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

using model chemistry: B3PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-154.973359
Energy at 298.15K-154.980045
Nuclear repulsion energy84.046889
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 B3PW91/6-31G**
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 3141 3011 28.32      
2 A1 2987 2863 59.51      
3 A1 1531 1467 0.82      
4 A1 1499 1437 0.05      
5 A1 1271 1218 4.66      
6 A1 974 934 35.38      
7 A1 413 396 2.64      
8 A2 3033 2907 0.00      
9 A2 1488 1426 0.00      
10 A2 1167 1118 0.00      
11 A2 223 213 0.00      
12 B1 3028 2902 151.57      
13 B1 1498 1436 11.58      
14 B1 1202 1152 5.58      
15 B1 250 239 6.33      
16 B2 3140 3009 32.77      
17 B2 2973 2849 61.07      
18 B2 1506 1443 14.80      
19 B2 1467 1406 7.14      
20 B2 1226 1175 124.39      
21 B2 1137 1090 18.73      

Unscaled Zero Point Vibrational Energy (zpe) 17576.8 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 16845.6 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 B3PW91/6-31G**
ABC
1.30876 0.33682 0.29826

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.590
C2 0.000 1.165 -0.195
C3 0.000 -1.165 -0.195
H4 0.000 2.019 0.487
H5 0.000 -2.019 0.487
H6 0.892 1.227 -0.840
H7 -0.892 1.227 -0.840
H8 -0.892 -1.227 -0.840
H9 0.892 -1.227 -0.840

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.40431.40432.02182.02182.08462.08462.08462.0846
C21.40432.32941.09283.25591.10251.10252.63292.6329
C31.40432.32943.25591.09282.63292.63291.10251.1025
H42.02181.09283.25594.03831.78391.78393.61843.6184
H52.02183.25591.09284.03833.61843.61841.78391.7839
H62.08461.10252.63291.78393.61841.78323.03372.4542
H72.08461.10252.63291.78393.61841.78322.45423.0337
H82.08462.63291.10253.61841.78393.03372.45421.7832
H92.08462.63291.10253.61841.78392.45423.03371.7832

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 107.473 O1 C2 H6 111.963
O1 C2 H7 111.963 O1 C3 H5 107.473
O1 C3 H8 111.963 O1 C3 H9 111.963
C2 O1 C3 112.073 H4 C2 H6 108.703
H4 C2 H7 108.703 H5 C3 H8 108.703
H5 C3 H9 108.703 H6 C2 H7 107.949
H8 C3 H9 107.949
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.465      
2 C -0.124      
3 C -0.124      
4 H 0.139      
5 H 0.139      
6 H 0.109      
7 H 0.109      
8 H 0.109      
9 H 0.109      


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 -1.286 1.286
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.982 0.000 0.000
y 0.000 -16.867 0.000
z 0.000 0.000 -20.806
Traceless
 xyz
x -1.145 0.000 0.000
y 0.000 3.527 0.000
z 0.000 0.000 -2.382
Polar
3z2-r2-4.765
x2-y2-3.115
xy0.000
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 52.173
(<r2>)1/2 7.223