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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: B2PLYP/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 B2PLYP/6-31G**
 hartrees
Energy at 0K-132.622423
Energy at 298.15K-132.625011
HF Energy-132.477424
Nuclear repulsion energy58.191197
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 B2PLYP/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 3103 3103 3.15 130.82 0.00 0.00
2 A1 2318 2318 1.96 39.75 0.30 0.46
3 A1 1443 1443 1.69 11.03 0.62 0.77
4 A1 937 937 1.91 3.93 0.20 0.34
5 E 3188 3188 1.65 64.97 0.75 0.86
5 E 3188 3188 1.65 64.97 0.75 0.86
6 E 1511 1511 9.53 16.47 0.75 0.86
6 E 1511 1511 9.53 16.47 0.75 0.86
7 E 1078 1078 2.36 0.11 0.75 0.86
7 E 1078 1078 2.36 0.11 0.75 0.86
8 E 376 376 0.57 3.86 0.75 0.86
8 E 376 376 0.57 3.86 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10053.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10053.1 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 B2PLYP/6-31G**
ABC
5.32330 0.30429 0.30429

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G**

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 0.278
N3 0.000 0.000 1.445
H4 0.000 1.023 -1.559
H5 0.886 -0.512 -1.559
H6 -0.886 -0.512 -1.559

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46192.62911.09011.09011.0901
C21.46191.16712.10312.10312.1031
N32.62911.16713.17403.17403.1740
H41.09012.10313.17401.77261.7726
H51.09012.10313.17401.77261.7726
H61.09012.10313.17401.77261.7726

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 110.142
C2 C1 H5 110.142 C2 C1 H6 110.142
H4 C1 H5 108.792 H4 C1 H6 108.792
H5 C1 H6 108.792
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.384      
2 C 0.295      
3 N -0.420      
4 H 0.170      
5 H 0.170      
6 H 0.170      


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 -17.338 0.000 0.000
y 0.000 -17.338 0.000
z 0.000 0.000 -20.514
Traceless
 xyz
x 1.588 0.000 0.000
y 0.000 1.588 0.000
z 0.000 0.000 -3.176
Polar
3z2-r2-6.353
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 2.593 0.000 0.000
y 0.000 2.593 0.000
z 0.000 0.000 4.985


<r2> (average value of r2) Å2
<r2> 45.418
(<r2>)1/2 6.739