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All results from a given calculation for CH3OCH3 (Dimethyl ether)

using model chemistry: mPW1PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-31G**
 hartrees
Energy at 0K-154.989312
Energy at 298.15K-154.996018
HF Energy-154.989312
Nuclear repulsion energy84.218066
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 mPW1PW91/6-31G**
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 3161 3008 27.57 94.17 0.35 0.52
2 A1 3007 2861 57.40 217.18 0.03 0.06
3 A1 1539 1464 0.96 18.93 0.74 0.85
4 A1 1509 1435 0.06 16.14 0.74 0.85
5 A1 1281 1219 5.05 2.68 0.58 0.74
6 A1 986 938 35.80 8.43 0.44 0.61
7 A1 416 396 2.65 0.47 0.03 0.05
8 A2 3056 2908 0.00 15.75 0.75 0.86
9 A2 1498 1425 0.00 39.85 0.75 0.86
10 A2 1175 1118 0.00 6.98 0.75 0.86
11 A2 223 212 0.00 0.23 0.75 0.86
12 B1 3051 2903 146.45 97.87 0.75 0.86
13 B1 1508 1435 12.19 0.35 0.75 0.86
14 B1 1210 1151 5.73 3.06 0.75 0.86
15 B1 255 243 6.43 0.06 0.75 0.86
16 B2 3159 3006 31.63 74.94 0.75 0.86
17 B2 2994 2849 59.00 1.54 0.75 0.86
18 B2 1515 1441 14.78 3.55 0.75 0.86
19 B2 1475 1404 6.66 9.10 0.75 0.86
20 B2 1241 1181 128.07 0.15 0.75 0.86
21 B2 1146 1090 16.16 4.31 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17701.2 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 16842.7 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 mPW1PW91/6-31G**
ABC
1.31350 0.33832 0.29958

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.589
C2 0.000 1.162 -0.194
C3 0.000 -1.162 -0.194
H4 0.000 2.016 0.485
H5 0.000 -2.016 0.485
H6 0.890 1.223 -0.838
H7 -0.890 1.223 -0.838
H8 -0.890 -1.223 -0.838
H9 0.890 -1.223 -0.838

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.40131.40132.01892.01892.07972.07972.07972.0797
C21.40132.32411.09113.25001.10061.10062.62602.6260
C31.40132.32413.25001.09112.62602.62601.10061.1006
H42.01891.09113.25004.03231.78121.78123.61043.6104
H52.01893.25001.09114.03233.61043.61041.78121.7812
H62.07971.10062.62601.78123.61041.78063.02542.4459
H72.07971.10062.62601.78123.61041.78062.44593.0254
H82.07972.62601.10063.61041.78123.02542.44591.7806
H92.07972.62601.10063.61041.78122.44593.02541.7806

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 107.538 O1 C2 H6 111.896
O1 C2 H7 111.896 O1 C3 H5 107.538
O1 C3 H8 111.896 O1 C3 H9 111.896
C2 O1 C3 112.048 H4 C2 H6 108.719
H4 C2 H7 108.719 H5 C3 H8 108.719
H5 C3 H9 108.719 H6 C2 H7 107.989
H8 C3 H9 107.989
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.474      
2 C -0.128      
3 C -0.128      
4 H 0.142      
5 H 0.142      
6 H 0.112      
7 H 0.112      
8 H 0.112      
9 H 0.112      


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 -1.302 1.302
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.959 0.000 0.000
y 0.000 -16.835 0.000
z 0.000 0.000 -20.797
Traceless
 xyz
x -1.143 0.000 0.000
y 0.000 3.543 0.000
z 0.000 0.000 -2.400
Polar
3z2-r2-4.799
x2-y2-3.124
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.687 0.000 0.000
y 0.000 4.607 0.000
z 0.000 0.000 3.625


<r2> (average value of r2) Å2
<r2> 51.986
(<r2>)1/2 7.210