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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: PBE1PBE/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at PBE1PBE/TZVP
 hartrees
Energy at 0K-132.636190
Energy at 298.15K-132.638805
HF Energy-132.636190
Nuclear repulsion energy58.725358
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 PBE1PBE/TZVP
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 3072 2948 1.90 171.78 0.00 0.00
2 A1 2402 2305 11.45 64.12 0.24 0.38
3 A1 1407 1350 5.41 7.20 0.61 0.76
4 A1 950 911 1.29 3.46 0.10 0.19
5 E 3155 3027 0.30 62.39 0.75 0.86
5 E 3155 3027 0.30 62.39 0.75 0.86
6 E 1470 1410 13.44 9.46 0.75 0.86
6 E 1470 1410 13.44 9.47 0.75 0.86
7 E 1057 1014 2.72 0.00 0.75 0.86
7 E 1057 1014 2.72 0.00 0.75 0.86
8 E 388 372 0.16 4.69 0.75 0.86
8 E 388 372 0.16 4.69 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9984.2 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 9580.8 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 PBE1PBE/TZVP
ABC
5.30895 0.31069 0.31069

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/TZVP

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 0.278
N3 0.000 0.000 1.428
H4 0.000 1.025 -1.546
H5 0.888 -0.512 -1.546
H6 -0.888 -0.512 -1.546

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.44972.59961.09121.09121.0912
C21.44971.15002.09262.09262.0926
N32.59961.15003.14613.14613.1461
H41.09122.09263.14611.77501.7750
H51.09122.09263.14611.77501.7750
H61.09122.09263.14611.77501.7750

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 110.091
C2 C1 H5 110.091 C2 C1 H6 110.091
H4 C1 H5 108.844 H4 C1 H6 108.844
H5 C1 H6 108.844
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.414      
2 C 0.008      
3 N -0.097      
4 H 0.168      
5 H 0.168      
6 H 0.168      


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 -4.009 4.009
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.546 0.000 0.000
y 0.000 -17.546 0.000
z 0.000 0.000 -20.809
Traceless
 xyz
x 1.631 0.000 0.000
y 0.000 1.631 0.000
z 0.000 0.000 -3.263
Polar
3z2-r2-6.525
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 2.981 0.000 0.000
y 0.000 2.981 0.000
z 0.000 0.000 5.553


<r2> (average value of r2) Å2
<r2> 44.938
(<r2>)1/2 6.704