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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: PBEPBEultrafine/aug-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/aug-cc-pVDZ
 hartrees
Energy at 0K-132.599725
Energy at 298.15K-132.602244
HF Energy-132.599725
Nuclear repulsion energy57.931889
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/aug-cc-pVDZ
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 2987 2968 3.03 212.73 0.01 0.01
2 A1 2272 2258 9.79 84.02 0.18 0.31
3 A1 1324 1316 2.88 7.56 0.41 0.58
4 A1 926 920 0.42 5.95 0.06 0.10
5 E 3073 3054 0.45 63.56 0.75 0.86
5 E 3073 3054 0.45 63.55 0.75 0.86
6 E 1389 1381 10.75 5.69 0.75 0.86
6 E 1389 1381 10.75 5.68 0.75 0.86
7 E 995 989 1.92 0.10 0.75 0.86
7 E 995 989 1.92 0.10 0.75 0.86
8 E 358 355 0.13 1.41 0.75 0.86
8 E 358 355 0.13 1.41 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9567.7 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 9509.3 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/aug-cc-pVDZ
ABC
5.17901 0.30297 0.30297

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.184
C2 0.000 0.000 0.276
N3 0.000 0.000 1.449
H4 0.000 1.038 -1.565
H5 0.899 -0.519 -1.565
H6 -0.899 -0.519 -1.565

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46022.63321.10511.10511.1051
C21.46021.17302.11292.11292.1129
N32.63321.17303.18723.18723.1872
H41.10512.11293.18721.79711.7971
H51.10512.11293.18721.79711.7971
H61.10512.11293.18721.79711.7971

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 110.132
C2 C1 H5 110.132 C2 C1 H6 110.132
H4 C1 H5 108.802 H4 C1 H6 108.802
H5 C1 H6 108.802
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.582      
2 C -0.048      
3 N -0.288      
4 H -0.082      
5 H -0.082      
6 H -0.082      


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 -4.001 4.001
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.804 0.000 0.000
y 0.000 -17.804 0.000
z 0.000 0.000 -20.958
Traceless
 xyz
x 1.577 0.000 0.000
y 0.000 1.577 0.000
z 0.000 0.000 -3.155
Polar
3z2-r2-6.309
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 3.717 0.000 0.000
y 0.000 3.717 0.000
z 0.000 0.000 6.375


<r2> (average value of r2) Å2
<r2> 45.918
(<r2>)1/2 6.776