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

using model chemistry: TPSSh/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at TPSSh/3-21G*
 hartrees
Energy at 0K-154.181582
Energy at 298.15K-154.188230
HF Energy-154.181582
Nuclear repulsion energy82.022688
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 TPSSh/3-21G*
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 3129 3022 30.80 93.97 0.33 0.50
2 A1 2983 2880 51.74 199.09 0.04 0.07
3 A1 1590 1535 0.25 33.72 0.75 0.86
4 A1 1523 1471 0.57 11.86 0.67 0.80
5 A1 1245 1202 0.00 5.84 0.69 0.82
6 A1 879 849 18.51 11.70 0.33 0.50
7 A1 390 376 3.58 0.65 0.07 0.13
8 A2 3017 2913 0.00 17.13 0.75 0.86
9 A2 1548 1495 0.00 52.29 0.75 0.86
10 A2 1139 1100 0.00 13.71 0.75 0.86
11 A2 246 237 0.00 0.27 0.75 0.86
12 B1 3015 2911 167.27 95.84 0.75 0.86
13 B1 1557 1503 13.18 1.00 0.75 0.86
14 B1 1172 1132 1.83 5.01 0.75 0.86
15 B1 243 235 7.70 0.04 0.75 0.86
16 B2 3126 3019 29.67 75.63 0.75 0.86
17 B2 2971 2869 45.85 2.74 0.75 0.86
18 B2 1571 1518 15.70 4.78 0.75 0.86
19 B2 1478 1427 11.05 11.54 0.75 0.86
20 B2 1140 1101 35.88 1.95 0.75 0.86
21 B2 1070 1033 54.97 4.61 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17515.2 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 16914.4 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 TPSSh/3-21G*
ABC
1.21544 0.32247 0.28235

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.627
C2 0.000 1.197 -0.212
C3 0.000 -1.197 -0.212
H4 0.000 2.046 0.475
H5 0.000 -2.046 0.475
H6 0.894 1.246 -0.855
H7 -0.894 1.246 -0.855
H8 -0.894 -1.246 -0.855
H9 0.894 -1.246 -0.855

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.46161.46162.05142.05142.13302.13302.13302.1330
C21.46162.39301.09283.31441.10231.10232.67942.6794
C31.46162.39303.31441.09282.67942.67941.10231.1023
H42.05141.09283.31444.09151.79151.79153.66153.6615
H52.05143.31441.09284.09153.66153.66151.79151.7915
H62.13301.10232.67941.79153.66151.78773.06712.4923
H72.13301.10232.67941.79153.66151.78772.49233.0671
H82.13302.67941.10233.66151.79153.06712.49231.7877
H92.13302.67941.10233.66151.79152.49233.06711.7877

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 105.945 O1 C2 H6 111.836
O1 C2 H7 111.836 O1 C3 H5 105.945
O1 C3 H8 111.836 O1 C3 H9 111.836
C2 O1 C3 109.893 H4 C2 H6 109.402
H4 C2 H7 109.402 H5 C3 H8 109.402
H5 C3 H9 109.402 H6 C2 H7 108.369
H8 C3 H9 108.369
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.476      
2 C -0.345      
3 C -0.345      
4 H 0.218      
5 H 0.218      
6 H 0.183      
7 H 0.183      
8 H 0.183      
9 H 0.183      


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 -1.560 1.560
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.340 0.000 0.000
y 0.000 4.525 0.000
z 0.000 0.000 3.371


<r2> (average value of r2) Å2
<r2> 54.019
(<r2>)1/2 7.350