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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: HF/aug-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 HF/aug-cc-pVDZ
 hartrees
Energy at 0K-131.944262
Energy at 298.15K-131.946973
HF Energy-131.944262
Nuclear repulsion energy58.784572
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 HF/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3204 2917 5.33 176.64 0.00 0.00
2 A1 2589 2358 18.21 68.04 0.13 0.23
3 A1 1509 1374 0.07 2.40 0.45 0.62
4 A1 968 881 6.71 6.56 0.08 0.14
5 E 3291 2997 3.31 53.69 0.75 0.86
5 E 3291 2997 3.31 53.69 0.75 0.86
6 E 1568 1428 10.00 4.71 0.75 0.86
6 E 1568 1428 10.00 4.71 0.75 0.86
7 E 1143 1041 1.20 0.11 0.75 0.86
7 E 1143 1041 1.20 0.11 0.75 0.86
8 E 418 380 1.72 2.26 0.75 0.86
8 E 418 380 1.72 2.26 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10554.0 cm-1
Scaled (by 0.9106) Zero Point Vibrational Energy (zpe) 9610.4 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 HF/aug-cc-pVDZ
ABC
5.31129 0.30964 0.30964

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-cc-pVDZ

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 0.289
N3 0.000 0.000 1.425
H4 0.000 1.025 -1.544
H5 0.887 -0.512 -1.544
H6 -0.887 -0.512 -1.544

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46902.60551.08731.08731.0873
C21.46901.13642.09992.09992.0999
N32.60551.13643.14123.14123.1412
H41.08732.09993.14121.77461.7746
H51.08732.09993.14121.77461.7746
H61.08732.09993.14121.77461.7746

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 109.554
C2 C1 H5 109.554 C2 C1 H6 109.554
H4 C1 H5 109.388 H4 C1 H6 109.388
H5 C1 H6 109.388
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.433      
2 C -0.246      
3 N -0.322      
4 H 0.045      
5 H 0.045      
6 H 0.045      


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 -4.232 4.232
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.777 0.000 0.000
y 0.000 -17.777 0.000
z 0.000 0.000 -21.186
Traceless
 xyz
x 1.705 0.000 0.000
y 0.000 1.705 0.000
z 0.000 0.000 -3.409
Polar
3z2-r2-6.818
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 3.399 0.000 0.000
y 0.000 3.399 0.000
z 0.000 0.000 5.517


<r2> (average value of r2) Å2
<r2> 45.193
(<r2>)1/2 6.723