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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: CCSD/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 CCSD/6-311G**
 hartrees
Energy at 0K-132.425172
Energy at 298.15K-132.427767
HF Energy-131.958232
Nuclear repulsion energy58.215893
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 CCSD/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 3085 3085 4.90      
2 A1 2357 2357 0.72      
3 A1 1437 1437 0.98      
4 A1 933 933 2.72      
5 E 3168 3168 2.69      
5 E 3168 3168 2.69      
6 E 1504 1504 9.74      
6 E 1504 1504 9.74      
7 E 1079 1079 0.90      
7 E 1079 1079 0.90      
8 E 375 375 0.39      
8 E 375 375 0.39      

Unscaled Zero Point Vibrational Energy (zpe) 10032.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10032.1 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 CCSD/6-311G**
ABC
5.27301 0.30430 0.30430

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.187
C2 0.000 0.000 0.283
N3 0.000 0.000 1.442
H4 0.000 1.028 -1.557
H5 0.891 -0.514 -1.557
H6 -0.891 -0.514 -1.557

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46992.62911.09301.09301.0930
C21.46991.15922.10822.10822.1082
N32.62911.15923.17103.17103.1710
H41.09302.10823.17101.78111.7811
H51.09302.10823.17101.78111.7811
H61.09302.10823.17101.78111.7811

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 109.818
C2 C1 H5 109.818 C2 C1 H6 109.818
H4 C1 H5 109.122 H4 C1 H6 109.122
H5 C1 H6 109.122
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability