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

using model chemistry: MP2=FULL/aug-cc-pVQZ

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/aug-cc-pVQZ
 hartrees
Energy at 0K-154.871779
Energy at 298.15K-154.878493
HF Energy-154.138747
Nuclear repulsion energy84.455363
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/aug-cc-pVQZ
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 3196 3057 15.76 84.52 0.34 0.51
2 A1 3038 2906 54.89 322.42 0.01 0.02
3 A1 1537 1470 3.77 5.59 0.74 0.85
4 A1 1502 1437 0.01 1.66 0.74 0.85
5 A1 1280 1224 6.13 0.43 0.62 0.77
6 A1 967 925 36.32 8.81 0.23 0.38
7 A1 418 400 2.49 0.85 0.13 0.24
8 A2 3106 2971 0.00 14.02 0.75 0.86
9 A2 1511 1446 0.00 10.42 0.75 0.86
10 A2 1180 1128 0.00 1.33 0.75 0.86
11 A2 214 205 0.00 0.14 0.75 0.86
12 B1 3098 2963 95.50 89.50 0.75 0.86
13 B1 1522 1455 15.39 0.04 0.75 0.86
14 B1 1208 1156 6.69 0.02 0.75 0.86
15 B1 263 252 5.09 0.00 0.75 0.86
16 B2 3196 3056 20.63 56.59 0.75 0.86
17 B2 3033 2901 51.37 0.67 0.75 0.86
18 B2 1523 1456 11.34 0.98 0.75 0.86
19 B2 1472 1408 1.79 1.16 0.75 0.86
20 B2 1222 1169 109.14 0.73 0.75 0.86
21 B2 1139 1089 27.90 1.27 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17812.6 cm-1
Scaled (by 0.9564) Zero Point Vibrational Energy (zpe) 17036.0 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/aug-cc-pVQZ
ABC
1.30168 0.34231 0.30172

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/aug-cc-pVQZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.598
C2 0.000 1.157 -0.198
C3 0.000 -1.157 -0.198
H4 0.000 2.012 0.467
H5 0.000 -2.012 0.467
H6 0.886 1.197 -0.835
H7 -0.886 1.197 -0.835
H8 -0.886 -1.197 -0.835
H9 0.886 -1.197 -0.835

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.40481.40482.01582.01582.06662.06662.06662.0666
C21.40482.31471.08273.23801.09151.09152.59512.5951
C31.40482.31473.23801.08272.59512.59511.09151.0915
H42.01581.08273.23804.02311.77251.77253.57443.5744
H52.01583.23801.08274.02313.57443.57441.77251.7725
H62.06661.09152.59511.77253.57441.77172.97892.3948
H72.06661.09152.59511.77253.57441.77172.39482.9789
H82.06662.59511.09153.57441.77252.97892.39481.7717
H92.06662.59511.09153.57441.77252.39482.97891.7717

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 107.563 O1 C2 H6 111.144
O1 C2 H7 111.144 O1 C3 H5 107.563
O1 C3 H8 111.144 O1 C3 H9 111.144
C2 O1 C3 110.945 H4 C2 H6 109.225
H4 C2 H7 109.225 H5 C3 H8 109.225
H5 C3 H9 109.225 H6 C2 H7 108.507
H8 C3 H9 108.507
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability