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: PBEPBE/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 PBEPBE/6-31+G**
 hartrees
Energy at 0K-154.181168
Energy at 298.15K-154.186005
HF Energy-154.181168
Nuclear repulsion energy76.783457
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 PBEPBE/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 3215 3178 10.90      
2 A 3092 3057 14.86      
3 A 3057 3022 23.36      
4 A 3009 2974 50.01      
5 A 2943 2909 63.16      
6 A 1455 1438 18.66      
7 A 1445 1429 5.83      
8 A 1438 1422 7.93      
9 A 1408 1392 1.41      
10 A 1254 1240 137.44      
11 A 1210 1196 18.01      
12 A 1127 1114 1.43      
13 A 1101 1088 5.20      
14 A 939 928 33.28      
15 A 541 535 62.25      
16 A 419 414 4.29      
17 A 295 292 6.21      
18 A 164 162 2.92      

Unscaled Zero Point Vibrational Energy (zpe) 14054.8 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 13894.6 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 PBEPBE/6-31+G**
ABC
1.54835 0.35237 0.30540

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.092 -0.548 -0.040
C2 -1.144 0.170 0.014
C3 1.208 0.230 0.068
H4 -1.945 -0.568 -0.130
H5 -1.263 0.666 0.995
H6 -1.191 0.930 -0.790
H7 2.137 -0.334 -0.021
H8 1.141 1.284 -0.227

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8
O11.43061.36392.03942.09312.09582.05592.1189
C21.43062.35281.09891.10551.10693.31942.5531
C31.36392.35283.25802.67472.64171.09051.0965
H42.03941.09893.25801.80351.80204.09003.6003
H52.09311.10552.67471.80351.80573.68682.7666
H62.09581.10692.64171.80201.80573.64162.4249
H72.05593.31941.09054.09003.68683.64161.9107
H82.11892.55311.09653.60032.76662.42491.9107

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 106.726 O1 C2 H5 110.587
O1 C2 H6 110.722 O1 C3 H7 113.312
O1 C3 H8 118.502 C2 O1 C3 114.671
H4 C2 H5 109.801 H4 C2 H6 109.563
H5 C2 H6 109.405 H7 C3 H8 121.771
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.198      
2 C -0.330      
3 C -0.260      
4 H 0.174      
5 H 0.170      
6 H 0.160      
7 H 0.152      
8 H 0.133      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.037 1.008 -0.375 1.494
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.277 -0.238 -0.586
y -0.238 -20.248 -0.453
z -0.586 -0.453 -21.410
Traceless
 xyz
x 3.552 -0.238 -0.586
y -0.238 -0.904 -0.453
z -0.586 -0.453 -2.648
Polar
3z2-r2-5.295
x2-y22.971
xy-0.238
xz-0.586
yz-0.453


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.840 0.164 0.008
y 0.164 4.223 0.029
z 0.008 0.029 4.556


<r2> (average value of r2) Å2
<r2> 49.609
(<r2>)1/2 7.043