return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: wB97X-D/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at wB97X-D/aug-cc-pVTZ
 hartrees
Energy at 0K-132.754683
Energy at 298.15K-132.757299
HF Energy-132.754683
Nuclear repulsion energy58.767367
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 wB97X-D/aug-cc-pVTZ
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 3075 2942 2.31 187.03 0.00 0.01
2 A1 2401 2297 12.32 74.95 0.14 0.25
3 A1 1416 1354 2.32 4.77 0.43 0.60
4 A1 937 896 1.47 5.41 0.05 0.09
5 E 3157 3020 0.46 54.04 0.75 0.86
5 E 3157 3020 0.47 54.15 0.75 0.86
6 E 1481 1416 11.43 4.83 0.75 0.86
6 E 1481 1416 11.45 4.87 0.75 0.86
7 E 1066 1020 2.11 0.10 0.75 0.86
7 E 1066 1020 2.11 0.10 0.75 0.86
8 E 387 370 0.63 1.42 0.75 0.86
8 E 386 370 0.63 1.43 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10004.8 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 9570.6 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 wB97X-D/aug-cc-pVTZ
ABC
5.32834 0.31055 0.31055

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/aug-cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.174
C2 0.000 0.000 0.281
N3 0.000 0.000 1.427
H4 0.000 1.023 -1.545
H5 0.886 -0.511 -1.545
H6 -0.886 -0.511 -1.545

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45472.60091.08821.08821.0882
C21.45471.14622.09292.09292.0929
N32.60091.14623.14323.14323.1432
H41.08822.09293.14321.77181.7718
H51.08822.09293.14321.77181.7718
H61.08822.09293.14321.77181.7718

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 109.944
C2 C1 H5 109.944 C2 C1 H6 109.944
H4 C1 H5 108.994 H4 C1 H6 108.994
H5 C1 H6 108.994
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.449      
2 C 0.108      
3 N -0.437      
4 H 0.259      
5 H 0.259      
6 H 0.259      


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 -4.057 4.057
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.516 0.000 0.000
y 0.000 -17.516 0.000
z 0.000 0.000 -20.744
Traceless
 xyz
x 1.614 0.000 0.000
y 0.000 1.614 0.000
z 0.000 0.000 -3.228
Polar
3z2-r2-6.457
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.601 0.000 0.000
y 0.000 3.601 -0.000
z 0.000 -0.000 5.864


<r2> (average value of r2) Å2
<r2> 44.909
(<r2>)1/2 6.701