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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: CCSD/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-132.502749
Energy at 298.15K-132.505342
HF Energy-131.973334
Nuclear repulsion energy58.462473
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/cc-pVTZ
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 3086 2905 3.16      
2 A1 2366 2227 2.15      
3 A1 1432 1348 0.90      
4 A1 934 879 2.09      
5 E 3169 2982 1.25      
5 E 3169 2982 1.25      
6 E 1501 1413 9.29      
6 E 1501 1413 9.29      
7 E 1076 1013 1.11      
7 E 1076 1013 1.11      
8 E 373 352 0.59      
8 E 373 352 0.59      

Unscaled Zero Point Vibrational Energy (zpe) 10028.8 cm-1
Scaled (by 0.9412) Zero Point Vibrational Energy (zpe) 9439.1 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/cc-pVTZ
ABC
5.32903 0.30677 0.30677

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/cc-pVTZ

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 -0.511 -1.552
H6 -0.886 -0.511 -1.552

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46402.61841.08761.08761.0876
C21.46401.15442.09962.09962.0996
N32.61841.15443.15823.15823.1582
H41.08762.09963.15821.77171.7717
H51.08762.09963.15821.77171.7717
H61.08762.09963.15821.77171.7717

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 109.867
C2 C1 H5 109.867 C2 C1 H6 109.867
H4 C1 H5 109.073 H4 C1 H6 109.073
H5 C1 H6 109.073
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability