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: PBEPBE/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 PBEPBE/6-311G*
 hartrees
Energy at 0K-154.859024
Energy at 298.15K-154.865683
HF Energy-154.859024
Nuclear repulsion energy83.554833
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/6-311G*
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 3055 3023 30.44 104.87 0.33 0.49
2 A1 2895 2865 74.41 253.85 0.03 0.06
3 A1 1488 1473 2.33 16.24 0.74 0.85
4 A1 1453 1438 0.04 12.39 0.75 0.86
5 A1 1235 1222 3.99 2.08 0.66 0.79
6 A1 931 921 37.56 7.05 0.57 0.73
7 A1 407 403 1.92 0.69 0.07 0.13
8 A2 2930 2900 0.00 26.62 0.75 0.86
9 A2 1443 1428 0.00 33.35 0.75 0.86
10 A2 1133 1121 0.00 7.02 0.75 0.86
11 A2 227 225 0.00 0.66 0.75 0.86
12 B1 2924 2894 186.44 125.02 0.75 0.86
13 B1 1453 1438 16.16 0.01 0.75 0.86
14 B1 1164 1152 5.72 1.79 0.75 0.86
15 B1 255 253 6.08 0.03 0.75 0.86
16 B2 3053 3021 35.68 84.33 0.75 0.86
17 B2 2879 2849 68.16 4.52 0.75 0.86
18 B2 1465 1449 18.76 5.46 0.75 0.86
19 B2 1424 1410 2.49 9.40 0.75 0.86
20 B2 1165 1153 88.71 0.02 0.75 0.86
21 B2 1100 1088 41.27 3.66 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17039.5 cm-1
Scaled (by 0.9896) Zero Point Vibrational Energy (zpe) 16862.3 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/6-311G*
ABC
1.28029 0.33459 0.29554

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.599
C2 0.000 1.169 -0.198
C3 0.000 -1.169 -0.198
H4 0.000 2.028 0.486
H5 0.000 -2.028 0.486
H6 0.898 1.226 -0.847
H7 -0.898 1.226 -0.847
H8 -0.898 -1.226 -0.847
H9 0.898 -1.226 -0.847

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.41431.41432.03122.03122.09732.09732.09732.0973
C21.41432.33741.09863.26921.10971.10972.63852.6385
C31.41432.33743.26921.09862.63852.63851.10971.1097
H42.03121.09863.26924.05631.79671.79673.62943.6294
H52.03123.26921.09864.05633.62943.62941.79671.7967
H62.09731.10972.63851.79673.62941.79693.03962.4516
H72.09731.10972.63851.79673.62941.79692.45163.0396
H82.09732.63851.10973.62941.79673.03962.45161.7969
H92.09732.63851.10973.62941.79672.45163.03961.7969

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 107.198 O1 C2 H6 111.825
O1 C2 H7 111.825 O1 C3 H5 107.198
O1 C3 H8 111.825 O1 C3 H9 111.825
C2 O1 C3 111.451 H4 C2 H6 108.899
H4 C2 H7 108.899 H5 C3 H8 108.899
H5 C3 H9 108.899 H6 C2 H7 108.125
H8 C3 H9 108.125
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.284      
2 C -0.457      
3 C -0.457      
4 H 0.219      
5 H 0.219      
6 H 0.190      
7 H 0.190      
8 H 0.190      
9 H 0.190      


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 -1.198 1.198
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.495 0.000 0.000
y 0.000 -17.454 0.000
z 0.000 0.000 -21.319
Traceless
 xyz
x -1.108 0.000 0.000
y 0.000 3.453 0.000
z 0.000 0.000 -2.345
Polar
3z2-r2-4.689
x2-y2-3.041
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.048 0.000 0.000
y 0.000 5.073 0.000
z 0.000 0.000 3.984


<r2> (average value of r2) Å2
<r2> 52.872
(<r2>)1/2 7.271