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

using model chemistry: QCISD/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-154.767981
Energy at 298.15K-154.774678
HF Energy-154.128683
Nuclear repulsion energy84.093809
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/aug-cc-pVTZ
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 3144 3025 20.66      
2 A1 3005 2892 57.91      
3 A1 1536 1478 2.80      
4 A1 1510 1453 0.03      
5 A1 1290 1241 7.55      
6 A1 969 932 34.00      
7 A1 421 405 2.36      
8 A2 3054 2939 0.00      
9 A2 1509 1453 0.00      
10 A2 1179 1135 0.00      
11 A2 205 197 0.00      
12 B1 3049 2934 110.94      
13 B1 1520 1462 12.30      
14 B1 1211 1165 7.97      
15 B1 255 245 5.17      
16 B2 3142 3024 29.28      
17 B2 2997 2884 49.21      
18 B2 1522 1464 10.12      
19 B2 1477 1422 3.74      
20 B2 1228 1181 112.54      
21 B2 1138 1095 27.82      

Unscaled Zero Point Vibrational Energy (zpe) 17678.6 cm-1
Scaled (by 0.9624) Zero Point Vibrational Energy (zpe) 17013.9 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/aug-cc-pVTZ
ABC
1.29842 0.33837 0.29883

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.590
C2 0.000 1.164 -0.195
C3 0.000 -1.164 -0.195
H4 0.000 2.018 0.480
H5 0.000 -2.018 0.480
H6 0.890 1.216 -0.836
H7 -0.890 1.216 -0.836
H8 -0.890 -1.216 -0.836
H9 0.890 -1.216 -0.836

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.40391.40392.02092.02092.07432.07432.07432.0743
C21.40392.32741.08843.25221.09741.09742.61982.6198
C31.40392.32743.25221.08842.61982.61981.09741.0974
H42.02091.08843.25224.03571.77881.77883.60243.6024
H52.02093.25221.08844.03573.60243.60241.77881.7788
H62.07431.09742.61981.77883.60241.77913.01292.4315
H72.07431.09742.61981.77883.60241.77912.43153.0129
H82.07432.61981.09743.60241.77883.01292.43151.7791
H92.07432.61981.09743.60241.77882.43153.01291.7791

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 107.684 O1 C2 H6 111.461
O1 C2 H7 111.461 O1 C3 H5 107.684
O1 C3 H8 111.461 O1 C3 H9 111.461
C2 O1 C3 111.971 H4 C2 H6 108.937
H4 C2 H7 108.937 H5 C3 H8 108.937
H5 C3 H9 108.937 H6 C2 H7 108.305
H8 C3 H9 108.305
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability