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

using model chemistry: B1B95/CEP-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 B1B95/CEP-31G
 hartrees
Energy at 0K-30.766001
Energy at 298.15K-30.772575
Nuclear repulsion energy49.340287
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 B1B95/CEP-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 3185 3049 51.07      
2 A1 3014 2886 91.60      
3 A1 1518 1453 4.16      
4 A1 1481 1418 0.01      
5 A1 1239 1186 0.01      
6 A1 911 872 28.08      
7 A1 379 362 4.18      
8 A2 3085 2954 0.00      
9 A2 1484 1421 0.00      
10 A2 1140 1092 0.00      
11 A2 211 202 0.00      
12 B1 3081 2950 212.83      
13 B1 1493 1430 21.72      
14 B1 1166 1117 2.17      
15 B1 229 220 10.16      
16 B2 3180 3045 38.36      
17 B2 3005 2877 81.28      
18 B2 1497 1433 16.97      
19 B2 1463 1401 0.01      
20 B2 1191 1140 81.67      
21 B2 1106 1059 17.60      

Unscaled Zero Point Vibrational Energy (zpe) 17528.4 cm-1
Scaled (by 0.9575) Zero Point Vibrational Energy (zpe) 16783.4 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 B1B95/CEP-31G
ABC
1.27472 0.31905 0.28319

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/CEP-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.599
C2 0.000 1.202 -0.201
C3 0.000 -1.202 -0.201
H4 0.000 2.049 0.498
H5 0.000 -2.049 0.498
H6 0.900 1.261 -0.844
H7 -0.900 1.261 -0.844
H8 -0.900 -1.261 -0.844
H9 0.900 -1.261 -0.844

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.44411.44412.05142.05142.11722.11722.11722.1172
C21.44412.40491.09753.32561.10821.10822.70022.7002
C31.44412.40493.32561.09752.70022.70021.10821.1082
H42.05141.09753.32564.09781.79821.79823.68313.6831
H52.05143.32561.09754.09783.68313.68311.79821.7982
H62.11721.10822.70021.79823.68311.80043.09802.5212
H72.11721.10822.70021.79823.68311.80042.52123.0980
H82.11722.70021.10823.68311.79823.09802.52121.8004
H92.11722.70021.10823.68311.79822.52123.09801.8004

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 106.839 O1 C2 H6 111.428
O1 C2 H7 111.428 O1 C3 H5 106.839
O1 C3 H8 111.428 O1 C3 H9 111.428
C2 O1 C3 112.750 H4 C2 H6 109.225
H4 C2 H7 109.225 H5 C3 H8 109.225
H5 C3 H9 109.225 H6 C2 H7 108.647
H8 C3 H9 108.647
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.249      
2 C -0.375      
3 C -0.375      
4 H 0.210      
5 H 0.210      
6 H 0.145      
7 H 0.145      
8 H 0.145      
9 H 0.145      


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 -2.019 2.019
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.696 0.000 0.000
y 0.000 -16.174 0.000
z 0.000 0.000 -21.271
Traceless
 xyz
x -0.974 0.000 0.000
y 0.000 4.310 0.000
z 0.000 0.000 -3.336
Polar
3z2-r2-6.672
x2-y2-3.522
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.228 0.000 0.000
y 0.000 4.119 0.000
z 0.000 0.000 3.203


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000