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 CH3OCH3 (Dimethyl ether)

using model chemistry: M06-2X/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at M06-2X/3-21G
 hartrees
Energy at 0K-154.091940
Energy at 298.15K-154.098654
HF Energy-154.091940
Nuclear repulsion energy82.563849
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 M06-2X/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 A1 3159 3028 19.42 79.97 0.34 0.51
2 A1 3027 2902 33.71 173.54 0.04 0.07
3 A1 1595 1529 1.27 32.13 0.75 0.86
4 A1 1540 1477 0.73 11.35 0.72 0.84
5 A1 1263 1210 0.06 5.41 0.64 0.78
6 A1 927 888 20.83 13.05 0.34 0.51
7 A1 417 400 4.61 0.39 0.02 0.05
8 A2 3068 2941 0.00 10.71 0.75 0.86
9 A2 1556 1492 0.00 48.90 0.75 0.86
10 A2 1168 1120 0.00 10.48 0.75 0.86
11 A2 237 228 0.00 0.14 0.75 0.86
12 B1 3066 2939 110.38 78.66 0.75 0.86
13 B1 1564 1500 18.24 1.26 0.75 0.86
14 B1 1197 1147 2.81 4.64 0.75 0.86
15 B1 252 241 8.49 0.04 0.75 0.86
16 B2 3156 3026 18.07 64.95 0.75 0.86
17 B2 3020 2896 30.39 0.85 0.75 0.86
18 B2 1577 1512 15.73 4.14 0.75 0.86
19 B2 1498 1437 4.49 10.33 0.75 0.86
20 B2 1192 1143 67.03 0.01 0.75 0.86
21 B2 1119 1073 20.50 5.88 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17798.8 cm-1
Scaled (by 0.9587) Zero Point Vibrational Energy (zpe) 17063.7 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 M06-2X/3-21G
ABC
1.25279 0.32439 0.28560

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.613
C2 0.000 1.193 -0.206
C3 0.000 -1.193 -0.206
H4 0.000 2.041 0.479
H5 0.000 -2.041 0.479
H6 0.891 1.244 -0.847
H7 -0.891 1.244 -0.847
H8 -0.891 -1.244 -0.847
H9 0.891 -1.244 -0.847

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.44661.44662.04522.04522.11512.11512.11512.1151
C21.44662.38521.09043.30521.09891.09892.67252.6725
C31.44662.38523.30521.09042.67252.67251.09891.0989
H42.04521.09043.30524.08161.78561.78563.65303.6530
H52.04523.30521.09044.08163.65303.65301.78561.7856
H62.11511.09892.67251.78563.65301.78173.06032.4882
H72.11511.09892.67251.78563.65301.78172.48823.0603
H82.11512.67251.09893.65301.78563.06032.48821.7817
H92.11512.67251.09893.65301.78562.48823.06031.7817

picture of Dimethyl ether state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 H4 106.594 O1 C2 H6 111.654
O1 C2 H7 111.654 O1 C3 H5 106.594
O1 C3 H8 111.654 O1 C3 H9 111.654
C2 O1 C3 111.055 H4 C2 H6 109.290
H4 C2 H7 109.290 H5 C3 H8 109.290
H5 C3 H9 109.290 H6 C2 H7 108.315
H8 C3 H9 108.315
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.516      
2 C -0.312      
3 C -0.312      
4 H 0.215      
5 H 0.215      
6 H 0.177      
7 H 0.177      
8 H 0.177      
9 H 0.177      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -1.673 1.673
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.173 0.000 0.000
y 0.000 -16.405 0.000
z 0.000 0.000 -21.162
Traceless
 xyz
x -1.390 0.000 0.000
y 0.000 4.263 0.000
z 0.000 0.000 -2.873
Polar
3z2-r2-5.745
x2-y2-3.769
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.225 0.000 0.000
y 0.000 4.267 0.000
z 0.000 0.000 3.218


<r2> (average value of r2) Å2
<r2> 53.628
(<r2>)1/2 7.323