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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: B3LYP/CEP-31G*

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/CEP-31G*
 hartrees
Energy at 0K-22.985853
Energy at 298.15K-22.988399
HF Energy-22.985853
Nuclear repulsion energy30.734251
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/CEP-31G*
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 3071 2966 6.27 165.22 0.00 0.00
2 A1 2356 2275 11.82 55.41 0.21 0.35
3 A1 1407 1359 1.58 7.72 0.75 0.85
4 A1 917 885 3.84 5.03 0.22 0.35
5 E 3152 3044 6.90 65.71 0.75 0.86
5 E 3152 3044 6.91 65.72 0.75 0.86
6 E 1475 1424 13.05 14.05 0.75 0.86
6 E 1475 1424 13.05 14.05 0.75 0.86
7 E 1051 1015 1.77 1.02 0.75 0.86
7 E 1051 1015 1.77 1.02 0.75 0.86
8 E 367 354 0.01 3.93 0.75 0.86
8 E 367 354 0.01 3.93 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9920.5 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 9580.2 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 B3LYP/CEP-31G*
ABC
5.18180 0.29597 0.29597

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.204
C2 0.000 0.000 0.285
N3 0.000 0.000 1.463
H4 0.000 1.037 -1.575
H5 0.898 -0.519 -1.575
H6 -0.898 -0.519 -1.575

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.48902.66771.10161.10161.1016
C21.48901.17872.12972.12972.1297
N32.66771.17873.21083.21083.2108
H41.10162.12973.21081.79671.7967
H51.10162.12973.21081.79671.7967
H61.10162.12973.21081.79671.7967

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 109.677
C2 C1 H5 109.677 C2 C1 H6 109.677
H4 C1 H5 109.265 H4 C1 H6 109.265
H5 C1 H6 109.265
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.361      
2 C -0.577      
3 N 0.381      
4 H 0.186      
5 H 0.186      
6 H 0.186      


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 -3.982 3.982
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.375 0.000 0.000
y 0.000 -17.375 0.000
z 0.000 0.000 -20.317
Traceless
 xyz
x 1.471 0.000 0.000
y 0.000 1.471 0.000
z 0.000 0.000 -2.942
Polar
3z2-r2-5.884
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 2.730 0.000 0.000
y 0.000 2.730 0.000
z 0.000 0.000 5.308


<r2> (average value of r2) Å2
<r2> 38.970
(<r2>)1/2 6.243