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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: B97D3/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B97D3/6-31G(2df,p)
 hartrees
Energy at 0K-132.675461
Energy at 298.15K-132.678033
HF Energy-132.675461
Nuclear repulsion energy58.188329
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 B97D3/6-31G(2df,p)
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 3000 5.09 139.84 0.00 0.01
2 A1 2295 2295 7.09 54.91 0.25 0.40
3 A1 1376 1376 1.19 12.67 0.54 0.70
4 A1 913 913 0.63 3.91 0.15 0.25
5 E 3079 3079 2.41 67.09 0.75 0.86
5 E 3079 3079 2.41 67.09 0.75 0.86
6 E 1443 1443 8.08 13.71 0.75 0.86
6 E 1443 1443 8.08 13.71 0.75 0.86
7 E 1035 1035 2.50 0.04 0.75 0.86
7 E 1035 1035 2.50 0.04 0.75 0.86
8 E 379 379 0.43 2.42 0.75 0.86
8 E 379 379 0.43 2.42 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9727.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9727.7 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 B97D3/6-31G(2df,p)
ABC
5.26584 0.30487 0.30487

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31G(2df,p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.181
C2 0.000 0.000 0.279
N3 0.000 0.000 1.443
H4 0.000 1.029 -1.562
H5 0.891 -0.514 -1.562
H6 -0.891 -0.514 -1.562

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45982.62451.09721.09721.0972
C21.45981.16472.10882.10882.1088
N32.62451.16473.17663.17663.1766
H41.09722.10883.17661.78231.7823
H51.09722.10883.17661.78231.7823
H61.09722.10883.17661.78231.7823

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 110.311
C2 C1 H5 110.311 C2 C1 H6 110.311
H4 C1 H5 108.618 H4 C1 H6 108.618
H5 C1 H6 108.618
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.500      
2 C 0.274      
3 N -0.309      
4 H 0.179      
5 H 0.179      
6 H 0.179      


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 -3.784 3.784
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.128 0.000 0.000
y 0.000 -17.128 0.000
z 0.000 0.000 -20.133
Traceless
 xyz
x 1.502 0.000 0.000
y 0.000 1.502 0.000
z 0.000 0.000 -3.004
Polar
3z2-r2-6.008
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 2.897 0.000 0.000
y 0.000 2.897 0.000
z 0.000 0.000 5.383


<r2> (average value of r2) Å2
<r2> 45.239
(<r2>)1/2 6.726