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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: BLYP/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 BLYP/6-311G*
 hartrees
Energy at 0K-132.741519
Energy at 298.15K-132.744082
HF Energy-132.741519
Nuclear repulsion energy58.111001
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 BLYP/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 2973 2966 5.70 151.38 0.00 0.00
2 A1 2271 2266 5.75 57.60 0.27 0.43
3 A1 1391 1388 4.02 12.24 0.61 0.76
4 A1 901 899 1.10 3.31 0.15 0.26
5 E 3034 3027 4.71 73.83 0.75 0.86
5 E 3034 3027 4.71 73.82 0.75 0.86
6 E 1456 1453 10.99 12.53 0.75 0.86
6 E 1456 1453 10.99 12.53 0.75 0.86
7 E 1045 1043 2.96 0.03 0.75 0.86
7 E 1045 1043 2.96 0.03 0.75 0.86
8 E 374 373 0.11 3.38 0.75 0.86
8 E 374 373 0.11 3.38 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9677.7 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 9653.5 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 BLYP/6-311G*
ABC
5.26423 0.30378 0.30378

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.183
C2 0.000 0.000 0.281
N3 0.000 0.000 1.445
H4 0.000 1.029 -1.568
H5 0.891 -0.515 -1.568
H6 -0.891 -0.515 -1.568

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46422.62811.09901.09901.0990
C21.46421.16392.11672.11672.1167
N32.62811.16393.18443.18443.1844
H41.09902.11673.18441.78251.7825
H51.09902.11673.18441.78251.7825
H61.09902.11673.18441.78251.7825

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 110.533
C2 C1 H5 110.533 C2 C1 H6 110.533
H4 C1 H5 108.389 H4 C1 H6 108.389
H5 C1 H6 108.389
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.621      
2 C 0.066      
3 N -0.191      
4 H 0.249      
5 H 0.249      
6 H 0.249      


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 -3.782 3.782
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.655 0.000 0.000
y 0.000 -17.655 0.000
z 0.000 0.000 -20.740
Traceless
 xyz
x 1.543 0.000 0.000
y 0.000 1.543 0.000
z 0.000 0.000 -3.085
Polar
3z2-r2-6.171
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 2.848 0.000 0.000
y 0.000 2.848 0.000
z 0.000 0.000 5.443


<r2> (average value of r2) Å2
<r2> 45.716
(<r2>)1/2 6.761