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

using model chemistry: MP2=FULL/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-154.784647
Energy at 298.15K-154.791359
HF Energy-154.125106
Nuclear repulsion energy84.405097
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 MP2=FULL/6-311+G(3df,2p)
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 3197 3014 16.45 84.83 0.34 0.51
2 A1 3041 2867 55.45 277.54 0.01 0.03
3 A1 1541 1453 3.86 6.57 0.75 0.86
4 A1 1507 1421 0.00 1.85 0.75 0.86
5 A1 1285 1211 6.04 0.56 0.45 0.62
6 A1 971 915 36.13 8.75 0.21 0.35
7 A1 419 395 2.54 0.75 0.13 0.22
8 A2 3106 2928 0.00 14.37 0.75 0.86
9 A2 1512 1426 0.00 11.43 0.75 0.86
10 A2 1184 1116 0.00 1.52 0.75 0.86
11 A2 211 199 0.00 0.16 0.75 0.86
12 B1 3098 2921 98.96 92.28 0.75 0.86
13 B1 1523 1436 15.34 0.02 0.75 0.86
14 B1 1214 1145 7.04 0.10 0.75 0.86
15 B1 262 247 5.34 0.00 0.75 0.86
16 B2 3196 3013 22.13 57.72 0.75 0.86
17 B2 3035 2861 53.16 0.69 0.75 0.86
18 B2 1526 1439 11.91 1.03 0.75 0.86
19 B2 1479 1394 2.00 1.26 0.75 0.86
20 B2 1231 1160 109.63 0.75 0.75 0.86
21 B2 1144 1079 27.75 1.43 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17840.6 cm-1
Scaled (by 0.9427) Zero Point Vibrational Energy (zpe) 16818.4 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 MP2=FULL/6-311+G(3df,2p)
ABC
1.30592 0.34121 0.30120

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.595
C2 0.000 1.159 -0.197
C3 0.000 -1.159 -0.197
H4 0.000 2.013 0.471
H5 0.000 -2.013 0.471
H6 0.887 1.203 -0.835
H7 -0.887 1.203 -0.835
H8 -0.887 -1.203 -0.835
H9 0.887 -1.203 -0.835

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.40401.40402.01652.01652.06842.06842.06842.0684
C21.40402.31791.08453.24141.09321.09322.60212.6021
C31.40402.31793.24141.08452.60212.60211.09321.0932
H42.01651.08453.24144.02541.77441.77443.58223.5822
H52.01653.24141.08454.02543.58223.58221.77441.7744
H62.06841.09322.60211.77443.58221.77442.98922.4057
H72.06841.09322.60211.77443.58221.77442.40572.9892
H82.06842.60211.09323.58221.77442.98922.40571.7744
H92.06842.60211.09323.58221.77442.40572.98921.7744

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 107.564 O1 C2 H6 111.237
O1 C2 H7 111.237 O1 C3 H5 107.564
O1 C3 H8 111.237 O1 C3 H9 111.237
C2 O1 C3 111.265 H4 C2 H6 109.138
H4 C2 H7 109.138 H5 C3 H8 109.138
H5 C3 H9 109.138 H6 C2 H7 108.489
H8 C3 H9 108.489
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability