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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-31G**
 hartrees
Energy at 0K-132.606428
Energy at 298.15K-132.609042
HF Energy-132.606428
Nuclear repulsion energy58.457973
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 HSEh1PBE/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3083 2942 1.89 139.09 0.00 0.00
2 A1 2409 2299 10.10 50.37 0.30 0.46
3 A1 1415 1350 4.48 12.02 0.62 0.77
4 A1 954 911 1.52 3.59 0.20 0.33
5 E 3173 3028 0.49 67.41 0.75 0.86
5 E 3173 3028 0.49 67.41 0.75 0.86
6 E 1479 1412 11.48 16.30 0.75 0.86
6 E 1479 1412 11.48 16.30 0.75 0.86
7 E 1058 1010 4.03 0.04 0.75 0.86
7 E 1058 1010 4.03 0.04 0.75 0.86
8 E 391 373 0.40 4.00 0.75 0.86
8 E 391 373 0.40 4.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10031.3 cm-1
Scaled (by 0.9543) Zero Point Vibrational Energy (zpe) 9572.9 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 HSEh1PBE/6-31G**
ABC
5.30042 0.30775 0.30775

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.176
C2 0.000 0.000 0.278
N3 0.000 0.000 1.436
H4 0.000 1.026 -1.554
H5 0.888 -0.513 -1.554
H6 -0.888 -0.513 -1.554

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45402.61251.09281.09281.0928
C21.45401.15852.09892.09892.0989
N32.61251.15853.16083.16083.1608
H41.09282.09893.16081.77641.7764
H51.09282.09893.16081.77641.7764
H61.09282.09893.16081.77641.7764

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 110.197
C2 C1 H5 110.197 C2 C1 H6 110.197
H4 C1 H5 108.736 H4 C1 H6 108.736
H5 C1 H6 108.736
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.452      
2 C 0.334      
3 N -0.464      
4 H 0.194      
5 H 0.194      
6 H 0.194      


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 -3.870 3.870
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.211 0.000 0.000
y 0.000 -17.211 0.000
z 0.000 0.000 -20.212
Traceless
 xyz
x 1.501 0.000 0.000
y 0.000 1.501 0.000
z 0.000 0.000 -3.001
Polar
3z2-r2-6.002
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 2.612 0.000 0.000
y 0.000 2.612 0.000
z 0.000 0.000 5.092


<r2> (average value of r2) Å2
<r2> 44.974
(<r2>)1/2 6.706