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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: PBE1PBE/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 PBE1PBE/6-311G*
 hartrees
Energy at 0K-132.620641
Energy at 298.15K-132.623267
HF Energy-132.620641
Nuclear repulsion energy58.665930
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 PBE1PBE/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 3077 2949 3.16 143.37 0.00 0.00
2 A1 2400 2300 10.14 55.60 0.27 0.43
3 A1 1421 1362 5.98 8.95 0.66 0.80
4 A1 954 914 1.67 3.45 0.15 0.26
5 E 3158 3027 1.59 66.35 0.75 0.86
5 E 3158 3027 1.59 66.35 0.75 0.86
6 E 1488 1426 13.34 11.32 0.75 0.86
6 E 1488 1426 13.34 11.32 0.75 0.86
7 E 1067 1023 3.82 0.01 0.75 0.86
7 E 1067 1023 3.82 0.01 0.75 0.86
8 E 394 378 0.20 3.75 0.75 0.86
8 E 394 378 0.20 3.75 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10032.6 cm-1
Scaled (by 0.9585) Zero Point Vibrational Energy (zpe) 9616.2 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 PBE1PBE/6-311G*
ABC
5.32015 0.30995 0.30995

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-311G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.172
C2 0.000 0.000 0.279
N3 0.000 0.000 1.430
H4 0.000 1.024 -1.551
H5 0.887 -0.512 -1.551
H6 -0.887 -0.512 -1.551

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45042.60191.09181.09181.0918
C21.45041.15152.09672.09672.0967
N32.60191.15153.15223.15223.1522
H41.09182.09673.15221.77311.7731
H51.09182.09673.15221.77311.7731
H61.09182.09673.15221.77311.7731

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 110.334
C2 C1 H5 110.334 C2 C1 H6 110.334
H4 C1 H5 108.595 H4 C1 H6 108.595
H5 C1 H6 108.595
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.693      
2 C 0.135      
3 N -0.276      
4 H 0.278      
5 H 0.278      
6 H 0.278      


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 -3.897 3.897
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.451 0.000 0.000
y 0.000 -17.451 0.000
z 0.000 0.000 -20.533
Traceless
 xyz
x 1.541 0.000 0.000
y 0.000 1.541 0.000
z 0.000 0.000 -3.083
Polar
3z2-r2-6.165
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 2.759 0.000 0.000
y 0.000 2.759 0.000
z 0.000 0.000 5.220


<r2> (average value of r2) Å2
<r2> 44.925
(<r2>)1/2 6.703