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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: HF/daug-cc-pVTZ

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/daug-cc-pVTZ
 hartrees
Energy at 0K-131.977156
Energy at 298.15K-131.979877
HF Energy-131.977156
Nuclear repulsion energy59.147138
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/daug-cc-pVTZ
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 3196 2891 4.65 175.21 0.00 0.00
2 A1 2590 2343 17.91 71.72 0.11 0.20
3 A1 1534 1387 0.10 2.52 0.44 0.61
4 A1 960 868 6.22 6.26 0.07 0.13
5 E 3271 2959 3.03 52.18 0.75 0.86
5 E 3271 2959 3.03 52.18 0.75 0.86
6 E 1594 1442 9.95 4.59 0.75 0.86
6 E 1594 1442 9.95 4.59 0.75 0.86
7 E 1160 1049 1.18 0.10 0.75 0.86
7 E 1160 1049 1.18 0.10 0.75 0.86
8 E 425 385 1.83 1.90 0.75 0.86
8 E 425 385 1.83 1.90 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10589.4 cm-1
Scaled (by 0.9046) Zero Point Vibrational Energy (zpe) 9579.2 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/daug-cc-pVTZ
ABC
5.38764 0.31301 0.31301

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.174
C2 0.000 0.000 0.290
N3 0.000 0.000 1.417
H4 0.000 1.017 -1.538
H5 0.881 -0.509 -1.538
H6 -0.881 -0.509 -1.538

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46422.59081.08031.08031.0803
C21.46421.12662.09172.09172.0917
N32.59081.12663.12443.12443.1244
H41.08032.09173.12441.76201.7620
H51.08032.09173.12441.76201.7620
H61.08032.09173.12441.76201.7620

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 109.660
C2 C1 H5 109.660 C2 C1 H6 109.660
H4 C1 H5 109.282 H4 C1 H6 109.282
H5 C1 H6 109.282
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.490      
2 C -0.453      
3 N -0.769      
4 H 0.571      
5 H 0.571      
6 H 0.571      


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 -4.202 4.202
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.691 0.000 0.000
y 0.000 -17.691 0.000
z 0.000 0.000 -21.064
Traceless
 xyz
x 1.687 0.000 0.000
y 0.000 1.687 0.000
z 0.000 0.000 -3.374
Polar
3z2-r2-6.747
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 3.420 0.000 0.000
y 0.000 3.420 0.000
z 0.000 0.000 5.435


<r2> (average value of r2) Å2
<r2> 44.773
(<r2>)1/2 6.691