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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: B3LYP/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 B3LYP/6-31G
 hartrees
Energy at 0K-132.714727
Energy at 298.15K-132.717325
HF Energy-132.714727
Nuclear repulsion energy58.074216
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/6-31G
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 3060 2944 3.88 141.66 0.00 0.00
2 A1 2327 2239 7.36 44.78 0.30 0.46
3 A1 1470 1414 8.97 16.83 0.62 0.76
4 A1 940 905 2.49 3.66 0.19 0.32
5 E 3138 3019 3.11 71.07 0.75 0.86
5 E 3138 3019 3.11 71.07 0.75 0.86
6 E 1519 1461 14.94 21.10 0.75 0.86
6 E 1519 1461 14.94 21.10 0.75 0.86
7 E 1103 1061 3.80 0.08 0.75 0.86
7 E 1103 1061 3.80 0.08 0.75 0.86
8 E 376 362 0.00 4.97 0.75 0.86
8 E 376 362 0.00 4.97 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10034.8 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 9653.5 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/6-31G
ABC
5.31169 0.30346 0.30346

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.182
C2 0.000 0.000 0.277
N3 0.000 0.000 1.448
H4 0.000 1.025 -1.568
H5 0.887 -0.512 -1.568
H6 -0.887 -0.512 -1.568

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45882.63051.09481.09481.0948
C21.45881.17162.11032.11032.1103
N32.63051.17163.18573.18573.1857
H41.09482.11033.18571.77461.7746
H51.09482.11033.18571.77461.7746
H61.09482.11033.18571.77461.7746

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 110.645
C2 C1 H5 110.645 C2 C1 H6 110.645
H4 C1 H5 108.272 H4 C1 H6 108.272
H5 C1 H6 108.272
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.457      
2 C 0.125      
3 N -0.267      
4 H 0.200      
5 H 0.200      
6 H 0.200      


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 -3.883 3.883
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.357 0.000 0.000
y 0.000 -17.357 0.000
z 0.000 0.000 -20.853
Traceless
 xyz
x 1.748 0.000 0.000
y 0.000 1.748 0.000
z 0.000 0.000 -3.496
Polar
3z2-r2-6.992
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 2.469 0.000 0.000
y 0.000 2.469 0.000
z 0.000 0.000 5.048


<r2> (average value of r2) Å2
<r2> 45.623
(<r2>)1/2 6.754