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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: BLYP/aug-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 BLYP/aug-cc-pVTZ
 hartrees
Energy at 0K-132.761127
Energy at 298.15K-132.763674
HF Energy-132.761127
Nuclear repulsion energy58.244460
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 BLYP/aug-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 2974 2964 4.11 208.08 0.01 0.01
2 A1 2264 2257 8.63 87.05 0.16 0.27
3 A1 1375 1371 1.58 8.52 0.36 0.53
4 A1 899 896 0.62 5.00 0.05 0.09
5 E 3033 3023 1.40 63.81 0.75 0.86
5 E 3033 3023 1.40 63.82 0.75 0.86
6 E 1439 1434 9.75 5.69 0.75 0.86
6 E 1439 1434 9.75 5.68 0.75 0.86
7 E 1035 1031 1.51 0.09 0.75 0.86
7 E 1035 1031 1.51 0.09 0.75 0.86
8 E 365 363 0.35 1.30 0.75 0.86
8 E 365 363 0.36 1.30 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9626.9 cm-1
Scaled (by 0.9966) Zero Point Vibrational Energy (zpe) 9594.2 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 BLYP/aug-cc-pVTZ
ABC
5.27570 0.30520 0.30520

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.181
C2 0.000 0.000 0.280
N3 0.000 0.000 1.442
H4 0.000 1.028 -1.562
H5 0.890 -0.514 -1.562
H6 -0.890 -0.514 -1.562

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46182.62301.09611.09611.0961
C21.46181.16122.10942.10942.1094
N32.62301.16123.17423.17423.1742
H41.09612.10943.17421.78061.7806
H51.09612.10943.17421.78061.7806
H61.09612.10943.17421.78061.7806

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 110.292
C2 C1 H5 110.292 C2 C1 H6 110.292
H4 C1 H5 108.638 H4 C1 H6 108.638
H5 C1 H6 108.638
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.425      
2 C 0.114      
3 N -0.348      
4 H 0.220      
5 H 0.220      
6 H 0.220      


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 -3.994 3.994
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.887 0.000 0.000
y 0.000 -17.887 0.000
z 0.000 0.000 -21.192
Traceless
 xyz
x 1.653 0.000 0.000
y 0.000 1.653 0.000
z 0.000 0.000 -3.305
Polar
3z2-r2-6.610
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 3.770 0.000 0.000
y 0.000 3.770 0.000
z 0.000 0.000 6.299


<r2> (average value of r2) Å2
<r2> 45.738
(<r2>)1/2 6.763