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

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-31+G**
 hartrees
Energy at 0K-154.996052
Energy at 298.15K-155.002729
HF Energy-154.996052
Nuclear repulsion energy84.098191
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 mPW1PW91/6-31+G**
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 3165 3013 21.28 103.02 0.36 0.53
2 A1 3011 2866 69.07 256.31 0.02 0.05
3 A1 1524 1450 3.13 10.87 0.72 0.84
4 A1 1496 1424 0.46 7.87 0.73 0.84
5 A1 1274 1212 5.57 1.41 0.63 0.77
6 A1 973 927 41.20 8.00 0.35 0.52
7 A1 412 392 2.59 0.79 0.10 0.18
8 A2 3064 2916 0.00 20.46 0.75 0.86
9 A2 1491 1419 0.00 24.48 0.75 0.86
10 A2 1169 1113 0.00 4.21 0.75 0.86
11 A2 213 203 0.00 0.35 0.75 0.86
12 B1 3057 2910 135.74 120.02 0.75 0.86
13 B1 1501 1429 17.10 0.01 0.75 0.86
14 B1 1200 1142 7.20 0.45 0.75 0.86
15 B1 250 238 7.39 0.05 0.75 0.86
16 B2 3164 3012 29.55 75.17 0.75 0.86
17 B2 2999 2855 66.01 1.94 0.75 0.86
18 B2 1504 1432 15.96 1.72 0.75 0.86
19 B2 1468 1397 2.08 6.59 0.75 0.86
20 B2 1232 1173 127.09 0.47 0.75 0.86
21 B2 1138 1083 19.75 3.56 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17652.8 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 16801.9 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 mPW1PW91/6-31+G**
ABC
1.31777 0.33607 0.29821

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.586
C2 0.000 1.167 -0.194
C3 0.000 -1.167 -0.194
H4 0.000 2.017 0.490
H5 0.000 -2.017 0.490
H6 0.893 1.224 -0.835
H7 -0.893 1.224 -0.835
H8 -0.893 -1.224 -0.835
H9 0.893 -1.224 -0.835

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.40441.40442.01892.01892.07732.07732.07732.0773
C21.40442.33481.09083.25681.09991.09992.63202.6320
C31.40442.33483.25681.09082.63202.63201.09991.0999
H42.01891.09083.25684.03331.78301.78303.61343.6134
H52.01893.25681.09084.03333.61343.61341.78301.7830
H62.07731.09992.63201.78303.61341.78523.03062.4490
H72.07731.09992.63201.78303.61341.78522.44903.0306
H82.07732.63201.09993.61341.78303.03062.44901.7852
H92.07732.63201.09993.61341.78302.44903.03061.7852

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 107.354 O1 C2 H6 111.515
O1 C2 H7 111.515 O1 C3 H5 107.354
O1 C3 H8 111.515 O1 C3 H9 111.515
C2 O1 C3 112.447 H4 C2 H6 108.956
H4 C2 H7 108.956 H5 C3 H8 108.956
H5 C3 H9 108.956 H6 C2 H7 108.486
H8 C3 H9 108.486
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.314      
2 C -0.292      
3 C -0.292      
4 H 0.167      
5 H 0.167      
6 H 0.141      
7 H 0.141      
8 H 0.141      
9 H 0.141      


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 -1.449 1.449
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.294 0.000 0.000
y 0.000 -17.144 0.000
z 0.000 0.000 -21.485
Traceless
 xyz
x -0.979 0.000 0.000
y 0.000 3.745 0.000
z 0.000 0.000 -2.767
Polar
3z2-r2-5.533
x2-y2-3.149
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.114 0.000 0.000
y 0.000 4.981 0.000
z 0.000 0.000 4.128


<r2> (average value of r2) Å2
<r2> 52.410
(<r2>)1/2 7.239