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

using model chemistry: PBEPBE/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 PBEPBE/6-31G**
 hartrees
Energy at 0K-154.828791
Energy at 298.15K-154.835445
HF Energy-154.828791
Nuclear repulsion energy83.446690
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 PBEPBE/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 3066 3024 25.99 98.51 0.33 0.49
2 A1 2906 2867 61.44 221.73 0.03 0.05
3 A1 1486 1466 0.65 20.93 0.74 0.85
4 A1 1451 1431 0.00 17.25 0.74 0.85
5 A1 1229 1212 3.38 2.99 0.65 0.79
6 A1 938 925 32.48 7.33 0.44 0.61
7 A1 405 400 2.35 0.59 0.04 0.08
8 A2 2947 2907 0.00 20.64 0.75 0.86
9 A2 1440 1420 0.00 42.96 0.75 0.86
10 A2 1128 1113 0.00 8.11 0.75 0.86
11 A2 229 226 0.00 0.34 0.75 0.86
12 B1 2941 2900 153.90 100.39 0.75 0.86
13 B1 1449 1429 10.91 0.42 0.75 0.86
14 B1 1163 1147 4.32 3.51 0.75 0.86
15 B1 254 250 5.63 0.07 0.75 0.86
16 B2 3065 3023 30.43 75.87 0.75 0.86
17 B2 2891 2851 65.18 3.36 0.75 0.86
18 B2 1460 1440 15.15 4.30 0.75 0.86
19 B2 1420 1400 7.31 10.82 0.75 0.86
20 B2 1169 1153 108.04 0.01 0.75 0.86
21 B2 1101 1086 22.51 4.50 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17068.8 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 16835.0 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 PBEPBE/6-31G**
ABC
1.27512 0.33406 0.29482

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.600
C2 0.000 1.169 -0.198
C3 0.000 -1.169 -0.198
H4 0.000 2.032 0.486
H5 0.000 -2.032 0.486
H6 0.898 1.229 -0.850
H7 -0.898 1.229 -0.850
H8 -0.898 -1.229 -0.850
H9 0.898 -1.229 -0.850

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.41571.41572.03492.03492.10262.10262.10262.1026
C21.41572.33801.10073.27291.11131.11132.64272.6427
C31.41572.33803.27291.10072.64272.64271.11131.1113
H42.03491.10073.27294.06331.79821.79823.63653.6365
H52.03493.27291.10074.06333.63653.63651.79821.7982
H62.10261.11132.64271.79823.63651.79633.04502.4588
H72.10261.11132.64271.79823.63651.79632.45883.0450
H82.10262.64271.11133.63651.79823.04502.45881.7963
H92.10262.64271.11133.63651.79822.45883.04501.7963

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 107.268 O1 C2 H6 112.063
O1 C2 H7 112.063 O1 C3 H5 107.268
O1 C3 H8 112.063 O1 C3 H9 112.063
C2 O1 C3 111.332 H4 C2 H6 108.764
H4 C2 H7 108.764 H5 C3 H8 108.764
H5 C3 H9 108.764 H6 C2 H7 107.834
H8 C3 H9 107.834
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.420      
2 C -0.125      
3 C -0.125      
4 H 0.130      
5 H 0.130      
6 H 0.102      
7 H 0.102      
8 H 0.102      
9 H 0.102      


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 -1.190 1.190
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.149 0.000 0.000
y 0.000 -17.111 0.000
z 0.000 0.000 -20.895
Traceless
 xyz
x -1.146 0.000 0.000
y 0.000 3.412 0.000
z 0.000 0.000 -2.265
Polar
3z2-r2-4.531
x2-y2-3.038
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.805 0.000 0.000
y 0.000 4.894 0.000
z 0.000 0.000 3.767


<r2> (average value of r2) Å2
<r2> 52.749
(<r2>)1/2 7.263