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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: MP2=FULL/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 MP2=FULL/6-31+G**
 hartrees
Energy at 0K-132.382442
Energy at 298.15K-132.384968
HF Energy-131.931206
Nuclear repulsion energy58.003430
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 MP2=FULL/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 3146 2954 3.99      
2 A1 2225 2089 0.00      
3 A1 1458 1369 1.64      
4 A1 941 883 1.68      
5 E 3249 3051 0.77      
5 E 3249 3051 0.77      
6 E 1525 1432 10.80      
6 E 1525 1432 10.80      
7 E 1085 1019 0.80      
7 E 1085 1019 0.80      
8 E 343 323 0.12      
8 E 343 323 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 10086.3 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 9473.1 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 MP2=FULL/6-31+G**
ABC
5.34228 0.30232 0.30232

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/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 0.273
N3 0.000 0.000 1.452
H4 0.000 1.022 -1.558
H5 0.885 -0.511 -1.558
H6 -0.885 -0.511 -1.558

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46102.64041.08661.08661.0866
C21.46101.17942.09692.09692.0969
N32.64041.17943.17913.17913.1791
H41.08662.09693.17911.76951.7695
H51.08662.09693.17911.76951.7695
H61.08662.09693.17911.76951.7695

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 109.916
C2 C1 H5 109.916 C2 C1 H6 109.916
H4 C1 H5 109.023 H4 C1 H6 109.023
H5 C1 H6 109.023
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability