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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: PBE1PBE/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 PBE1PBE/cc-pVTZ
 hartrees
Energy at 0K-132.637691
Energy at 298.15K-132.640302
HF Energy-132.637691
Nuclear repulsion energy58.746345
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 PBE1PBE/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 3068 2948 1.70 169.17 0.00 0.00
2 A1 2393 2300 11.49 61.97 0.23 0.37
3 A1 1401 1346 3.50 6.07 0.52 0.68
4 A1 948 911 1.02 4.15 0.09 0.16
5 E 3148 3025 0.32 59.58 0.75 0.86
5 E 3148 3025 0.32 59.57 0.75 0.86
6 E 1465 1408 11.31 7.14 0.75 0.86
6 E 1465 1408 11.31 7.14 0.75 0.86
7 E 1052 1011 2.67 0.03 0.75 0.86
7 E 1052 1011 2.67 0.03 0.75 0.86
8 E 386 371 0.33 2.31 0.75 0.86
8 E 386 371 0.33 2.31 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9956.0 cm-1
Scaled (by 0.961) Zero Point Vibrational Energy (zpe) 9567.7 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 PBE1PBE/cc-pVTZ
ABC
5.31676 0.31083 0.31083

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.171
C2 0.000 0.000 0.278
N3 0.000 0.000 1.428
H4 0.000 1.024 -1.546
H5 0.887 -0.512 -1.546
H6 -0.887 -0.512 -1.546

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.44982.59911.09031.09031.0903
C21.44981.14942.09192.09192.0919
N32.59911.14943.14493.14493.1449
H41.09032.09193.14491.77371.7737
H51.09032.09193.14491.77371.7737
H61.09032.09193.14491.77371.7737

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 110.081
C2 C1 H5 110.081 C2 C1 H6 110.081
H4 C1 H5 108.854 H4 C1 H6 108.854
H5 C1 H6 108.854
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.262      
2 C -0.094      
3 N -0.056      
4 H 0.138      
5 H 0.138      
6 H 0.138      


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 -3.965 3.965
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.480 0.000 0.000
y 0.000 -17.480 0.000
z 0.000 0.000 -20.499
Traceless
 xyz
x 1.509 0.000 0.000
y 0.000 1.509 0.000
z 0.000 0.000 -3.019
Polar
3z2-r2-6.037
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 3.151 0.000 0.000
y 0.000 3.151 0.000
z 0.000 0.000 5.538


<r2> (average value of r2) Å2
<r2> 44.828
(<r2>)1/2 6.695