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-pVQZ

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-pVQZ
 hartrees
Energy at 0K-132.763877
Energy at 298.15K 
HF Energy-132.763877
Nuclear repulsion energy58.784878
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-pVQZ
Rotational Constants (cm-1) from geometry optimized at wB97X-D/aug-cc-pVQZ
ABC
5.33061 0.31071 0.31071

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.173
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
C11.45472.60021.08791.08791.0879
C21.45471.14552.09272.09272.0927
N32.60021.14553.14233.14233.1423
H41.08792.09273.14231.77141.7714
H51.08792.09273.14231.77141.7714
H61.08792.09273.14231.77141.7714

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 109.941
C2 C1 H5 109.941 C2 C1 H6 109.941
H4 C1 H5 108.998 H4 C1 H6 108.998
H5 C1 H6 108.998
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.100      
2 C 0.288      
3 N -0.532      
4 H 0.115      
5 H 0.115      
6 H 0.115      


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 -4.059 4.059
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.507 0.000 0.000
y 0.000 -17.507 0.000
z 0.000 0.000 -20.722
Traceless
 xyz
x 1.607 0.000 0.000
y 0.000 1.607 0.000
z 0.000 0.000 -3.215
Polar
3z2-r2-6.430
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 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 44.884
(<r2>)1/2 6.700