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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-154.981796
Energy at 298.15K-154.988508
HF Energy-154.981796
Nuclear repulsion energy84.244487
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 3169 3005 28.00 93.52 0.35 0.51
2 A1 3017 2861 59.02 209.81 0.03 0.06
3 A1 1555 1475 0.85 20.61 0.74 0.85
4 A1 1524 1445 0.06 15.94 0.74 0.85
5 A1 1289 1222 5.00 3.10 0.60 0.75
6 A1 990 938 36.32 8.71 0.44 0.61
7 A1 418 396 2.60 0.46 0.03 0.05
8 A2 3062 2903 0.00 15.28 0.75 0.86
9 A2 1516 1438 0.00 40.80 0.75 0.86
10 A2 1183 1122 0.00 7.83 0.75 0.86
11 A2 225 213 0.00 0.24 0.75 0.86
12 B1 3057 2899 151.35 99.04 0.75 0.86
13 B1 1526 1447 12.10 0.37 0.75 0.86
14 B1 1217 1154 6.06 3.30 0.75 0.86
15 B1 258 245 6.59 0.06 0.75 0.86
16 B2 3167 3004 33.41 75.11 0.75 0.86
17 B2 3003 2848 57.77 1.63 0.75 0.86
18 B2 1533 1454 15.02 3.61 0.75 0.86
19 B2 1489 1412 7.07 9.84 0.75 0.86
20 B2 1246 1182 126.43 0.11 0.75 0.86
21 B2 1153 1093 18.20 4.72 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17797.7 cm-1
Scaled (by 0.9483) Zero Point Vibrational Energy (zpe) 16877.5 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 mPW1PW91/6-31G*
ABC
1.31216 0.33886 0.30002

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 1.161 -0.194
C3 0.000 -1.161 -0.194
H4 0.000 2.014 0.487
H5 0.000 -2.014 0.487
H6 0.891 1.220 -0.838
H7 -0.891 1.220 -0.838
H8 -0.891 -1.220 -0.838
H9 0.891 -1.220 -0.838

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.40071.40072.01692.01692.07862.07862.07862.0786
C21.40072.32241.09173.24781.10121.10122.62322.6232
C31.40072.32243.24781.09172.62322.62321.10121.1012
H42.01691.09173.24784.02871.78331.78333.60753.6075
H52.01693.24781.09174.02873.60753.60751.78331.7833
H62.07861.10122.62321.78333.60751.78293.02272.4409
H72.07861.10122.62321.78333.60751.78292.44093.0227
H82.07862.62321.10123.60751.78333.02272.44091.7829
H92.07862.62321.10123.60751.78332.44093.02271.7829

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 107.394 O1 C2 H6 111.811
O1 C2 H7 111.811 O1 C3 H5 107.394
O1 C3 H8 111.811 O1 C3 H9 111.811
C2 O1 C3 111.993 H4 C2 H6 108.827
H4 C2 H7 108.827 H5 C3 H8 108.827
H5 C3 H9 108.827 H6 C2 H7 108.100
H8 C3 H9 108.100
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 -0.452      
2 C -0.259      
3 C -0.259      
4 H 0.184      
5 H 0.184      
6 H 0.150      
7 H 0.150      
8 H 0.150      
9 H 0.150      


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 -1.303 1.303
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.967 0.000 0.000
y 0.000 -16.861 0.000
z 0.000 0.000 -20.794
Traceless
 xyz
x -1.140 0.000 0.000
y 0.000 3.520 0.000
z 0.000 0.000 -2.380
Polar
3z2-r2-4.761
x2-y2-3.106
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.624 0.000 0.000
y 0.000 4.499 0.000
z 0.000 0.000 3.559


<r2> (average value of r2) Å2
<r2> 51.941
(<r2>)1/2 7.207