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

using model chemistry: B3PW91/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-154.980853
Energy at 298.15K-154.987534
HF Energy-154.980853
Nuclear repulsion energy84.174357
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(2df,p)
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 3125 3005 24.97 91.31 0.35 0.51
2 A1 2976 2861 53.46 206.78 0.03 0.05
3 A1 1517 1458 1.44 14.98 0.74 0.85
4 A1 1488 1430 0.04 12.86 0.74 0.85
5 A1 1271 1222 5.69 1.67 0.57 0.72
6 A1 972 934 31.84 7.66 0.38 0.55
7 A1 412 396 2.30 0.47 0.03 0.06
8 A2 3022 2905 0.00 15.57 0.75 0.86
9 A2 1475 1418 0.00 32.10 0.75 0.86
10 A2 1165 1120 0.00 4.87 0.75 0.86
11 A2 219 211 0.00 0.21 0.75 0.86
12 B1 3016 2900 135.01 93.68 0.75 0.86
13 B1 1485 1427 11.44 0.24 0.75 0.86
14 B1 1199 1153 6.39 2.12 0.75 0.86
15 B1 248 239 5.05 0.06 0.75 0.86
16 B2 3123 3003 30.69 70.12 0.75 0.86
17 B2 2963 2849 57.76 1.51 0.75 0.86
18 B2 1493 1436 13.23 2.93 0.75 0.86
19 B2 1456 1399 4.84 6.36 0.75 0.86
20 B2 1220 1173 119.81 0.14 0.75 0.86
21 B2 1135 1091 19.56 3.28 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17489.9 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 16814.8 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(2df,p)
ABC
1.31343 0.33794 0.29937

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.588
C2 0.000 1.163 -0.193
C3 0.000 -1.163 -0.193
H4 0.000 2.018 0.487
H5 0.000 -2.018 0.487
H6 0.891 1.223 -0.839
H7 -0.891 1.223 -0.839
H8 -0.891 -1.223 -0.839
H9 0.891 -1.223 -0.839

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.40091.40092.02092.02092.08092.08092.08092.0809
C21.40092.32501.09323.25281.10261.10262.62772.6277
C31.40092.32503.25281.09322.62772.62771.10261.1026
H42.02091.09323.25284.03681.78471.78473.61433.6143
H52.02093.25281.09324.03683.61433.61431.78471.7847
H62.08091.10262.62771.78473.61431.78293.02762.4470
H72.08091.10262.62771.78473.61431.78292.44703.0276
H82.08092.62771.10263.61431.78473.02762.44701.7829
H92.08092.62771.10263.61431.78472.44703.02761.7829

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 107.604 O1 C2 H6 111.890
O1 C2 H7 111.890 O1 C3 H5 107.604
O1 C3 H8 111.890 O1 C3 H9 111.890
C2 O1 C3 112.158 H4 C2 H6 108.735
H4 C2 H7 108.735 H5 C3 H8 108.735
H5 C3 H9 108.735 H6 C2 H7 107.906
H8 C3 H9 107.906
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.237      
2 C -0.273      
3 C -0.273      
4 H 0.149      
5 H 0.149      
6 H 0.121      
7 H 0.121      
8 H 0.121      
9 H 0.121      


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 -1.157 1.157
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.829 0.000 0.000
y 0.000 -17.128 0.000
z 0.000 0.000 -20.627
Traceless
 xyz
x -0.951 0.000 0.000
y 0.000 3.100 0.000
z 0.000 0.000 -2.148
Polar
3z2-r2-4.297
x2-y2-2.701
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.858 0.000 0.000
y 0.000 4.864 0.000
z 0.000 0.000 3.790


<r2> (average value of r2) Å2
<r2> 52.030
(<r2>)1/2 7.213