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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: B3LYP/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B3LYP/CEP-121G
 hartrees
Energy at 0K-22.954592
Energy at 298.15K-22.957170
HF Energy-22.954592
Nuclear repulsion energy30.797265
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 B3LYP/CEP-121G
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 3016 2939 9.16 174.94 0.00 0.00
2 A1 2248 2190 6.87 57.59 0.22 0.36
3 A1 1442 1405 8.71 11.63 0.64 0.78
4 A1 910 886 4.18 5.68 0.14 0.25
5 E 3108 3029 7.75 70.70 0.75 0.86
5 E 3108 3029 7.76 70.71 0.75 0.86
6 E 1500 1461 16.56 15.46 0.75 0.86
6 E 1500 1461 16.56 15.46 0.75 0.86
7 E 1081 1053 1.87 0.24 0.75 0.86
7 E 1081 1053 1.87 0.24 0.75 0.86
8 E 366 357 0.15 5.57 0.75 0.86
8 E 366 357 0.15 5.57 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9861.7 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 9610.2 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 B3LYP/CEP-121G
ABC
5.27640 0.29703 0.29703

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.199
C2 0.000 0.000 0.280
N3 0.000 0.000 1.463
H4 0.000 1.028 -1.578
H5 0.890 -0.514 -1.578
H6 -0.890 -0.514 -1.578

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.47902.66191.09571.09571.0957
C21.47901.18292.12372.12372.1237
N32.66191.18293.21033.21033.2103
H41.09572.12373.21031.78051.7805
H51.09572.12373.21031.78051.7805
H61.09572.12373.21031.78051.7805

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 110.257
C2 C1 H5 110.257 C2 C1 H6 110.257
H4 C1 H5 108.674 H4 C1 H6 108.674
H5 C1 H6 108.674
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.557      
2 C -0.277      
3 N 0.228      
4 H 0.202      
5 H 0.202      
6 H 0.202      


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 -4.036 4.036
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.657 0.000 0.000
y 0.000 -17.657 0.000
z 0.000 0.000 -21.096
Traceless
 xyz
x 1.719 0.000 0.000
y 0.000 1.719 0.000
z 0.000 0.000 -3.439
Polar
3z2-r2-6.877
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 2.824 0.000 0.000
y 0.000 2.825 0.000
z 0.000 0.000 5.425


<r2> (average value of r2) Å2
<r2> 39.152
(<r2>)1/2 6.257