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All results from a given calculation for CH3CN (Acetonitrile)

using model chemistry: B1B95/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B1B95/cc-pVDZ
 hartrees
Energy at 0K-132.699876
Energy at 298.15K-132.702486
HF Energy-132.699876
Nuclear repulsion energy58.453259
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 B1B95/cc-pVDZ
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 3085 2966 2.44 153.05 0.00 0.00
2 A1 2408 2315 10.73 51.58 0.27 0.43
3 A1 1385 1331 1.95 8.06 0.61 0.75
4 A1 960 923 1.37 4.23 0.16 0.27
5 E 3180 3057 0.14 69.60 0.75 0.86
5 E 3180 3057 0.14 69.60 0.75 0.86
6 E 1444 1388 11.55 12.43 0.75 0.86
6 E 1444 1388 11.55 12.43 0.75 0.86
7 E 1040 999 3.28 0.01 0.75 0.86
7 E 1040 999 3.28 0.01 0.75 0.86
8 E 389 374 0.13 2.86 0.75 0.86
8 E 389 374 0.13 2.86 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9971.5 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 9584.6 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 B1B95/cc-pVDZ
ABC
5.26222 0.30809 0.30809

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.175
C2 0.000 0.000 0.277
N3 0.000 0.000 1.435
H4 0.000 1.029 -1.553
H5 0.891 -0.515 -1.553
H6 -0.891 -0.515 -1.553

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.45272.61051.09651.09651.0965
C21.45271.15782.10002.10002.1000
N32.61051.15783.16053.16053.1605
H41.09652.10003.16051.78291.7829
H51.09652.10003.16051.78291.7829
H61.09652.10003.16051.78291.7829

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 110.150
C2 C1 H5 110.150 C2 C1 H6 110.150
H4 C1 H5 108.784 H4 C1 H6 108.784
H5 C1 H6 108.784
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.008      
2 C -0.138      
3 N -0.127      
4 H 0.091      
5 H 0.091      
6 H 0.091      


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 -3.762 3.762
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.252 0.000 0.000
y 0.000 -17.252 0.000
z 0.000 0.000 -20.038
Traceless
 xyz
x 1.393 0.000 0.000
y 0.000 1.393 0.000
z 0.000 0.000 -2.787
Polar
3z2-r2-5.573
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 2.709 0.000 0.000
y 0.000 2.709 0.000
z 0.000 0.000 5.143


<r2> (average value of r2) Å2
<r2> 44.938
(<r2>)1/2 6.704