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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: B2PLYP/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-132.697955
Energy at 298.15K-132.700546
HF Energy-132.527112
Nuclear repulsion energy58.520990
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/Def2TZVPP
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 3079 3079 2.79 173.06 0.00 0.00
2 A1 2304 2304 3.44 54.76 0.21 0.35
3 A1 1425 1425 1.48 4.83 0.50 0.67
4 A1 931 931 1.35 4.82 0.09 0.16
5 E 3156 3156 0.80 57.67 0.75 0.86
5 E 3156 3156 0.80 57.67 0.75 0.86
6 E 1491 1491 10.29 7.06 0.75 0.86
6 E 1491 1491 10.29 7.06 0.75 0.86
7 E 1070 1070 1.53 0.00 0.75 0.86
7 E 1070 1070 1.53 0.00 0.75 0.86
8 E 377 377 0.46 2.58 0.75 0.86
8 E 377 377 0.46 2.58 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9962.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9962.3 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 B2PLYP/Def2TZVPP
ABC
5.34334 0.30781 0.30781

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/Def2TZVPP

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 1.435
H4 0.000 1.022 -1.551
H5 0.885 -0.511 -1.551
H6 -0.885 -0.511 -1.551

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45692.61341.08741.08741.0874
C21.45691.15662.09552.09552.0955
N32.61341.15663.15613.15613.1561
H41.08742.09553.15611.76931.7693
H51.08742.09553.15611.76931.7693
H61.08742.09553.15611.76931.7693

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 110.048
C2 C1 H5 110.048 C2 C1 H6 110.048
H4 C1 H5 108.888 H4 C1 H6 108.888
H5 C1 H6 108.888
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.135      
2 C -0.197      
3 N -0.039      
4 H 0.124      
5 H 0.124      
6 H 0.124      


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 -3.958 3.958
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.720 0.000 0.000
y 0.000 -17.720 0.000
z 0.000 0.000 -20.973
Traceless
 xyz
x 1.627 0.000 0.000
y 0.000 1.627 0.000
z 0.000 0.000 -3.253
Polar
3z2-r2-6.507
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 3.241 0.000 0.000
y 0.000 3.241 0.000
z 0.000 0.000 5.617


<r2> (average value of r2) Å2
<r2> 45.305
(<r2>)1/2 6.731