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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: B1B95/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B1B95/6-311G**
 hartrees
Energy at 0K-132.725469
Energy at 298.15K-132.728092
HF Energy-132.725469
Nuclear repulsion energy58.765410
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 B1B95/6-311G**
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 3079 2956 2.50 153.47 0.00 0.00
2 A1 2404 2308 10.13 54.33 0.27 0.43
3 A1 1407 1351 4.09 7.63 0.65 0.79
4 A1 950 912 1.50 3.59 0.15 0.26
5 E 3161 3035 0.98 65.70 0.75 0.86
5 E 3161 3035 0.98 65.70 0.75 0.86
6 E 1474 1415 12.11 10.45 0.75 0.86
6 E 1474 1415 12.11 10.45 0.75 0.86
7 E 1057 1015 3.20 0.00 0.75 0.86
7 E 1057 1015 3.20 0.00 0.75 0.86
8 E 392 376 0.21 3.59 0.75 0.86
8 E 392 376 0.21 3.59 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10003.8 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 9604.6 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 B1B95/6-311G**
ABC
5.33244 0.31091 0.31091

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.171
C2 0.000 0.000 0.278
N3 0.000 0.000 1.428
H4 0.000 1.023 -1.546
H5 0.886 -0.511 -1.546
H6 -0.886 -0.511 -1.546

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.44972.59891.08891.08891.0889
C21.44971.14922.09112.09112.0911
N32.59891.14923.14423.14423.1442
H41.08892.09113.14421.77111.7711
H51.08892.09113.14421.77111.7711
H61.08892.09113.14421.77111.7711

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 110.104
C2 C1 H5 110.104 C2 C1 H6 110.104
H4 C1 H5 108.831 H4 C1 H6 108.831
H5 C1 H6 108.831
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.294      
2 C 0.039      
3 N -0.261      
4 H 0.172      
5 H 0.172      
6 H 0.172      


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 -3.886 3.886
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.378 0.000 0.000
y 0.000 -17.378 0.000
z 0.000 0.000 -20.437
Traceless
 xyz
x 1.529 0.000 0.000
y 0.000 1.529 0.000
z 0.000 0.000 -3.059
Polar
3z2-r2-6.118
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 2.783 0.000 0.000
y 0.000 2.783 0.000
z 0.000 0.000 5.249


<r2> (average value of r2) Å2
<r2> 44.758
(<r2>)1/2 6.690