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

using model chemistry: B1B95/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-31+G**
 hartrees
Energy at 0K-154.955302
Energy at 298.15K-154.961962
HF Energy-154.955302
Nuclear repulsion energy84.217601
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 B1B95/6-31+G**
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 3028 21.37 104.36 0.35 0.52
2 A1 3010 2879 70.02 254.22 0.02 0.05
3 A1 1521 1455 2.84 11.44 0.72 0.84
4 A1 1491 1426 0.39 7.67 0.73 0.84
5 A1 1269 1214 6.30 1.45 0.63 0.77
6 A1 976 934 41.43 8.15 0.35 0.52
7 A1 404 386 2.47 0.76 0.09 0.16
8 A2 3063 2930 0.00 19.73 0.75 0.86
9 A2 1487 1423 0.00 24.72 0.75 0.86
10 A2 1167 1116 0.00 4.22 0.75 0.86
11 A2 213 204 0.00 0.35 0.75 0.86
12 B1 3056 2923 137.59 119.40 0.75 0.86
13 B1 1496 1431 16.54 0.02 0.75 0.86
14 B1 1196 1144 7.87 0.49 0.75 0.86
15 B1 244 234 7.03 0.06 0.75 0.86
16 B2 3165 3027 30.41 74.49 0.75 0.86
17 B2 2999 2869 65.34 1.85 0.75 0.86
18 B2 1501 1436 15.75 1.67 0.75 0.86
19 B2 1463 1400 2.30 6.75 0.75 0.86
20 B2 1234 1180 132.69 0.53 0.75 0.86
21 B2 1136 1086 16.93 3.47 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17627.2 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 16862.2 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 B1B95/6-31+G**
ABC
1.31819 0.33752 0.29929

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.587
C2 0.000 1.165 -0.194
C3 0.000 -1.165 -0.194
H4 0.000 2.015 0.487
H5 0.000 -2.015 0.487
H6 0.892 1.220 -0.834
H7 -0.892 1.220 -0.834
H8 -0.892 -1.220 -0.834
H9 0.892 -1.220 -0.834

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.40261.40262.01772.01772.07432.07432.07432.0743
C21.40262.32961.08963.25211.09891.09892.62482.6248
C31.40262.32963.25211.08962.62482.62481.09891.0989
H42.01771.08963.25214.03041.78151.78153.60613.6061
H52.01773.25211.08964.03043.60613.60611.78151.7815
H62.07431.09892.62481.78153.60611.78313.02132.4390
H72.07431.09892.62481.78153.60611.78312.43903.0213
H82.07432.62481.09893.60611.78153.02132.43901.7831
H92.07432.62481.09893.60611.78152.43903.02131.7831

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 107.449 O1 C2 H6 111.461
O1 C2 H7 111.461 O1 C3 H5 107.449
O1 C3 H8 111.461 O1 C3 H9 111.461
C2 O1 C3 112.288 H4 C2 H6 108.981
H4 C2 H7 108.981 H5 C3 H8 108.981
H5 C3 H9 108.981 H6 C2 H7 108.451
H8 C3 H9 108.451
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.336      
2 C -0.257      
3 C -0.257      
4 H 0.158      
5 H 0.158      
6 H 0.133      
7 H 0.133      
8 H 0.133      
9 H 0.133      


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 -1.437 1.437
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.310 0.000 0.000
y 0.000 -17.177 0.000
z 0.000 0.000 -21.500
Traceless
 xyz
x -0.971 0.000 0.000
y 0.000 3.728 0.000
z 0.000 0.000 -2.756
Polar
3z2-r2-5.513
x2-y2-3.133
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.117 0.000 0.000
y 0.000 4.985 0.000
z 0.000 0.000 4.128


<r2> (average value of r2) Å2
<r2> 52.281
(<r2>)1/2 7.231