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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: PBEPBEultrafine/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-132.582702
Energy at 298.15K-132.585262
HF Energy-132.582702
Nuclear repulsion energy57.948584
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/6-31G*
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 3000 2950 2.64 140.27 0.00 0.00
2 A1 2296 2258 7.15 52.70 0.30 0.46
3 A1 1385 1362 4.48 16.59 0.59 0.75
4 A1 929 913 0.65 3.63 0.20 0.33
5 E 3077 3027 1.03 71.18 0.75 0.86
5 E 3077 3027 1.03 71.18 0.75 0.86
6 E 1452 1428 11.13 17.87 0.75 0.86
6 E 1452 1428 11.13 17.87 0.75 0.86
7 E 1035 1018 4.43 0.10 0.75 0.86
7 E 1035 1018 4.43 0.10 0.75 0.86
8 E 376 369 0.17 3.58 0.75 0.86
8 E 376 369 0.17 3.57 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9744.0 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 9583.3 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/6-31G*
ABC
5.22412 0.30279 0.30279

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-31G*

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 0.277
N3 0.000 0.000 1.450
H4 0.000 1.033 -1.569
H5 0.895 -0.517 -1.569
H6 -0.895 -0.517 -1.569

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46022.63301.10271.10271.1027
C21.46021.17292.11522.11522.1152
N32.63301.17293.19063.19063.1906
H41.10272.11523.19061.78941.7894
H51.10272.11523.19061.78941.7894
H61.10272.11523.19061.78941.7894

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 110.469
C2 C1 H5 110.469 C2 C1 H6 110.469
H4 C1 H5 108.455 H4 C1 H6 108.455
H5 C1 H6 108.455
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.574      
2 C 0.360      
3 N -0.451      
4 H 0.222      
5 H 0.222      
6 H 0.222      


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 -3.768 3.768
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.236 0.000 0.000
y 0.000 -17.236 0.000
z 0.000 0.000 -20.135
Traceless
 xyz
x 1.449 0.000 0.000
y 0.000 1.449 0.000
z 0.000 0.000 -2.898
Polar
3z2-r2-5.797
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 2.630 0.000 0.000
y 0.000 2.630 0.000
z 0.000 0.000 5.273


<r2> (average value of r2) Å2
<r2> 45.529
(<r2>)1/2 6.748