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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: B3PW91/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 B3PW91/cc-pVDZ
 hartrees
Energy at 0K-132.708305
Energy at 298.15K-132.710908
HF Energy-132.708305
Nuclear repulsion energy58.292218
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 B3PW91/cc-pVDZ
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 3063 2956 2.74      
2 A1 2380 2297 10.49      
3 A1 1381 1333 2.25      
4 A1 952 919 1.19      
5 E 3156 3046 0.17      
5 E 3156 3046 0.17      
6 E 1440 1390 11.87      
6 E 1440 1390 11.87      
7 E 1038 1002 3.38      
7 E 1038 1002 3.38      
8 E 387 373 0.10      
8 E 387 373 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 9909.4 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 9562.6 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 B3PW91/cc-pVDZ
ABC
5.23423 0.30646 0.30646

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.178
C2 0.000 0.000 0.278
N3 0.000 0.000 1.439
H4 0.000 1.032 -1.558
H5 0.894 -0.516 -1.558
H6 -0.894 -0.516 -1.558

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45582.61731.09971.09971.0997
C21.45581.16142.10582.10582.1058
N32.61731.16143.16973.16973.1697
H41.09972.10583.16971.78761.7876
H51.09972.10583.16971.78761.7876
H61.09972.10583.16971.78761.7876

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 110.198
C2 C1 H5 110.198 C2 C1 H6 110.198
H4 C1 H5 108.735 H4 C1 H6 108.735
H5 C1 H6 108.735
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.042      
2 C -0.122      
3 N -0.139      
4 H 0.101      
5 H 0.101      
6 H 0.101      


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 -3.786 3.786
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.264 0.000 0.000
y 0.000 -17.264 0.000
z 0.000 0.000 -20.062
Traceless
 xyz
x 1.399 0.000 0.000
y 0.000 1.399 0.000
z 0.000 0.000 -2.798
Polar
3z2-r2-5.596
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 2.722 0.000 0.000
y 0.000 2.722 0.000
z 0.000 0.000 5.194


<r2> (average value of r2) Å2
<r2> 45.130
(<r2>)1/2 6.718