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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: MP4=FULL/6-31G*

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/6-31G*
 hartrees
Energy at 0K-132.388727
Energy at 298.15K-132.391269
HF Energy-131.922273
Nuclear repulsion energy57.819404
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/6-31G*
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 3081 2963        
2 A1 2227 2141        
3 A1 1456 1400        
4 A1 931 896        
5 E 3169 3047        
5 E 3169 3047        
6 E 1521 1463        
6 E 1521 1463        
7 E 1082 1041        
7 E 1082 1040        
8 E 356 342        
8 E 356 342        

Unscaled Zero Point Vibrational Energy (zpe) 9975.3 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 9592.2 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 MP4=FULL/6-31G*
ABC
5.26595 0.30064 0.30064

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.191
C2 0.000 0.000 0.277
N3 0.000 0.000 1.455
H4 0.000 1.029 -1.566
H5 0.891 -0.514 -1.566
H6 -0.891 -0.514 -1.566

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46742.64601.09541.09541.0954
C21.46741.17862.11072.11072.1107
N32.64601.17863.19193.19193.1919
H41.09542.11073.19191.78221.7822
H51.09542.11073.19191.78221.7822
H61.09542.11073.19191.78221.7822

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 110.051
C2 C1 H5 110.051 C2 C1 H6 110.051
H4 C1 H5 108.885 H4 C1 H6 108.885
H5 C1 H6 108.885
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability