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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: TPSSh/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 TPSSh/6-311G*
 hartrees
Energy at 0K-132.791102
Energy at 298.15K-132.793703
HF Energy-132.791102
Nuclear repulsion energy58.441199
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 TPSSh/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 3054 2941 5.50 147.19 0.00 0.00
2 A1 2344 2258 7.23 54.97 0.27 0.42
3 A1 1429 1377 2.78 10.03 0.63 0.78
4 A1 928 894 1.72 3.62 0.15 0.26
5 E 3127 3012 4.53 69.76 0.75 0.86
5 E 3127 3012 4.53 69.75 0.75 0.86
6 E 1503 1448 11.07 11.92 0.75 0.86
6 E 1503 1448 11.07 11.92 0.75 0.86
7 E 1073 1034 2.15 0.03 0.75 0.86
7 E 1073 1034 2.15 0.03 0.75 0.86
8 E 382 368 0.16 3.78 0.75 0.86
8 E 382 368 0.16 3.77 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9963.6 cm-1
Scaled (by 0.9632) Zero Point Vibrational Energy (zpe) 9597.0 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 TPSSh/6-311G*
ABC
5.30909 0.30718 0.30718

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

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 0.280
N3 0.000 0.000 1.437
H4 0.000 1.025 -1.555
H5 0.887 -0.512 -1.555
H6 -0.887 -0.512 -1.555

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45812.61491.09201.09201.0920
C21.45811.15672.10192.10192.1019
N32.61491.15673.16263.16263.1626
H41.09202.10193.16261.77501.7750
H51.09202.10193.16261.77501.7750
H61.09202.10193.16261.77501.7750

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 110.201
C2 C1 H5 110.201 C2 C1 H6 110.201
H4 C1 H5 108.731 H4 C1 H6 108.731
H5 C1 H6 108.731
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.625      
2 C 0.148      
3 N -0.296      
4 H 0.258      
5 H 0.258      
6 H 0.258      


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 -3.865 3.865
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.776 0.000 0.000
y 0.000 2.776 0.000
z 0.000 0.000 5.308


<r2> (average value of r2) Å2
<r2> 45.190
(<r2>)1/2 6.722