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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: B2PLYP=FULLultrafine/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 B2PLYP=FULLultrafine/6-311G**
 hartrees
Energy at 0K-132.675712
Energy at 298.15K 
HF Energy-132.508585
Nuclear repulsion energy58.400859
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 B2PLYP=FULLultrafine/6-311G**
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 3078 3078 3.64 149.21 0.00 0.00
2 A1 2308 2308 2.32 45.10 0.27 0.42
3 A1 1426 1426 2.54 7.08 0.65 0.79
4 A1 933 933 1.72 3.88 0.16 0.27
5 E 3157 3157 1.75 64.96 0.75 0.86
5 E 3157 3157 1.75 64.96 0.75 0.86
6 E 1493 1493 11.25 10.65 0.75 0.86
6 E 1493 1493 11.25 10.65 0.75 0.86
7 E 1072 1072 2.18 0.01 0.75 0.86
7 E 1072 1072 2.18 0.01 0.75 0.86
8 E 381 381 0.25 3.48 0.75 0.86
8 E 381 381 0.25 3.48 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9975.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9975.7 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 B2PLYP=FULLultrafine/6-311G**
ABC
5.31726 0.30667 0.30667

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-311G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.180
C2 0.000 0.000 0.279
N3 0.000 0.000 1.438
H4 0.000 1.024 -1.554
H5 0.887 -0.512 -1.554
H6 -0.887 -0.512 -1.554

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45882.61811.09021.09021.0902
C21.45881.15942.09962.09962.0996
N32.61811.15943.16273.16273.1627
H41.09022.09963.16271.77361.7736
H51.09022.09963.16271.77361.7736
H61.09022.09963.16271.77361.7736

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 110.073
C2 C1 H5 110.073 C2 C1 H6 110.073
H4 C1 H5 108.863 H4 C1 H6 108.863
H5 C1 H6 108.863
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability