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: HSEh1PBE/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 2A
Energy calculated at HSEh1PBE/3-21G*
 hartrees
Energy at 0K-153.344033
Energy at 298.15K-153.348918
HF Energy-153.344033
Nuclear repulsion energy76.090857
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 HSEh1PBE/3-21G*
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 3294 3162 18.87      
2 A 3177 3049 15.57      
3 A 3132 3007 16.97      
4 A 3102 2978 44.98      
5 A 3038 2916 38.46      
6 A 1568 1505 13.97      
7 A 1551 1489 10.70      
8 A 1522 1461 3.12      
9 A 1479 1419 3.11      
10 A 1253 1203 103.71      
11 A 1232 1182 24.06      
12 A 1161 1114 0.38      
13 A 1122 1077 5.68      
14 A 935 897 19.87      
15 A 580 556 61.15      
16 A 417 400 5.63      
17 A 289 277 10.99      
18 A 174 167 2.61      

Unscaled Zero Point Vibrational Energy (zpe) 14511.5 cm-1
Scaled (by 0.9599) Zero Point Vibrational Energy (zpe) 13929.6 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 HSEh1PBE/3-21G*
ABC
1.52411 0.34390 0.29801

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.092 -0.556 -0.047
C2 -1.160 0.176 0.018
C3 1.224 0.236 0.069
H4 -1.949 -0.554 -0.171
H5 -1.301 0.629 1.006
H6 -1.197 0.965 -0.745
H7 2.145 -0.329 0.018
H8 1.181 1.273 -0.257

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8
O11.45241.38612.04502.11092.11342.06582.1388
C21.45242.38551.09071.09621.09873.34332.6000
C31.38612.38553.27832.72202.65671.08141.0879
H42.04501.09073.27831.79001.78924.10403.6246
H52.11091.09622.72201.79001.78663.71052.8587
H62.11341.09872.65671.78921.78663.66432.4472
H72.06583.34331.08144.10403.71053.66431.8895
H82.13882.60001.08793.62462.85872.44721.8895

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 106.177 O1 C2 H5 111.071
O1 C2 H6 111.117 O1 C3 H7 113.118
O1 C3 H8 119.158 C2 O1 C3 114.349
H4 C2 H5 109.867 H4 C2 H6 109.605
H5 C2 H6 108.970 H7 C3 H8 121.157
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.476      
2 C -0.377      
3 C -0.202      
4 H 0.237      
5 H 0.220      
6 H 0.208      
7 H 0.210      
8 H 0.180      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.915 1.281 -0.283 1.600
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.867 -0.201 -0.482
y -0.201 -19.568 -0.393
z -0.482 -0.393 -20.216
Traceless
 xyz
x 4.025 -0.201 -0.482
y -0.201 -1.526 -0.393
z -0.482 -0.393 -2.499
Polar
3z2-r2-4.997
x2-y23.701
xy-0.201
xz-0.482
yz-0.393


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.671 0.137 0.053
y 0.137 3.195 -0.122
z 0.053 -0.122 2.346


<r2> (average value of r2) Å2
<r2> 49.707
(<r2>)1/2 7.050