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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: B2PLYP=FULLultrafine/cc-pVDZ

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=FULLultrafine/cc-pVDZ
 hartrees
Energy at 0K-132.627496
Energy at 298.15K 
HF Energy-132.481511
Nuclear repulsion energy58.029144
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=FULLultrafine/cc-pVDZ
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 2955 3.75 148.79 0.00 0.00
2 A1 2306 2210 2.22 42.67 0.27 0.42
3 A1 1404 1345 0.97 7.44 0.60 0.75
4 A1 940 901 1.59 4.52 0.17 0.29
5 E 3175 3042 0.79 69.37 0.75 0.86
5 E 3175 3042 0.79 69.37 0.75 0.86
6 E 1465 1404 10.55 12.69 0.75 0.86
6 E 1465 1404 10.55 12.69 0.75 0.86
7 E 1055 1011 2.23 0.00 0.75 0.86
7 E 1055 1011 2.23 0.00 0.75 0.86
8 E 376 361 0.16 2.83 0.75 0.86
8 E 376 361 0.16 2.83 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9938.0 cm-1
Scaled (by 0.9582) Zero Point Vibrational Energy (zpe) 9522.6 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=FULLultrafine/cc-pVDZ
ABC
5.23860 0.30318 0.30318

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.186
C2 0.000 0.000 0.278
N3 0.000 0.000 1.447
H4 0.000 1.032 -1.563
H5 0.893 -0.516 -1.563
H6 -0.893 -0.516 -1.563

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46402.63301.09861.09861.0986
C21.46401.16902.11082.11082.1108
N32.63301.16903.18243.18243.1824
H41.09862.11083.18241.78691.7869
H51.09862.11083.18241.78691.7869
H61.09862.11083.18241.78691.7869

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 110.099
C2 C1 H5 110.099 C2 C1 H6 110.099
H4 C1 H5 108.836 H4 C1 H6 108.836
H5 C1 H6 108.836
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.001      
2 C -0.151      
3 N -0.103      
4 H 0.085      
5 H 0.085      
6 H 0.085      


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 -3.690 3.690
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.468 0.000 0.000
y 0.000 -17.468 0.000
z 0.000 0.000 -20.407
Traceless
 xyz
x 1.470 0.000 0.000
y 0.000 1.470 0.000
z 0.000 0.000 -2.939
Polar
3z2-r2-5.878
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 2.720 0.000 0.000
y 0.000 2.720 0.000
z 0.000 0.000 5.089


<r2> (average value of r2) Å2
<r2> 45.607
(<r2>)1/2 6.753