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 CH3O (Methoxy radical)

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 C1 2A'
Energy calculated at wB97X-D/6-31+G**
 hartrees
Energy at 0K-115.020185
Energy at 298.15K-115.023074
HF Energy-115.020185
Nuclear repulsion energy34.389537
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 A 3069 2923 30.13      
2 A 3025 2881 38.72      
3 A 2940 2800 0.31      
4 A 1535 1462 6.63      
5 A 1389 1323 23.21      
6 A 1388 1321 17.60      
7 A 1146 1091 10.01      
8 A 977 930 0.50      
9 A 808 770 67.29      

Unscaled Zero Point Vibrational Energy (zpe) 8138.4 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 7750.2 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
5.23442 0.93509 0.92890

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.581 0.000 -0.011
O2 0.794 0.000 -0.008
H3 -0.869 -0.009 1.055
H4 -0.999 0.913 -0.457
H5 -1.000 -0.905 -0.472

Atom - Atom Distances (Å)
  C1 O2 H3 H4 H5
C11.37521.10341.09901.0990
O21.37521.97342.06212.0622
H31.10341.97341.77571.7749
H41.09902.06211.77571.8183
H51.09902.06221.77491.8183

picture of Methoxy radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 C1 H3 105.006 O2 C1 H4 112.433
O2 C1 H5 112.436 H3 C1 H4 107.463
H3 C1 H5 107.386 H4 C1 H5 111.635
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 -0.260      
2 O -0.237      
3 H 0.185      
4 H 0.156      
5 H 0.156      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.249 -0.001 0.223 2.260
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.690 0.002 -0.237
y 0.002 -12.792 -0.004
z -0.237 -0.004 -11.618
Traceless
 xyz
x -1.485 0.002 -0.237
y 0.002 -0.138 -0.004
z -0.237 -0.004 1.623
Polar
3z2-r23.246
x2-y2-0.898
xy0.002
xz-0.237
yz-0.004


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.982 0.000 -0.017
y 0.000 2.612 0.002
z -0.017 0.002 2.219


<r2> (average value of r2) Å2
<r2> 20.868
(<r2>)1/2 4.568