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

using model chemistry: TPSSh/STO-3G

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/STO-3G
 hartrees
Energy at 0K-153.077402
Energy at 298.15K-153.083964
HF Energy-153.077402
Nuclear repulsion energy81.604221
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/STO-3G
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 3440 3440 5.06 37.10 0.57 0.73
2 A1 3226 3226 10.14 84.92 0.01 0.02
3 A1 1686 1686 0.41 27.06 0.75 0.86
4 A1 1610 1610 0.17 6.03 0.73 0.84
5 A1 1328 1328 0.00 3.87 0.64 0.78
6 A1 972 972 3.02 7.97 0.31 0.47
7 A1 447 447 0.87 0.67 0.14 0.24
8 A2 3365 3365 0.00 8.43 0.75 0.86
9 A2 1657 1657 0.00 32.54 0.75 0.86
10 A2 1169 1169 0.00 5.85 0.75 0.86
11 A2 236 236 0.00 0.04 0.75 0.86
12 B1 3360 3360 33.61 43.73 0.75 0.86
13 B1 1656 1656 5.67 2.54 0.75 0.86
14 B1 1185 1185 3.74 3.06 0.75 0.86
15 B1 263 263 2.97 0.01 0.75 0.86
16 B2 3437 3437 0.10 33.21 0.75 0.86
17 B2 3225 3225 20.32 0.00 0.75 0.86
18 B2 1680 1680 7.49 0.37 0.75 0.86
19 B2 1568 1568 20.77 7.18 0.75 0.86
20 B2 1207 1207 21.70 1.04 0.75 0.86
21 B2 1155 1155 0.27 3.42 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18935.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18935.2 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/STO-3G
ABC
1.14095 0.32913 0.28355

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.661
C2 0.000 1.179 -0.222
C3 0.000 -1.179 -0.222
H4 0.000 2.067 0.439
H5 0.000 -2.067 0.439
H6 0.901 1.219 -0.875
H7 -0.901 1.219 -0.875
H8 -0.901 -1.219 -0.875
H9 0.901 -1.219 -0.875

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.47291.47292.07922.07922.15802.15802.15802.1580
C21.47292.35761.10723.31261.11351.11352.64302.6430
C31.47292.35763.31261.10722.64302.64301.11351.1135
H42.07921.10723.31264.13451.80511.80513.65163.6516
H52.07923.31261.10724.13453.65163.65161.80511.8051
H62.15801.11352.64301.80513.65161.80173.03072.4370
H72.15801.11352.64301.80513.65161.80172.43703.0307
H82.15802.64301.11353.65161.80513.03072.43701.8017
H92.15802.64301.11353.65161.80512.43703.03071.8017

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 106.527 O1 C2 H6 112.355
O1 C2 H7 112.355 O1 C3 H5 106.527
O1 C3 H8 112.355 O1 C3 H9 112.355
C2 O1 C3 106.320 H4 C2 H6 108.751
H4 C2 H7 108.751 H5 C3 H8 108.751
H5 C3 H9 108.751 H6 C2 H7 107.998
H8 C3 H9 107.998
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.179      
2 C -0.113      
3 C -0.113      
4 H 0.076      
5 H 0.076      
6 H 0.063      
7 H 0.063      
8 H 0.063      
9 H 0.063      


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 -1.156 1.156
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 1.690 0.000 0.000
y 0.000 2.835 0.000
z 0.000 0.000 1.849


<r2> (average value of r2) Å2
<r2> 53.303
(<r2>)1/2 7.301