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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: LSDA/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-132.046818
Energy at 298.15K-132.049385
HF Energy-132.046818
Nuclear repulsion energy58.824302
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/6-311+G(3df,2p)
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 2981 2981 0.18      
2 A1 2333 2333 15.73      
3 A1 1335 1335 9.11      
4 A1 960 960 0.21      
5 E 3060 3060 0.64      
5 E 3060 3060 0.64      
6 E 1393 1393 14.33      
6 E 1393 1393 14.33      
7 E 997 997 4.45      
7 E 997 997 4.45      
8 E 378 378 0.21      
8 E 378 378 0.21      

Unscaled Zero Point Vibrational Energy (zpe) 9631.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9631.1 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/6-311+G(3df,2p)
ABC
5.26895 0.31341 0.31341

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/6-311+G(3df,2p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.161
C2 0.000 0.000 0.271
N3 0.000 0.000 1.425
H4 0.000 1.029 -1.546
H5 0.891 -0.514 -1.546
H6 -0.891 -0.514 -1.546

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.43192.58561.09841.09841.0984
C21.43191.15372.08802.08802.0880
N32.58561.15373.14373.14373.1437
H41.09842.08803.14371.78171.7817
H51.09842.08803.14371.78171.7817
H61.09842.08803.14371.78171.7817

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 110.523
C2 C1 H5 110.523 C2 C1 H6 110.523
H4 C1 H5 108.399 H4 C1 H6 108.399
H5 C1 H6 108.399
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.335      
2 C 0.683      
3 N -0.928      
4 H 0.194      
5 H 0.194      
6 H 0.194      


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 -4.118 4.118
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.700 0.000 0.000
y 0.000 -17.700 0.000
z 0.000 0.000 -20.833
Traceless
 xyz
x 1.566 0.000 0.000
y 0.000 1.566 0.000
z 0.000 0.000 -3.133
Polar
3z2-r2-6.266
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 3.625 0.000 0.000
y 0.000 3.625 0.000
z 0.000 0.000 6.185


<r2> (average value of r2) Å2
<r2> 44.787
(<r2>)1/2 6.692