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

using model chemistry: B3LYP/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/SDD
 hartrees
Energy at 0K-155.005651
Energy at 298.15K-155.012205
HF Energy-155.005651
Nuclear repulsion energy82.085096
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 B3LYP/SDD
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 3165 3042 38.66 79.94 0.34 0.51
2 A1 2996 2880 76.59 252.82 0.02 0.05
3 A1 1526 1467 4.00 21.75 0.75 0.86
4 A1 1493 1435 0.06 9.87 0.73 0.85
5 A1 1243 1195 0.31 7.21 0.59 0.75
6 A1 873 840 26.86 16.73 0.29 0.45
7 A1 388 373 5.03 0.38 0.13 0.23
8 A2 3061 2942 0.00 16.54 0.75 0.86
9 A2 1497 1439 0.00 36.11 0.75 0.86
10 A2 1134 1090 0.00 14.42 0.75 0.86
11 A2 203 196 0.00 0.37 0.75 0.86
12 B1 3060 2942 182.50 87.97 0.75 0.86
13 B1 1507 1449 23.65 0.63 0.75 0.86
14 B1 1162 1117 1.44 4.10 0.75 0.86
15 B1 228 220 9.72 0.01 0.75 0.86
16 B2 3161 3039 34.99 69.91 0.75 0.86
17 B2 2985 2870 71.88 1.05 0.75 0.86
18 B2 1509 1451 18.11 3.57 0.75 0.86
19 B2 1469 1412 0.39 7.36 0.75 0.86
20 B2 1163 1118 53.24 0.14 0.75 0.86
21 B2 1086 1044 48.39 9.66 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17455.7 cm-1
Scaled (by 0.9613) Zero Point Vibrational Energy (zpe) 16780.2 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 B3LYP/SDD
ABC
1.28170 0.31482 0.27996

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/SDD

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.596
C2 0.000 1.213 -0.202
C3 0.000 -1.213 -0.202
H4 0.000 2.047 0.505
H5 0.000 -2.047 0.505
H6 0.897 1.276 -0.841
H7 -0.897 1.276 -0.841
H8 -0.897 -1.276 -0.841
H9 0.897 -1.276 -0.841

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.45171.45172.04922.04922.12082.12082.12082.1208
C21.45172.42541.09333.33551.10311.10312.72142.7214
C31.45172.42543.33551.09332.72142.72141.10311.1031
H42.04921.09333.33554.09431.79161.79163.69563.6956
H52.04923.33551.09334.09433.69563.69561.79161.7916
H62.12081.10312.72141.79163.69561.79383.11922.5518
H72.12081.10312.72141.79163.69561.79382.55183.1192
H82.12082.72141.10313.69561.79163.11922.55181.7938
H92.12082.72141.10313.69561.79162.55183.11921.7938

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 106.403 O1 C2 H6 111.490
O1 C2 H7 111.490 O1 C3 H5 106.403
O1 C3 H8 111.490 O1 C3 H9 111.490
C2 O1 C3 113.307 H4 C2 H6 109.307
H4 C2 H7 109.307 H5 C3 H8 109.307
H5 C3 H9 109.307 H6 C2 H7 108.789
H8 C3 H9 108.789
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.319      
2 C -0.434      
3 C -0.434      
4 H 0.223      
5 H 0.223      
6 H 0.185      
7 H 0.185      
8 H 0.185      
9 H 0.185      


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 -1.932 1.932
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.866 0.000 0.000
y 0.000 -16.199 0.000
z 0.000 0.000 -21.259
Traceless
 xyz
x -1.137 0.000 0.000
y 0.000 4.363 0.000
z 0.000 0.000 -3.226
Polar
3z2-r2-6.452
x2-y2-3.667
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.350 0.000 0.000
y 0.000 4.377 0.000
z 0.000 0.000 3.404


<r2> (average value of r2) Å2
<r2> 54.363
(<r2>)1/2 7.373