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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: MP4=FULL/daug-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 MP4=FULL/daug-cc-pVTZ
 hartrees
Energy at 0K-132.598858
Energy at 298.15K-132.601401
HF Energy-131.973284
Nuclear repulsion energy58.330286
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 MP4=FULL/daug-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 3080 3080        
2 A1 2221 2221        
3 A1 1422 1422        
4 A1 928 928        
5 E 3146 3146        
5 E 3146 3146        
6 E 1504 1504        
6 E 1504 1504        
7 E 1074 1074        
7 E 1074 1074        
8 E 355 355        
8 E 354 354        

Unscaled Zero Point Vibrational Energy (zpe) 9903.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9903.5 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 MP4=FULL/daug-cc-pVTZ
ABC
5.33384 0.30592 0.30592

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/daug-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 0.276
N3 0.000 0.000 1.441
H4 0.000 1.022 -1.552
H5 0.885 -0.511 -1.552
H6 -0.885 -0.511 -1.552

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45782.62301.08751.08751.0875
C21.45781.16522.09482.09482.0948
N32.62301.16523.16333.16333.1633
H41.08752.09483.16331.77091.7709
H51.08752.09483.16331.77091.7709
H61.08752.09483.16331.77091.7709

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 109.017 H4 C1 H6 109.017
H5 C1 H6 109.017
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability