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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: B2PLYP/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-132.693676
Energy at 298.15K-132.696265
HF Energy-132.522354
Nuclear repulsion energy58.511987
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/cc-pVTZ
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 3076 2951 2.84 165.50 0.00 0.00
2 A1 2303 2210 3.25 51.66 0.22 0.36
3 A1 1423 1366 1.64 5.43 0.51 0.67
4 A1 929 891 1.31 4.50 0.10 0.18
5 E 3153 3025 0.96 59.07 0.75 0.86
5 E 3153 3025 0.96 59.08 0.75 0.86
6 E 1491 1430 9.99 7.29 0.75 0.86
6 E 1491 1430 9.99 7.29 0.75 0.86
7 E 1069 1026 1.69 0.01 0.75 0.86
7 E 1069 1026 1.69 0.01 0.75 0.86
8 E 373 358 0.39 2.27 0.75 0.86
8 E 373 358 0.39 2.27 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9951.8 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 9547.7 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/cc-pVTZ
ABC
5.34445 0.30772 0.30772

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

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 1.021 -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
C11.45682.61381.08741.08741.0874
C21.45681.15702.09562.09562.0956
N32.61381.15703.15673.15673.1567
H41.08742.09563.15671.76911.7691
H51.08742.09563.15671.76911.7691
H61.08742.09563.15671.76911.7691

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 110.062
C2 C1 H5 110.062 C2 C1 H6 110.062
H4 C1 H5 108.874 H4 C1 H6 108.874
H5 C1 H6 108.874
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.293      
2 C -0.099      
3 N -0.034      
4 H 0.142      
5 H 0.142      
6 H 0.142      


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 -3.895 3.895
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.645 0.000 0.000
y 0.000 -17.645 0.000
z 0.000 0.000 -20.787
Traceless
 xyz
x 1.571 0.000 0.000
y 0.000 1.571 0.000
z 0.000 0.000 -3.142
Polar
3z2-r2-6.284
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 3.146 0.000 0.000
y 0.000 3.146 0.000
z 0.000 0.000 5.462


<r2> (average value of r2) Å2
<r2> 45.244
(<r2>)1/2 6.726