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

using model chemistry: mPW1PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-311G**
 hartrees
Energy at 0K-155.025723
Energy at 298.15K-155.032414
HF Energy-155.025723
Nuclear repulsion energy84.264050
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 mPW1PW91/6-311G**
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 3143 3007 27.08 101.20 0.33 0.49
2 A1 2992 2862 64.25 255.17 0.03 0.06
3 A1 1523 1457 2.66 12.44 0.75 0.85
4 A1 1495 1430 0.35 10.82 0.75 0.86
5 A1 1276 1221 5.58 1.81 0.55 0.71
6 A1 976 934 39.00 7.68 0.53 0.69
7 A1 411 394 2.20 0.51 0.04 0.08
8 A2 3035 2904 0.00 18.89 0.75 0.86
9 A2 1482 1417 0.00 28.68 0.75 0.86
10 A2 1168 1117 0.00 4.98 0.75 0.86
11 A2 217 208 0.00 0.42 0.75 0.86
12 B1 3030 2899 156.15 110.49 0.75 0.86
13 B1 1491 1426 15.38 0.00 0.75 0.86
14 B1 1200 1148 6.66 1.45 0.75 0.86
15 B1 250 239 6.39 0.03 0.75 0.86
16 B2 3141 3005 32.86 77.95 0.75 0.86
17 B2 2979 2850 58.12 2.27 0.75 0.86
18 B2 1500 1435 16.50 3.80 0.75 0.86
19 B2 1465 1401 3.10 6.50 0.75 0.86
20 B2 1227 1174 121.84 0.30 0.75 0.86
21 B2 1138 1089 21.68 3.19 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17568.5 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 16807.8 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 mPW1PW91/6-311G**
ABC
1.31627 0.33843 0.29986

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.588
C2 0.000 1.162 -0.194
C3 0.000 -1.162 -0.194
H4 0.000 2.015 0.484
H5 0.000 -2.015 0.484
H6 0.891 1.221 -0.836
H7 -0.891 1.221 -0.836
H8 -0.891 -1.221 -0.836
H9 0.891 -1.221 -0.836

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.40101.40102.01772.01772.07642.07642.07642.0764
C21.40102.32461.08973.24901.09961.09962.62362.6236
C31.40102.32463.24901.08972.62362.62361.09961.0996
H42.01771.08973.24904.03011.78001.78003.60643.6064
H52.01773.24901.08974.03013.60643.60641.78001.7800
H62.07641.09962.62361.78003.60641.78183.02222.4411
H72.07641.09962.62361.78003.60641.78182.44113.0222
H82.07642.62361.09963.60641.78003.02222.44111.7818
H92.07642.62361.09963.60641.78002.44113.02221.7818

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 107.550 O1 C2 H6 111.709
O1 C2 H7 111.709 O1 C3 H5 107.550
O1 C3 H8 111.709 O1 C3 H9 111.709
C2 O1 C3 112.115 H4 C2 H6 108.784
H4 C2 H7 108.784 H5 C3 H8 108.784
H5 C3 H9 108.784 H6 C2 H7 108.231
H8 C3 H9 108.231
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.353      
2 C -0.142      
3 C -0.142      
4 H 0.124      
5 H 0.124      
6 H 0.097      
7 H 0.097      
8 H 0.097      
9 H 0.097      


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 -1.306 1.306
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.099 0.000 0.000
y 0.000 -17.065 0.000
z 0.000 0.000 -21.052
Traceless
 xyz
x -1.041 0.000 0.000
y 0.000 3.511 0.000
z 0.000 0.000 -2.470
Polar
3z2-r2-4.941
x2-y2-3.034
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.903 0.000 0.000
y 0.000 4.869 0.000
z 0.000 0.000 3.849


<r2> (average value of r2) Å2
<r2> 52.070
(<r2>)1/2 7.216