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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: PBEPBEultrafine/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at PBEPBEultrafine/TZVP
 hartrees
Energy at 0K-132.630548
Energy at 298.15K-132.633106
HF Energy-132.630548
Nuclear repulsion energy58.278793
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 PBEPBEultrafine/TZVP
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 2986 2952 2.48 182.41 0.00 0.01
2 A1 2289 2263 9.00 68.60 0.24 0.39
3 A1 1361 1346 5.91 9.73 0.58 0.73
4 A1 924 913 0.47 3.67 0.10 0.19
5 E 3061 3026 0.56 67.22 0.75 0.86
5 E 3061 3026 0.56 67.22 0.75 0.86
6 E 1424 1408 12.62 10.21 0.75 0.86
6 E 1424 1408 12.62 10.21 0.75 0.86
7 E 1021 1009 2.71 0.01 0.75 0.86
7 E 1021 1009 2.71 0.01 0.75 0.86
8 E 371 367 0.02 4.27 0.75 0.86
8 E 371 367 0.02 4.27 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9657.0 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 9546.9 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 PBEPBEultrafine/TZVP
ABC
5.24876 0.30637 0.30637

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/TZVP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.177
C2 0.000 0.000 0.277
N3 0.000 0.000 1.440
H4 0.000 1.031 -1.559
H5 0.893 -0.515 -1.559
H6 -0.893 -0.515 -1.559

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45382.61741.09911.09911.0991
C21.45381.16362.10532.10532.1053
N32.61741.16363.17153.17153.1715
H41.09912.10533.17151.78521.7852
H51.09912.10533.17151.78521.7852
H61.09912.10533.17151.78521.7852

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 110.333
C2 C1 H5 110.333 C2 C1 H6 110.333
H4 C1 H5 108.596 H4 C1 H6 108.596
H5 C1 H6 108.596
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.426      
2 C -0.011      
3 N -0.072      
4 H 0.170      
5 H 0.170      
6 H 0.170      


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 -3.952 3.952
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.688 0.000 0.000
y 0.000 -17.688 0.000
z 0.000 0.000 -20.850
Traceless
 xyz
x 1.581 0.000 0.000
y 0.000 1.581 0.000
z 0.000 0.000 -3.161
Polar
3z2-r2-6.323
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 3.095 0.000 0.000
y 0.000 3.095 0.000
z 0.000 0.000 5.850


<r2> (average value of r2) Å2
<r2> 45.480
(<r2>)1/2 6.744