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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: B3LYP/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 B3LYP/6-311G*
 hartrees
Energy at 0K-132.789096
Energy at 298.15K-132.791709
HF Energy-132.789096
Nuclear repulsion energy58.552171
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 B3LYP/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 3054 2951 4.44 144.19 0.00 0.00
2 A1 2371 2291 7.99 54.56 0.27 0.42
3 A1 1428 1380 4.27 9.69 0.64 0.78
4 A1 931 899 1.94 3.25 0.15 0.26
5 E 3122 3017 3.31 69.37 0.75 0.86
5 E 3122 3017 3.31 69.37 0.75 0.86
6 E 1493 1442 11.93 11.79 0.75 0.86
6 E 1493 1442 11.93 11.79 0.75 0.86
7 E 1074 1038 3.12 0.02 0.75 0.86
7 E 1074 1038 3.12 0.02 0.75 0.86
8 E 389 376 0.27 3.67 0.75 0.86
8 E 389 376 0.27 3.67 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9968.8 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 9632.9 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 B3LYP/6-311G*
ABC
5.32399 0.30825 0.30825

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311G*

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 0.281
N3 0.000 0.000 1.433
H4 0.000 1.023 -1.556
H5 0.886 -0.512 -1.556
H6 -0.886 -0.512 -1.556

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45712.60911.09171.09171.0917
C21.45711.15202.10322.10322.1032
N32.60911.15203.15973.15973.1597
H41.09172.10323.15971.77251.7725
H51.09172.10323.15971.77251.7725
H61.09172.10323.15971.77251.7725

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 110.385
C2 C1 H5 110.385 C2 C1 H6 110.385
H4 C1 H5 108.542 H4 C1 H6 108.542
H5 C1 H6 108.542
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.642      
2 C 0.090      
3 N -0.229      
4 H 0.260      
5 H 0.260      
6 H 0.260      


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 -3.860 3.860
CHELPG        
AIM        
ESP 0.001 0.000 3.881 3.881


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.556 0.000 0.000
y 0.000 -17.556 0.000
z 0.000 0.000 -20.725
Traceless
 xyz
x 1.585 0.000 0.000
y 0.000 1.585 0.000
z 0.000 0.000 -3.169
Polar
3z2-r2-6.339
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 2.778 0.000 0.000
y 0.000 2.778 0.000
z 0.000 0.000 5.230


<r2> (average value of r2) Å2
<r2> 45.181
(<r2>)1/2 6.722