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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: PBEPBEultrafine/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-132.629909
Energy at 298.15K-132.632460
HF Energy-132.629909
Nuclear repulsion energy58.325164
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/6-311+G(3df,2p)
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 2981 2981 2.36 193.18 0.01 0.01
2 A1 2280 2280 10.00 81.67 0.18 0.30
3 A1 1355 1355 3.39 7.68 0.40 0.57
4 A1 922 922 0.29 5.24 0.05 0.10
5 E 3054 3054 0.38 61.45 0.75 0.86
5 E 3054 3054 0.38 61.46 0.75 0.86
6 E 1421 1421 11.42 5.49 0.75 0.86
6 E 1421 1421 11.42 5.49 0.75 0.86
7 E 1014 1014 2.16 0.11 0.75 0.86
7 E 1014 1014 2.16 0.11 0.75 0.86
8 E 369 369 0.19 1.55 0.75 0.86
8 E 369 369 0.19 1.55 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9626.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9626.6 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/6-311+G(3df,2p)
ABC
5.25990 0.30677 0.30677

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-311+G(3df,2p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.177
C2 0.000 0.000 0.277
N3 0.000 0.000 1.439
H4 0.000 1.030 -1.558
H5 0.892 -0.515 -1.558
H6 -0.892 -0.515 -1.558

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45352.61581.09791.09791.0979
C21.45351.16232.10392.10392.1039
N32.61581.16233.16903.16903.1690
H41.09792.10393.16901.78331.7833
H51.09792.10393.16901.78331.7833
H61.09792.10393.16901.78331.7833

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 110.322
C2 C1 H5 110.322 C2 C1 H6 110.322
H4 C1 H5 108.608 H4 C1 H6 108.608
H5 C1 H6 108.608
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.210      
2 C 0.675      
3 N -0.917      
4 H 0.151      
5 H 0.151      
6 H 0.151      


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 -4.014 4.014
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.755 0.000 0.000
y 0.000 -17.755 0.000
z 0.000 0.000 -20.869
Traceless
 xyz
x 1.557 0.000 0.000
y 0.000 1.557 0.000
z 0.000 0.000 -3.114
Polar
3z2-r2-6.229
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 3.641 0.000 0.000
y 0.000 3.641 0.000
z 0.000 0.000 6.238


<r2> (average value of r2) Å2
<r2> 45.465
(<r2>)1/2 6.743