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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: M06-2X/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at M06-2X/3-21G*
 hartrees
Energy at 0K-131.960399
Energy at 298.15K-131.963164
HF Energy-131.960399
Nuclear repulsion energy58.347384
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 M06-2X/3-21G*
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 3099 2936 0.27 109.75 0.00 0.00
2 A1 2418 2290 2.56 32.58 0.31 0.47
3 A1 1485 1406 15.89 14.16 0.65 0.79
4 A1 940 890 2.76 3.29 0.20 0.34
5 E 3169 3002 0.08 58.58 0.75 0.86
5 E 3169 3002 0.07 58.55 0.75 0.86
6 E 1547 1465 15.88 20.96 0.75 0.86
6 E 1547 1465 15.89 20.97 0.75 0.86
7 E 1130 1070 5.33 0.00 0.75 0.86
7 E 1130 1070 5.32 0.00 0.75 0.86
8 E 461 437 0.09 4.09 0.75 0.86
8 E 461 437 0.09 4.13 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10277.2 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 9734.6 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 M06-2X/3-21G*
ABC
5.29095 0.30632 0.30632

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/3-21G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.180
C2 0.000 0.000 0.279
N3 0.000 0.000 1.439
H4 0.000 1.027 -1.556
H5 0.889 -0.513 -1.556
H6 -0.889 -0.513 -1.556

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45902.61901.09331.09331.0933
C21.45901.16002.10292.10292.1029
N32.61901.16003.16633.16633.1663
H41.09332.10293.16631.77801.7780
H51.09332.10293.16631.77801.7780
H61.09332.10293.16631.77801.7780

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 110.130
C2 C1 H5 110.130 C2 C1 H6 110.130
H4 C1 H5 108.804 H4 C1 H6 108.804
H5 C1 H6 108.804
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.621      
2 C 0.281      
3 N -0.452      
4 H 0.264      
5 H 0.264      
6 H 0.264      


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 -3.688 3.688
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.465 0.000 0.000
y 0.000 -17.465 0.000
z 0.000 0.000 -20.586
Traceless
 xyz
x 1.561 0.000 0.000
y 0.000 1.561 0.000
z 0.000 0.000 -3.121
Polar
3z2-r2-6.243
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 2.280 0.000 0.000
y 0.000 2.284 -0.001
z 0.000 -0.001 4.546


<r2> (average value of r2) Å2
<r2> 45.302
(<r2>)1/2 6.731