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

using model chemistry: QCISD/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/6-311G*
 hartrees
Energy at 0K-154.605215
Energy at 298.15K-154.611943
HF Energy-154.098169
Nuclear repulsion energy83.993655
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 QCISD/6-311G*
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 3138 3004 31.15      
2 A1 2993 2866 59.01      
3 A1 1554 1487 1.78      
4 A1 1524 1459 0.21      
5 A1 1297 1242 6.25      
6 A1 981 939 36.14      
7 A1 434 416 2.25      
8 A2 3039 2910 0.00      
9 A2 1511 1447 0.00      
10 A2 1183 1133 0.00      
11 A2 207 199 0.00      
12 B1 3036 2906 153.38      
13 B1 1524 1459 13.81      
14 B1 1221 1169 8.45      
15 B1 270 258 7.27      
16 B2 3136 3003 34.51      
17 B2 2981 2854 50.96      
18 B2 1533 1468 16.09      
19 B2 1495 1431 3.50      
20 B2 1239 1186 107.35      
21 B2 1148 1099 24.44      

Unscaled Zero Point Vibrational Energy (zpe) 17721.2 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 16966.2 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 QCISD/6-311G*
ABC
1.29025 0.33851 0.29881

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.597
C2 0.000 1.163 -0.198
C3 0.000 -1.163 -0.198
H4 0.000 2.019 0.480
H5 0.000 -2.019 0.480
H6 0.894 1.212 -0.840
H7 -0.894 1.212 -0.840
H8 -0.894 -1.212 -0.840
H9 0.894 -1.212 -0.840

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.40871.40872.02262.02262.08242.08242.08242.0824
C21.40872.32501.09293.25331.10211.10212.61742.6174
C31.40872.32503.25331.09292.61742.61741.10211.1021
H42.02261.09293.25334.03851.78781.78783.60353.6035
H52.02263.25331.09294.03853.60353.60351.78781.7878
H62.08241.10212.61741.78783.60351.78853.01242.4240
H72.08241.10212.61741.78783.60351.78852.42403.0124
H82.08242.61741.10213.60351.78783.01242.42401.7885
H92.08242.61741.10213.60351.78782.42403.01241.7885

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 107.232 O1 C2 H6 111.481
O1 C2 H7 111.481 O1 C3 H5 107.232
O1 C3 H8 111.481 O1 C3 H9 111.481
C2 O1 C3 111.225 H4 C2 H6 109.065
H4 C2 H7 109.065 H5 C3 H8 109.065
H5 C3 H9 109.065 H6 C2 H7 108.464
H8 C3 H9 108.464
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability