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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: CCD/daug-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 CCD/daug-cc-pVDZ
 hartrees
Energy at 0K-132.401124
Energy at 298.15K-132.403696
HF Energy-131.941742
Nuclear repulsion energy57.839351
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 CCD/daug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3071 3071 4.62      
2 A1 2346 2346 1.53      
3 A1 1404 1404 0.23      
4 A1 933 933 2.38      
5 E 3161 3161 1.94      
5 E 3161 3161 1.94      
6 E 1472 1472 8.73      
6 E 1472 1472 8.73      
7 E 1060 1060 0.70      
7 E 1060 1060 0.70      
8 E 366 366 0.68      
8 E 366 366 0.68      

Unscaled Zero Point Vibrational Energy (zpe) 9934.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9934.4 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 CCD/daug-cc-pVDZ
ABC
5.20478 0.30052 0.30052

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.194
C2 0.000 0.000 0.284
N3 0.000 0.000 1.452
H4 0.000 1.035 -1.566
H5 0.896 -0.518 -1.566
H6 -0.896 -0.518 -1.566

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.47762.64591.09991.09991.0999
C21.47761.16832.11972.11972.1197
N32.64591.16833.19063.19063.1906
H41.09992.11973.19061.79271.7927
H51.09992.11973.19061.79271.7927
H61.09992.11973.19061.79271.7927

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 109.781
C2 C1 H5 109.781 C2 C1 H6 109.781
H4 C1 H5 109.160 H4 C1 H6 109.160
H5 C1 H6 109.160
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability