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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: B2PLYP/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 B2PLYP/6-311G*
 hartrees
Energy at 0K-132.650238
Energy at 298.15K-132.652839
HF Energy-132.504201
Nuclear repulsion energy58.383138
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/6-311G*
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 3084 3084 4.26 139.40 0.00 0.00
2 A1 2307 2307 2.17 44.88 0.27 0.42
3 A1 1445 1445 3.92 8.22 0.66 0.80
4 A1 932 932 2.13 3.79 0.16 0.28
5 E 3162 3162 2.72 66.20 0.75 0.86
5 E 3162 3162 2.72 66.20 0.75 0.86
6 E 1511 1511 12.09 11.62 0.75 0.86
6 E 1511 1511 12.09 11.62 0.75 0.86
7 E 1083 1083 2.58 0.04 0.75 0.86
7 E 1083 1083 2.58 0.04 0.75 0.86
8 E 380 380 0.25 3.59 0.75 0.86
8 E 380 380 0.25 3.59 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10020.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10020.4 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 B2PLYP/6-311G*
ABC
5.33124 0.30633 0.30633

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-311G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.180
C2 0.000 0.000 0.279
N3 0.000 0.000 1.439
H4 0.000 1.023 -1.557
H5 0.886 -0.511 -1.557
H6 -0.886 -0.511 -1.557

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45952.61911.08991.08991.0899
C21.45951.15962.10192.10192.1019
N32.61911.15963.16563.16563.1656
H41.08992.10193.16561.77131.7713
H51.08992.10193.16561.77131.7713
H61.08992.10193.16561.77131.7713

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 110.227
C2 C1 H5 110.227 C2 C1 H6 110.227
H4 C1 H5 108.705 H4 C1 H6 108.705
H5 C1 H6 108.705
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.652      
2 C 0.093      
3 N -0.235      
4 H 0.265      
5 H 0.265      
6 H 0.265      


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 -3.823 3.823
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.601 0.000 0.000
y 0.000 -17.601 0.000
z 0.000 0.000 -20.815
Traceless
 xyz
x 1.607 0.000 0.000
y 0.000 1.607 0.000
z 0.000 0.000 -3.214
Polar
3z2-r2-6.428
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 2.757 0.000 0.000
y 0.000 2.757 0.000
z 0.000 0.000 5.127


<r2> (average value of r2) Å2
<r2> 45.389
(<r2>)1/2 6.737