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 CH3OCH2 (methoxymethyl radical)

using model chemistry: HF/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 2A
Energy calculated at HF/CEP-121G
 hartrees
Energy at 0K-29.451195
Energy at 298.15K-29.456199
HF Energy-29.451195
Nuclear repulsion energy44.681893
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 HF/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 A 3394 3097 31.26      
2 A 3305 3016 38.97      
3 A 3235 2952 77.82      
4 A 3224 2941 42.08      
5 A 3146 2871 66.25      
6 A 1637 1494 10.83      
7 A 1629 1486 8.25      
8 A 1607 1467 0.89      
9 A 1559 1423 13.08      
10 A 1343 1226 74.38      
11 A 1323 1207 159.25      
12 A 1260 1150 4.55      
13 A 1190 1086 26.38      
14 A 990 903 34.74      
15 A 739 674 28.63      
16 A 420 383 6.09      
17 A 262 239 15.66      
18 A 173 158 3.09      

Unscaled Zero Point Vibrational Energy (zpe) 15217.5 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 13886.0 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 HF/CEP-121G
ABC
1.61880 0.33690 0.29649

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.084 -0.527 -0.060
C2 -1.171 0.169 0.023
C3 1.242 0.224 0.079
H4 -1.943 -0.565 -0.155
H5 -1.301 0.608 1.008
H6 -1.228 0.949 -0.734
H7 2.138 -0.369 0.043
H8 1.232 1.237 -0.300

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8
O11.43801.38752.02952.08512.08662.06242.1183
C21.43802.41491.07981.08601.08803.35262.6496
C31.38752.41493.28982.73472.69991.07441.0816
H42.02951.07983.28981.77211.77134.09013.6534
H52.08511.08602.73471.77211.77633.70272.9192
H62.08661.08802.69991.77131.77633.69712.5146
H72.06243.35261.07444.09013.70273.69711.8752
H82.11832.64961.08163.65342.91922.51461.8752

picture of methoxymethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H4 106.559 O1 C2 H5 110.630
O1 C2 H6 110.625 O1 C3 H7 113.185
O1 C3 H8 117.635 C2 O1 C3 117.442
H4 C2 H5 109.811 H4 C2 H6 109.586
H5 C2 H6 109.582 H7 C3 H8 120.853
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.403      
2 C -0.224      
3 C -0.076      
4 H 0.171      
5 H 0.148      
6 H 0.138      
7 H 0.141      
8 H 0.105      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.667 1.724 -0.201 1.859
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.716 -0.061 -0.486
y -0.061 -20.440 -0.558
z -0.486 -0.558 -20.484
Traceless
 xyz
x 4.746 -0.061 -0.486
y -0.061 -2.340 -0.558
z -0.486 -0.558 -2.406
Polar
3z2-r2-4.811
x2-y24.724
xy-0.061
xz-0.486
yz-0.558


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.433 0.088 0.003
y 0.088 3.453 -0.097
z 0.003 -0.097 2.999


<r2> (average value of r2) Å2
<r2> 43.515
(<r2>)1/2 6.597