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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/6-311G*
 hartrees
Energy at 0K-132.614753
Energy at 298.15K-132.617322
HF Energy-132.614753
Nuclear repulsion energy58.213654
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/6-311G*
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 2987 2956 3.94 152.07 0.00 0.01
2 A1 2288 2264 7.71 59.44 0.28 0.44
3 A1 1375 1360 6.44 11.80 0.63 0.77
4 A1 926 916 0.70 3.61 0.15 0.26
5 E 3060 3028 2.22 71.26 0.75 0.86
5 E 3060 3028 2.22 71.26 0.75 0.86
6 E 1442 1427 12.58 12.07 0.75 0.86
6 E 1442 1427 12.58 12.07 0.75 0.86
7 E 1031 1020 3.97 0.01 0.75 0.86
7 E 1031 1020 3.96 0.01 0.75 0.86
8 E 377 373 0.04 3.36 0.75 0.86
8 E 377 373 0.04 3.36 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9698.3 cm-1
Scaled (by 0.9896) Zero Point Vibrational Energy (zpe) 9597.4 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/6-311G*
ABC
5.25544 0.30556 0.30556

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.178
C2 0.000 0.000 0.277
N3 0.000 0.000 1.442
H4 0.000 1.030 -1.564
H5 0.892 -0.515 -1.564
H6 -0.892 -0.515 -1.564

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45522.62011.10001.10001.1000
C21.45521.16492.10982.10982.1098
N32.62011.16493.17783.17783.1778
H41.10002.10983.17781.78401.7840
H51.10002.10983.17781.78401.7840
H61.10002.10983.17781.78401.7840

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 110.547
C2 C1 H5 110.547 C2 C1 H6 110.547
H4 C1 H5 108.374 H4 C1 H6 108.374
H5 C1 H6 108.374
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.679      
2 C 0.107      
3 N -0.232      
4 H 0.268      
5 H 0.268      
6 H 0.268      


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 -3.814 3.814
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.543 0.000 0.000
y 0.000 -17.543 0.000
z 0.000 0.000 -20.506
Traceless
 xyz
x 1.481 0.000 0.000
y 0.000 1.481 0.000
z 0.000 0.000 -2.963
Polar
3z2-r2-5.926
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 2.837 0.000 0.000
y 0.000 2.837 0.000
z 0.000 0.000 5.470


<r2> (average value of r2) Å2
<r2> 45.441
(<r2>)1/2 6.741