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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: HF/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 HF/6-311G**
 hartrees
Energy at 0K-131.960840
Energy at 298.15K-131.963575
HF Energy-131.960840
Nuclear repulsion energy59.057281
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 HF/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 3200 2908 5.57 144.90 0.00 0.00
2 A1 2603 2365 14.17 46.98 0.25 0.40
3 A1 1533 1393 0.51 4.18 0.70 0.82
4 A1 966 877 7.02 4.27 0.17 0.29
5 E 3279 2979 4.42 64.02 0.75 0.86
5 E 3279 2979 4.42 64.02 0.75 0.86
6 E 1593 1448 11.14 9.97 0.75 0.86
6 E 1593 1448 11.14 9.97 0.75 0.86
7 E 1160 1054 1.38 0.00 0.75 0.86
7 E 1160 1054 1.38 0.00 0.75 0.86
8 E 430 390 1.08 4.84 0.75 0.86
8 E 430 390 1.08 4.84 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10612.3 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 9641.2 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 HF/6-311G**
ABC
5.37128 0.31219 0.31219

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.175
C2 0.000 0.000 0.290
N3 0.000 0.000 1.419
H4 0.000 1.019 -1.540
H5 0.882 -0.509 -1.540
H6 -0.882 -0.509 -1.540

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46502.59401.08231.08231.0823
C21.46501.12902.09462.09462.0946
N32.59401.12903.12953.12953.1295
H41.08232.09463.12951.76471.7647
H51.08232.09463.12951.76471.7647
H61.08232.09463.12951.76471.7647

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 109.713
C2 C1 H5 109.713 C2 C1 H6 109.713
H4 C1 H5 109.228 H4 C1 H6 109.228
H5 C1 H6 109.228
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.165      
2 C 0.067      
3 N -0.340      
4 H 0.146      
5 H 0.146      
6 H 0.146      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -4.094 4.094
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.595 0.000 0.000
y 0.000 -17.595 0.000
z 0.000 0.000 -20.990
Traceless
 xyz
x 1.697 0.000 0.000
y 0.000 1.697 0.000
z 0.000 0.000 -3.395
Polar
3z2-r2-6.789
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.690 0.000 0.000
y 0.000 2.690 0.000
z 0.000 0.000 4.911


<r2> (average value of r2) Å2
<r2> 44.809
(<r2>)1/2 6.694