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

using model chemistry: HF/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 HF/6-31G*
 hartrees
Energy at 0K-154.064745
Energy at 298.15K-154.071541
HF Energy-154.064745
Nuclear repulsion energy84.761272
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 HF/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 3305 2970 45.18 96.08 0.35 0.52
2 A1 3180 2857 63.45 203.49 0.05 0.09
3 A1 1671 1501 0.01 15.87 0.75 0.86
4 A1 1650 1483 0.32 17.76 0.74 0.85
5 A1 1402 1260 12.41 3.82 0.45 0.62
6 A1 1045 939 41.36 12.85 0.39 0.57
7 A1 444 399 3.22 0.47 0.02 0.04
8 A2 3216 2890 0.00 10.40 0.75 0.86
9 A2 1640 1473 0.00 38.32 0.75 0.86
10 A2 1281 1151 0.00 7.30 0.75 0.86
11 A2 214 193 0.00 0.10 0.75 0.86
12 B1 3219 2892 181.22 98.46 0.75 0.86
13 B1 1651 1483 6.84 0.46 0.75 0.86
14 B1 1316 1183 13.54 3.22 0.75 0.86
15 B1 266 239 8.77 0.09 0.75 0.86
16 B2 3303 2967 53.19 79.45 0.75 0.86
17 B2 3164 2843 52.36 0.30 0.75 0.86
18 B2 1652 1484 9.67 2.48 0.75 0.86
19 B2 1612 1449 18.01 7.63 0.75 0.86
20 B2 1349 1212 161.53 0.41 0.75 0.86
21 B2 1234 1109 37.13 5.76 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18906.3 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 16987.3 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 HF/6-31G*
ABC
1.36850 0.33757 0.30121

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.571
C2 0.000 1.166 -0.189
C3 0.000 -1.166 -0.189
H4 0.000 2.003 0.495
H5 0.000 -2.003 0.495
H6 0.883 1.229 -0.823
H7 -0.883 1.229 -0.823
H8 -0.883 -1.229 -0.823
H9 0.883 -1.229 -0.823

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.39131.39132.00462.00462.05702.05702.05702.0570
C21.39132.33161.08143.24201.08891.08892.62982.6298
C31.39132.33163.24201.08142.62982.62981.08891.0889
H42.00461.08143.24204.00631.76541.76543.60043.6004
H52.00463.24201.08144.00633.60043.60041.76541.7654
H62.05701.08892.62981.76543.60041.76643.02672.4578
H72.05701.08892.62981.76543.60041.76642.45783.0267
H82.05702.62981.08893.60041.76543.02672.45781.7664
H92.05702.62981.08893.60041.76542.45783.02671.7664

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 107.663 O1 C2 H6 111.485
O1 C2 H7 111.485 O1 C3 H5 107.663
O1 C3 H8 111.485 O1 C3 H9 111.485
C2 O1 C3 113.834 H4 C2 H6 108.869
H4 C2 H7 108.869 H5 C3 H8 108.869
H5 C3 H9 108.869 H6 C2 H7 108.408
H8 C3 H9 108.408
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.590      
2 C -0.161      
3 C -0.161      
4 H 0.177      
5 H 0.177      
6 H 0.140      
7 H 0.140      
8 H 0.140      
9 H 0.140      


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 -1.477 1.477
CHELPG 0.000 0.000 -1.501 1.501
AIM        
ESP 0.019 0.000 -1.517 1.517


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.166 0.000 0.000
y 0.000 -16.875 0.000
z 0.000 0.000 -21.117
Traceless
 xyz
x -1.170 0.000 0.000
y 0.000 3.767 0.000
z 0.000 0.000 -2.597
Polar
3z2-r2-5.194
x2-y2-3.291
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.469 0.000 0.000
y 0.000 4.142 0.000
z 0.000 0.000 3.377


<r2> (average value of r2) Å2
<r2> 51.833
(<r2>)1/2 7.200