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

using model chemistry: BLYP/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/3-21G
 hartrees
Energy at 0K-154.102545
Energy at 298.15K-154.109163
HF Energy-154.102545
Nuclear repulsion energy81.399962
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 BLYP/3-21G
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 3047 3030 29.74 92.88 0.30 0.46
2 A1 2902 2886 56.44 191.16 0.03 0.07
3 A1 1550 1541 0.22 33.69 0.75 0.86
4 A1 1485 1476 0.35 14.88 0.66 0.80
5 A1 1210 1203 0.04 6.01 0.72 0.84
6 A1 837 832 16.51 9.30 0.34 0.50
7 A1 391 389 3.21 0.94 0.10 0.19
8 A2 2924 2908 0.00 22.22 0.75 0.86
9 A2 1505 1496 0.00 54.38 0.75 0.86
10 A2 1107 1101 0.00 14.72 0.75 0.86
11 A2 250 249 0.00 0.34 0.75 0.86
12 B1 2923 2907 172.30 92.66 0.75 0.86
13 B1 1512 1503 11.77 1.30 0.75 0.86
14 B1 1142 1136 1.26 5.14 0.75 0.86
15 B1 241 240 7.06 0.05 0.75 0.86
16 B2 3044 3027 29.61 73.93 0.75 0.86
17 B2 2886 2870 54.96 5.09 0.75 0.86
18 B2 1531 1523 16.99 5.94 0.75 0.86
19 B2 1442 1434 13.53 12.68 0.75 0.86
20 B2 1106 1100 22.09 3.71 0.75 0.86
21 B2 1023 1017 67.90 2.92 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17028.6 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 16934.9 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 BLYP/3-21G
ABC
1.20645 0.31621 0.27737

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.628
C2 0.000 1.208 -0.212
C3 0.000 -1.208 -0.212
H4 0.000 2.058 0.486
H5 0.000 -2.058 0.486
H6 0.898 1.269 -0.861
H7 -0.898 1.269 -0.861
H8 -0.898 -1.269 -0.861
H9 0.898 -1.269 -0.861

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.47141.47142.06272.06272.15282.15282.15282.1528
C21.47142.41621.09983.33971.10991.10992.71392.7139
C31.47142.41623.33971.09982.71392.71391.10991.1099
H42.06271.09983.33974.11571.80091.80093.70013.7001
H52.06273.33971.09984.11573.70013.70011.80091.8009
H62.15281.10992.71391.80093.70011.79683.11002.5384
H72.15281.10992.71391.80093.70011.79682.53843.1100
H82.15282.71391.10993.70011.80093.11002.53841.7968
H92.15282.71391.10993.70011.80092.53843.11001.7968

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 105.780 O1 C2 H6 112.269
O1 C2 H7 112.269 O1 C3 H5 105.780
O1 C3 H8 112.269 O1 C3 H9 112.269
C2 O1 C3 110.373 H4 C2 H6 109.179
H4 C2 H7 109.179 H5 C3 H8 109.179
H5 C3 H9 109.179 H6 C2 H7 108.092
H8 C3 H9 108.092
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.423      
2 C -0.303      
3 C -0.303      
4 H 0.192      
5 H 0.192      
6 H 0.161      
7 H 0.161      
8 H 0.161      
9 H 0.161      


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 -1.409 1.409
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.227 0.000 0.000
y 0.000 -16.739 0.000
z 0.000 0.000 -20.987
Traceless
 xyz
x -1.365 0.000 0.000
y 0.000 3.868 0.000
z 0.000 0.000 -2.504
Polar
3z2-r2-5.007
x2-y2-3.489
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.376 0.000 0.000
y 0.000 4.705 0.000
z 0.000 0.000 3.433


<r2> (average value of r2) Å2
<r2> 54.852
(<r2>)1/2 7.406