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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: LSDA/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at LSDA/6-311G*
 hartrees
Energy at 0K-132.031138
Energy at 298.15K-132.033730
HF Energy-132.031138
Nuclear repulsion energy58.692401
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 LSDA/6-311G*
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 2984 2936 0.70      
2 A1 2338 2300 12.68      
3 A1 1357 1335 14.91      
4 A1 962 947 0.66      
5 E 3063 3014 0.00      
5 E 3063 3014 0.00      
6 E 1417 1394 16.37      
6 E 1417 1394 16.37      
7 E 1016 1000 7.48      
7 E 1016 1000 7.48      
8 E 389 382 0.02      
8 E 389 382 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 9705.9 cm-1
Scaled (by 0.9837) 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 LSDA/6-311G*
ABC
5.26164 0.31194 0.31194

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/6-311G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.162
C2 0.000 0.000 0.272
N3 0.000 0.000 1.428
H4 0.000 1.029 -1.552
H5 0.891 -0.515 -1.552
H6 -0.891 -0.515 -1.552

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.43432.59081.10081.10081.1008
C21.43431.15652.09472.09472.0947
N32.59081.15653.15363.15363.1536
H41.10082.09473.15361.78301.7830
H51.10082.09473.15361.78301.7830
H61.10082.09473.15361.78301.7830

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 110.751
C2 C1 H5 110.751 C2 C1 H6 110.751
H4 C1 H5 108.162 H4 C1 H6 108.162
H5 C1 H6 108.162
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.761      
2 C 0.091      
3 N -0.218      
4 H 0.296      
5 H 0.296      
6 H 0.296      


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 -3.940 3.940
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.547 0.000 0.000
y 0.000 -17.547 0.000
z 0.000 0.000 -20.535
Traceless
 xyz
x 1.494 0.000 0.000
y 0.000 1.494 0.000
z 0.000 0.000 -2.988
Polar
3z2-r2-5.977
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 2.839 0.000 0.000
y 0.000 2.839 0.000
z 0.000 0.000 5.444


<r2> (average value of r2) Å2
<r2> 44.824
(<r2>)1/2 6.695