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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: B2PLYP/TZVP

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/TZVP
 hartrees
Energy at 0K-132.670846
Energy at 298.15K-132.673430
HF Energy-132.520021
Nuclear repulsion energy58.488191
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/TZVP
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 3083 2943 3.60 167.81 0.00 0.00
2 A1 2313 2207 3.01 52.31 0.22 0.37
3 A1 1432 1367 2.38 6.41 0.61 0.76
4 A1 931 888 1.73 3.84 0.11 0.21
5 E 3162 3018 1.33 61.60 0.75 0.86
5 E 3162 3018 1.33 61.60 0.75 0.86
6 E 1495 1426 11.63 9.64 0.75 0.86
6 E 1495 1426 11.63 9.64 0.75 0.86
7 E 1075 1026 1.31 0.04 0.75 0.86
7 E 1075 1026 1.31 0.04 0.75 0.86
8 E 371 354 0.25 4.53 0.75 0.86
8 E 371 354 0.25 4.53 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9981.2 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 9526.0 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/TZVP
ABC
5.33283 0.30756 0.30756

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/TZVP

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 0.279
N3 0.000 0.000 1.436
H4 0.000 1.023 -1.552
H5 0.886 -0.511 -1.552
H6 -0.886 -0.511 -1.552

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45702.61441.08851.08851.0885
C21.45701.15752.09642.09642.0964
N32.61441.15753.15783.15783.1578
H41.08852.09643.15781.77101.7710
H51.08852.09643.15781.77101.7710
H61.08852.09643.15781.77101.7710

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 110.051
C2 C1 H5 110.051 C2 C1 H6 110.051
H4 C1 H5 108.886 H4 C1 H6 108.886
H5 C1 H6 108.886
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.391      
2 C 0.025      
3 N -0.104      
4 H 0.157      
5 H 0.157      
6 H 0.157      


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 -3.931 3.931
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.731 0.000 0.000
y 0.000 -17.731 0.000
z 0.000 0.000 -21.166
Traceless
 xyz
x 1.717 0.000 0.000
y 0.000 1.717 0.000
z 0.000 0.000 -3.435
Polar
3z2-r2-6.869
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 2.995 0.000 0.000
y 0.000 2.995 0.000
z 0.000 0.000 5.467


<r2> (average value of r2) Å2
<r2> 45.381
(<r2>)1/2 6.737