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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: CID/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at CID/6-311G*
 hartrees
Energy at 0K-132.351387
Energy at 298.15K-132.354040
HF Energy-131.955227
Nuclear repulsion energy58.629293
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 CID/6-311G*
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 3147 2924 3.66      
2 A1 2461 2286 4.00      
3 A1 1483 1378 3.56      
4 A1 957 889 4.30      
5 E 3232 3003 2.19      
5 E 3232 3003 2.19      
6 E 1543 1434 12.61      
6 E 1543 1434 12.61      
7 E 1114 1035 2.10      
7 E 1114 1035 2.10      
8 E 397 369 0.49      
8 E 397 369 0.49      

Unscaled Zero Point Vibrational Energy (zpe) 10310.7 cm-1
Scaled (by 0.9291) Zero Point Vibrational Energy (zpe) 9579.7 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 CID/6-311G*
ABC
5.33869 0.30841 0.30841

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/6-311G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.179
C2 0.000 0.000 0.284
N3 0.000 0.000 1.431
H4 0.000 1.022 -1.550
H5 0.885 -0.511 -1.550
H6 -0.885 -0.511 -1.550

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46312.61031.08721.08721.0872
C21.46311.14722.09972.09972.0997
N32.61031.14723.15173.15173.1517
H41.08722.09973.15171.77011.7701
H51.08722.09973.15171.77011.7701
H61.08722.09973.15171.77011.7701

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 109.957
C2 C1 H5 109.957 C2 C1 H6 109.957
H4 C1 H5 108.981 H4 C1 H6 108.981
H5 C1 H6 108.981
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability