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/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-154.189713
Energy at 298.15K-154.194494
HF Energy-154.189713
Nuclear repulsion energy76.716304
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/aug-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 A 3214 3194 8.97      
2 A 3087 3069 14.18      
3 A 3052 3033 20.71      
4 A 3004 2986 48.03      
5 A 2935 2918 60.69      
6 A 1429 1420 15.17      
7 A 1414 1406 7.20      
8 A 1406 1397 9.11      
9 A 1381 1372 0.50      
10 A 1241 1233 127.31      
11 A 1198 1190 20.28      
12 A 1111 1104 1.46      
13 A 1086 1079 3.92      
14 A 933 928 31.20      
15 A 476 473 55.64      
16 A 423 420 5.04      
17 A 285 283 3.02      
18 A 163 162 2.21      

Unscaled Zero Point Vibrational Energy (zpe) 13918.0 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 13833.1 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/aug-cc-pVDZ
ABC
1.53661 0.35310 0.30526

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.093 -0.552 -0.033
C2 -1.143 0.171 0.011
C3 1.206 0.230 0.060
H4 -1.949 -0.572 -0.105
H5 -1.250 0.697 0.982
H6 -1.192 0.910 -0.816
H7 2.144 -0.327 -0.029
H8 1.128 1.297 -0.194

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8
O11.43221.36352.04302.09582.09762.06392.1245
C21.43222.35031.10231.10911.11013.32492.5426
C31.36352.35033.25952.66512.64251.09441.0996
H42.04301.10233.25951.81041.80914.10133.6007
H52.09581.10912.66511.81041.81183.68672.7201
H62.09761.11012.64251.80911.81183.64452.4332
H72.06393.32491.09444.10133.68673.64451.9226
H82.12452.54261.09963.60072.72012.43321.9226

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 106.706 O1 C2 H5 110.474
O1 C2 H6 110.550 O1 C3 H7 113.773
O1 C3 H8 118.825 C2 O1 C3 114.405
H4 C2 H5 109.909 H4 C2 H6 109.706
H5 C2 H6 109.460 H7 C3 H8 122.409
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.348      
2 C 0.876      
3 C 0.699      
4 H -0.350      
5 H -0.138      
6 H -0.142      
7 H -0.354      
8 H -0.242      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.996 0.834 -0.304 1.334
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.604 -0.251 -0.470
y -0.251 -20.211 -0.347
z -0.470 -0.347 -21.285
Traceless
 xyz
x 3.143 -0.251 -0.470
y -0.251 -0.767 -0.347
z -0.470 -0.347 -2.377
Polar
3z2-r2-4.754
x2-y22.607
xy-0.251
xz-0.470
yz-0.347


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.622 0.045 -0.017
y 0.045 4.900 0.004
z -0.017 0.004 5.242


<r2> (average value of r2) Å2
<r2> 49.659
(<r2>)1/2 7.047