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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: MP2/6-31+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 MP2/6-31+G**
 hartrees
Energy at 0K-132.368484
Energy at 298.15K-132.370987
HF Energy-131.930921
Nuclear repulsion energy57.933983
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 MP2/6-31+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 3143 2956 4.09      
2 A1 2218 2086 0.00      
3 A1 1455 1369 1.48      
4 A1 939 883 1.74      
5 E 3245 3052 0.85      
5 E 3245 3052 0.85      
6 E 1522 1432 10.65      
6 E 1522 1432 10.65      
7 E 1083 1018 0.72      
7 E 1083 1018 0.72      
8 E 334 314 0.12      
8 E 334 314 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 10060.3 cm-1
Scaled (by 0.9406) Zero Point Vibrational Energy (zpe) 9462.7 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 MP2/6-31+G**
ABC
5.32996 0.30157 0.30157

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31+G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.190
C2 0.000 0.000 0.273
N3 0.000 0.000 1.454
H4 0.000 1.023 -1.560
H5 0.886 -0.511 -1.560
H6 -0.886 -0.511 -1.560

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46312.64381.08771.08771.0877
C21.46311.18072.09932.09932.0993
N32.64381.18073.18283.18283.1828
H41.08772.09933.18281.77151.7715
H51.08772.09933.18281.77151.7715
H61.08772.09933.18281.77151.7715

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 109.899
C2 C1 H5 109.899 C2 C1 H6 109.899
H4 C1 H5 109.040 H4 C1 H6 109.040
H5 C1 H6 109.040
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability