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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: PBEPBEultrafine/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-132.590298
Energy at 298.15K-132.592851
HF Energy-132.590298
Nuclear repulsion energy57.891336
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/cc-pVDZ
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 2987 2969 2.90 162.75 0.00 0.00
2 A1 2288 2275 8.23 56.33 0.28 0.44
3 A1 1333 1325 2.56 11.39 0.57 0.73
4 A1 933 928 0.45 4.37 0.16 0.28
5 E 3074 3056 0.24 74.01 0.75 0.86
5 E 3074 3056 0.24 74.01 0.75 0.86
6 E 1392 1383 11.11 13.57 0.75 0.86
6 E 1392 1383 11.11 13.57 0.75 0.86
7 E 1000 994 3.31 0.01 0.75 0.86
7 E 1000 994 3.31 0.01 0.75 0.86
8 E 374 371 0.01 2.58 0.75 0.86
8 E 374 371 0.01 2.58 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9609.2 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 9553.4 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/cc-pVDZ
ABC
5.16992 0.30271 0.30271

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.183
C2 0.000 0.000 0.276
N3 0.000 0.000 1.450
H4 0.000 1.038 -1.569
H5 0.899 -0.519 -1.569
H6 -0.899 -0.519 -1.569

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45922.63301.10791.10791.1079
C21.45921.17382.11722.11722.1172
N32.63301.17383.19253.19253.1925
H41.10792.11723.19251.79871.7987
H51.10792.11723.19251.79871.7987
H61.10792.11723.19251.79871.7987

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 110.384
C2 C1 H5 110.384 C2 C1 H6 110.384
H4 C1 H5 108.543 H4 C1 H6 108.543
H5 C1 H6 108.543
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.024      
2 C -0.135      
3 N -0.115      
4 H 0.091      
5 H 0.091      
6 H 0.091      


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 -3.679 3.679
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.352 0.000 0.000
y 0.000 -17.352 0.000
z 0.000 0.000 -20.000
Traceless
 xyz
x 1.324 0.000 0.000
y 0.000 1.324 0.000
z 0.000 0.000 -2.648
Polar
3z2-r2-5.297
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 2.786 0.000 0.000
y 0.000 2.786 0.000
z 0.000 0.000 5.404


<r2> (average value of r2) Å2
<r2> 45.580
(<r2>)1/2 6.751