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/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-132.713418
Energy at 298.15K-132.716019
HF Energy-132.713418
Nuclear repulsion energy58.405497
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/6-31+G**
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 3084 2937 3.04 161.72 0.00 0.00
2 A1 2401 2287 12.09 65.32 0.22 0.36
3 A1 1422 1355 4.18 8.25 0.69 0.82
4 A1 939 895 2.24 4.05 0.12 0.22
5 E 3176 3025 0.56 67.19 0.75 0.86
5 E 3176 3025 0.57 67.19 0.75 0.86
6 E 1485 1414 13.43 10.70 0.75 0.86
6 E 1485 1414 13.41 10.70 0.75 0.86
7 E 1066 1015 2.37 0.00 0.75 0.86
7 E 1066 1015 2.36 0.00 0.75 0.86
8 E 383 365 0.17 5.03 0.75 0.86
8 E 383 365 0.17 5.03 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10033.8 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 9555.2 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 wB97X-D/6-31+G**
ABC
5.28990 0.30682 0.30682

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31+G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.180
C2 0.000 0.000 0.280
N3 0.000 0.000 1.437
H4 0.000 1.027 -1.553
H5 0.889 -0.513 -1.553
H6 -0.889 -0.513 -1.553

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.46012.61761.09211.09211.0921
C21.46011.15742.10042.10042.1004
N32.61761.15743.16123.16123.1612
H41.09212.10043.16121.77821.7782
H51.09212.10043.16121.77821.7782
H61.09212.10043.16121.77821.7782

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 109.931
C2 C1 H5 109.931 C2 C1 H6 109.931
H4 C1 H5 109.008 H4 C1 H6 109.008
H5 C1 H6 109.008
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.492      
2 C 0.326      
3 N -0.467      
4 H 0.211      
5 H 0.211      
6 H 0.211      


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 -4.113 4.113
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.628 0.000 0.000
y 0.000 -17.628 0.000
z 0.000 0.000 -20.868
Traceless
 xyz
x 1.620 0.000 0.000
y 0.000 1.620 0.000
z 0.000 0.000 -3.240
Polar
3z2-r2-6.481
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 2.995 0.000 0.000
y 0.000 2.995 -0.000
z 0.000 -0.000 5.645


<r2> (average value of r2) Å2
<r2> 45.367
(<r2>)1/2 6.736