return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: MP3=FULL/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP3=FULL/6-311G*
 hartrees
Energy at 0K-132.451227
Energy at 298.15K-132.453848
HF Energy-131.954693
Nuclear repulsion energy58.486263
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 MP3=FULL/6-311G*
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 3107 3107 2.92      
2 A1 2445 2445 3.29      
3 A1 1459 1459 4.96      
4 A1 951 951 3.44      
5 E 3192 3192 1.47      
5 E 3192 3192 1.47      
6 E 1517 1517 13.26      
6 E 1517 1517 13.26      
7 E 1092 1092 2.28      
7 E 1092 1092 2.28      
8 E 386 386 0.28      
8 E 386 386 0.28      

Unscaled Zero Point Vibrational Energy (zpe) 10169.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10169.2 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 MP3=FULL/6-311G*
ABC
5.30736 0.30715 0.30715

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-311G*

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 0.283
N3 0.000 0.000 1.435
H4 0.000 1.025 -1.553
H5 0.888 -0.512 -1.553
H6 -0.888 -0.512 -1.553

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46432.61561.09051.09051.0905
C21.46431.15132.10342.10342.1034
N32.61561.15133.15903.15903.1590
H41.09052.10343.15901.77531.7753
H51.09052.10343.15901.77531.7753
H61.09052.10343.15901.77531.7753

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 109.972
C2 C1 H5 109.972 C2 C1 H6 109.972
H4 C1 H5 108.966 H4 C1 H6 108.966
H5 C1 H6 108.966
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability