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: M06-2X/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 M06-2X/6-31G**
 hartrees
Energy at 0K-154.949186
Energy at 298.15K-154.955915
HF Energy-154.949186
Nuclear repulsion energy84.221628
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 M06-2X/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 3166 3009 26.20 97.25 0.34 0.51
2 A1 3017 2868 52.90 210.56 0.03 0.06
3 A1 1538 1462 0.68 21.41 0.75 0.86
4 A1 1510 1436 0.02 15.67 0.75 0.85
5 A1 1284 1220 7.98 3.10 0.55 0.71
6 A1 1000 950 36.16 9.62 0.43 0.60
7 A1 430 409 2.92 0.48 0.01 0.02
8 A2 3067 2915 0.00 11.89 0.75 0.86
9 A2 1501 1427 0.00 41.39 0.75 0.86
10 A2 1177 1119 0.00 6.98 0.75 0.86
11 A2 217 207 0.00 0.19 0.75 0.86
12 B1 3062 2910 139.02 94.30 0.75 0.86
13 B1 1512 1437 11.57 0.52 0.75 0.86
14 B1 1210 1150 8.00 3.64 0.75 0.86
15 B1 265 252 6.25 0.09 0.75 0.86
16 B2 3165 3008 31.22 74.66 0.75 0.86
17 B2 3007 2858 47.95 0.67 0.75 0.86
18 B2 1516 1441 13.39 2.78 0.75 0.86
19 B2 1474 1401 7.09 9.62 0.75 0.86
20 B2 1258 1196 135.60 0.42 0.75 0.86
21 B2 1147 1090 11.09 4.14 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17762.0 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 16881.0 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 M06-2X/6-31G**
ABC
1.30621 0.33935 0.30007

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.592
C2 0.000 1.161 -0.195
C3 0.000 -1.161 -0.195
H4 0.000 2.018 0.479
H5 0.000 -2.018 0.479
H6 0.891 1.212 -0.839
H7 -0.891 1.212 -0.839
H8 -0.891 -1.212 -0.839
H9 0.891 -1.212 -0.839

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.40281.40282.02162.02162.07642.07642.07642.0764
C21.40282.32171.09113.25001.10051.10052.61522.6152
C31.40282.32173.25001.09112.61522.61521.10051.1005
H42.02161.09113.25004.03681.78391.78393.60113.6011
H52.02163.25001.09114.03683.60113.60111.78391.7839
H62.07641.10052.61521.78393.60111.78233.00882.4241
H72.07641.10052.61521.78393.60111.78232.42413.0088
H82.07642.61521.10053.60111.78393.00882.42411.7823
H92.07642.61521.10053.60111.78392.42413.00881.7823

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 107.655 O1 C2 H6 111.523
O1 C2 H7 111.523 O1 C3 H5 107.655
O1 C3 H8 111.523 O1 C3 H9 111.523
C2 O1 C3 111.693 H4 C2 H6 108.970
H4 C2 H7 108.970 H5 C3 H8 108.970
H5 C3 H9 108.970 H6 C2 H7 108.145
H8 C3 H9 108.145
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.495      
2 C -0.092      
3 C -0.092      
4 H 0.135      
5 H 0.135      
6 H 0.102      
7 H 0.102      
8 H 0.102      
9 H 0.102      


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 -1.335 1.335
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.121 0.000 0.000
y 0.000 -16.944 0.000
z 0.000 0.000 -21.001
Traceless
 xyz
x -1.148 0.000 0.000
y 0.000 3.616 0.000
z 0.000 0.000 -2.469
Polar
3z2-r2-4.937
x2-y2-3.176
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.737 0.000 0.000
y 0.000 4.595 0.000
z 0.000 0.000 3.643


<r2> (average value of r2) Å2
<r2> 51.999
(<r2>)1/2 7.211