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: wB97X-D/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at wB97X-D/6-311G**
 hartrees
Energy at 0K-155.016756
Energy at 298.15K-155.023473
HF Energy-155.016756
Nuclear repulsion energy84.212604
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 wB97X-D/6-311G**
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 3136 2999 28.26 99.77 0.33 0.50
2 A1 2980 2851 65.57 257.29 0.03 0.06
3 A1 1526 1460 2.44 11.08 0.75 0.86
4 A1 1501 1435 0.54 12.69 0.75 0.86
5 A1 1281 1225 6.22 1.92 0.60 0.75
6 A1 977 934 39.70 7.91 0.53 0.70
7 A1 427 408 2.34 0.47 0.03 0.06
8 A2 3026 2894 0.00 17.84 0.75 0.86
9 A2 1485 1420 0.00 28.96 0.75 0.86
10 A2 1173 1122 0.00 5.01 0.75 0.86
11 A2 214 205 0.00 0.41 0.75 0.86
12 B1 3020 2889 161.83 113.48 0.75 0.86
13 B1 1496 1431 15.91 0.00 0.75 0.86
14 B1 1206 1154 7.65 1.30 0.75 0.86
15 B1 260 248 6.43 0.02 0.75 0.86
16 B2 3134 2998 34.46 78.22 0.75 0.86
17 B2 2969 2840 57.18 2.14 0.75 0.86
18 B2 1502 1437 16.65 3.68 0.75 0.86
19 B2 1471 1407 3.36 6.35 0.75 0.86
20 B2 1234 1180 124.98 0.30 0.75 0.86
21 B2 1142 1092 22.51 3.23 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17578.2 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 16813.5 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 wB97X-D/6-311G**
ABC
1.31567 0.33790 0.29949

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.588
C2 0.000 1.163 -0.194
C3 0.000 -1.163 -0.194
H4 0.000 2.016 0.485
H5 0.000 -2.016 0.485
H6 0.892 1.220 -0.836
H7 -0.892 1.220 -0.836
H8 -0.892 -1.220 -0.836
H9 0.892 -1.220 -0.836

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.40181.40182.01912.01912.07672.07672.07672.0767
C21.40182.32691.09033.25161.10061.10062.62472.6247
C31.40182.32693.25161.09032.62472.62471.10061.1006
H42.01911.09033.25164.03291.78221.78223.60793.6079
H52.01913.25161.09034.03293.60793.60791.78221.7822
H62.07671.10062.62471.78223.60791.78383.02262.4401
H72.07671.10062.62471.78223.60791.78382.44013.0226
H82.07672.62471.10063.60791.78223.02262.44011.7838
H92.07672.62471.10063.60791.78222.44013.02261.7838

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 107.569 O1 C2 H6 111.608
O1 C2 H7 111.608 O1 C3 H5 107.569
O1 C3 H8 111.608 O1 C3 H9 111.608
C2 O1 C3 112.192 H4 C2 H6 108.863
H4 C2 H7 108.863 H5 C3 H8 108.863
H5 C3 H9 108.863 H6 C2 H7 108.263
H8 C3 H9 108.263
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.350      
2 C -0.132      
3 C -0.132      
4 H 0.123      
5 H 0.123      
6 H 0.092      
7 H 0.092      
8 H 0.092      
9 H 0.092      


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 -1.325 1.325
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.108 0.000 0.000
y 0.000 -17.032 0.000
z 0.000 0.000 -21.087
Traceless
 xyz
x -1.049 0.000 0.000
y 0.000 3.566 0.000
z 0.000 0.000 -2.517
Polar
3z2-r2-5.035
x2-y2-3.076
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.928 0.000 0.000
y 0.000 4.822 0.000
z 0.000 0.000 3.853


<r2> (average value of r2) Å2
<r2> 52.120
(<r2>)1/2 7.219