0.30716 0.30716

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/TZVP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.181
C2 0.000 0.000 0.282
N3 0.000 0.000 1.435
H4 0.000 1.024 -1.551
H5 0.887 -0.512 -1.551
H6 -0.887 -0.512 -1.551

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46352.61651.08871.08871.0887
C21.46351.15302.09992.09992.0999
N32.61651.15303.15693.15693.1569
H41.08872.09993.15691.77371.7737
H51.08872.09993.15691.77371.7737
H61.08872.09993.15691.77371.7737

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 109.852
C2 C1 H5 109.852 C2 C1 H6 109.852
H4 C1 H5 109.087 H4 C1 H6 109.087
H5 C1 H6 109.088
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability