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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: PBEPBE/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at PBEPBE/6-31+G**
 hartrees
Energy at 0K-132.593556
Energy at 298.15K-132.596096
HF Energy-132.593556
Nuclear repulsion energy57.951140
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 PBEPBE/6-31+G**
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 2992 2957 2.98      
2 A1 2283 2257 10.50      
3 A1 1360 1344 4.87      
4 A1 922 911 0.52      
5 E 3075 3039 0.36      
5 E 3075 3039 0.36      
6 E 1427 1411 13.25      
6 E 1427 1411 13.25      
7 E 1018 1006 2.65      
7 E 1018 1006 2.65      
8 E 367 363 0.00      
8 E 367 363 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 9664.5 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 9554.3 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 PBEPBE/6-31+G**
ABC
5.21490 0.30285 0.30285

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.184
C2 0.000 0.000 0.276
N3 0.000 0.000 1.449
H4 0.000 1.034 -1.565
H5 0.895 -0.517 -1.565
H6 -0.895 -0.517 -1.565

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46062.63391.10201.10201.1020
C21.46061.17332.11202.11202.1120
N32.63391.17333.18723.18723.1872
H41.10202.11203.18721.79091.7909
H51.10202.11203.18721.79091.7909
H61.10202.11203.18721.79091.7909

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 110.226
C2 C1 H5 110.226 C2 C1 H6 110.226
H4 C1 H5 108.706 H4 C1 H6 108.706
H5 C1 H6 108.706
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.558      
2 C 0.371      
3 N -0.466      
4 H 0.218      
5 H 0.218      
6 H 0.218      


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 -4.035 4.035
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.813 0.000 0.000
y 0.000 -17.813 0.000
z 0.000 0.000 -20.931
Traceless
 xyz
x 1.559 0.000 0.000
y 0.000 1.559 0.000
z 0.000 0.000 -3.118
Polar
3z2-r2-6.237
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 3.118 0.000 0.000
y 0.000 3.118 0.000
z 0.000 0.000 6.068


<r2> (average value of r2) Å2
<r2> 45.915
(<r2>)1/2 6.776