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

using model chemistry: BLYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/6-31G*
 hartrees
Energy at 0K-154.952512
Energy at 298.15K-154.959144
HF Energy-154.952512
Nuclear repulsion energy82.989127
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 BLYP/6-31G*
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 3049 3025 31.05 100.38 0.30 0.46
2 A1 2900 2877 69.88 207.48 0.03 0.06
3 A1 1510 1498 0.11 22.33 0.74 0.85
4 A1 1475 1463 0.01 17.59 0.73 0.84
5 A1 1239 1229 3.37 4.17 0.67 0.80
6 A1 906 899 31.71 8.04 0.42 0.59
7 A1 404 401 2.33 0.69 0.05 0.10
8 A2 2927 2904 0.00 20.59 0.75 0.86
9 A2 1467 1456 0.00 44.04 0.75 0.86
10 A2 1137 1128 0.00 10.27 0.75 0.86
11 A2 227 225 0.00 0.32 0.75 0.86
12 B1 2924 2900 175.51 101.21 0.75 0.86
13 B1 1476 1464 7.51 0.57 0.75 0.86
14 B1 1172 1163 5.30 4.08 0.75 0.86
15 B1 249 247 5.71 0.07 0.75 0.86
16 B2 3048 3023 38.59 77.56 0.75 0.86
17 B2 2883 2860 63.69 4.24 0.75 0.86
18 B2 1488 1476 13.50 4.49 0.75 0.86
19 B2 1443 1431 13.95 11.36 0.75 0.86
20 B2 1156 1146 67.18 0.87 0.75 0.86
21 B2 1088 1079 67.57 4.61 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17084.1 cm-1
Scaled (by 0.9919) Zero Point Vibrational Energy (zpe) 16945.7 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 BLYP/6-31G*
ABC
1.27439 0.32811 0.29023

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.599
C2 0.000 1.182 -0.199
C3 0.000 -1.182 -0.199
H4 0.000 2.037 0.494
H5 0.000 -2.037 0.494
H6 0.899 1.244 -0.849
H7 -0.899 1.244 -0.849
H8 -0.899 -1.244 -0.849
H9 0.899 -1.244 -0.849

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.42611.42612.03952.03952.11032.11032.11032.1103
C21.42612.36351.10083.29231.11131.11132.66752.6675
C31.42612.36353.29231.10082.66752.66751.11131.1113
H42.03951.10083.29234.07361.80021.80023.65743.6574
H52.03953.29231.10084.07363.65743.65741.80021.8002
H62.11031.11132.66751.80023.65741.79883.07032.4882
H72.11031.11132.66751.80023.65741.79882.48823.0703
H82.11032.66751.11133.65741.80023.07032.48821.7988
H92.11032.66751.11133.65741.80022.48823.07031.7988

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 106.925 O1 C2 H6 111.948
O1 C2 H7 111.948 O1 C3 H5 106.925
O1 C3 H8 111.948 O1 C3 H9 111.948
C2 O1 C3 111.922 H4 C2 H6 108.941
H4 C2 H7 108.941 H5 C3 H8 108.941
H5 C3 H9 108.941 H6 C2 H7 108.067
H8 C3 H9 108.067
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.405      
2 C -0.173      
3 C -0.173      
4 H 0.143      
5 H 0.143      
6 H 0.116      
7 H 0.116      
8 H 0.116      
9 H 0.116      


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 -1.195 1.195
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.197 0.000 0.000
y 0.000 -17.218 0.000
z 0.000 0.000 -20.956
Traceless
 xyz
x -1.110 0.000 0.000
y 0.000 3.359 0.000
z 0.000 0.000 -2.249
Polar
3z2-r2-4.498
x2-y2-2.979
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.720 0.000 0.000
y 0.000 4.836 0.000
z 0.000 0.000 3.701


<r2> (average value of r2) Å2
<r2> 53.352
(<r2>)1/2 7.304