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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: mPW1PW91/daug-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 mPW1PW91/daug-cc-pVTZ
 hartrees
Energy at 0K-132.765432
Energy at 298.15K-132.768037
HF Energy-132.765432
Nuclear repulsion energy58.794095
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 mPW1PW91/daug-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 3073 3073 1.97 191.22 0.00 0.01
2 A1 2391 2391 12.44 79.20 0.15 0.26
3 A1 1407 1407 2.62 5.42 0.39 0.56
4 A1 946 946 1.06 5.50 0.04 0.08
5 E 3152 3152 0.25 55.16 0.75 0.86
5 E 3152 3152 0.25 54.84 0.75 0.86
6 E 1472 1472 11.32 5.26 0.75 0.86
6 E 1472 1472 11.32 5.21 0.75 0.86
7 E 1058 1058 2.27 0.10 0.75 0.86
7 E 1058 1058 2.27 0.10 0.75 0.86
8 E 386 386 0.55 1.29 0.75 0.86
8 E 386 386 0.55 1.33 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9976.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9976.5 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 mPW1PW91/daug-cc-pVTZ
ABC
5.33130 0.31117 0.31117

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/daug-cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.171
C2 0.000 0.000 0.279
N3 0.000 0.000 1.427
H4 0.000 1.023 -1.545
H5 0.886 -0.511 -1.545
H6 -0.886 -0.511 -1.545

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45012.59791.08871.08871.0887
C21.45011.14782.09072.09072.0907
N32.59791.14783.14233.14233.1423
H41.08872.09073.14231.77131.7713
H51.08872.09073.14231.77131.7713
H61.08872.09073.14231.77131.7713

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 110.058
C2 C1 H5 110.058 C2 C1 H6 110.058
H4 C1 H5 108.878 H4 C1 H6 108.878
H5 C1 H6 108.878
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.115      
2 C 0.088      
3 N -0.964      
4 H 0.330      
5 H 0.330      
6 H 0.330      


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 -4.046 4.046
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.532 0.000 0.000
y 0.000 -17.532 0.000
z 0.000 0.000 -20.723
Traceless
 xyz
x 1.595 0.000 0.000
y 0.000 1.595 0.000
z 0.000 0.000 -3.191
Polar
3z2-r2-6.382
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 3.584 0.000 0.000
y 0.000 3.584 0.000
z 0.000 0.000 5.897


<r2> (average value of r2) Å2
<r2> 44.854
(<r2>)1/2 6.697