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

using model chemistry: B3PW91/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-155.027266
Energy at 298.15K-155.033914
Nuclear repulsion energy84.174299
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/cc-pVTZ
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 3118 2998 23.43      
2 A1 2974 2860 62.48      
3 A1 1511 1453 2.92      
4 A1 1482 1425 0.01      
5 A1 1265 1217 5.92      
6 A1 961 925 35.49      
7 A1 406 391 2.38      
8 A2 3016 2901 0.00      
9 A2 1474 1418 0.00      
10 A2 1161 1116 0.00      
11 A2 208 200 0.00      
12 B1 3010 2895 137.66      
13 B1 1483 1426 13.20      
14 B1 1192 1146 7.03      
15 B1 237 228 5.29      
16 B2 3116 2997 30.54      
17 B2 2962 2849 57.94      
18 B2 1491 1434 13.69      
19 B2 1452 1396 2.64      
20 B2 1209 1163 118.67      
21 B2 1127 1084 26.09      

Unscaled Zero Point Vibrational Energy (zpe) 17427.8 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 16758.6 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/cc-pVTZ
ABC
1.31754 0.33708 0.29880

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.588
C2 0.000 1.165 -0.194
C3 0.000 -1.165 -0.194
H4 0.000 2.018 0.484
H5 0.000 -2.018 0.484
H6 0.890 1.223 -0.836
H7 -0.890 1.223 -0.836
H8 -0.890 -1.223 -0.836
H9 0.890 -1.223 -0.836

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.40321.40322.02042.02042.07742.07742.07742.0774
C21.40322.33021.08963.25441.09891.09892.62832.6283
C31.40322.33023.25441.08962.62832.62831.09891.0989
H42.02041.08963.25444.03541.77971.77973.61093.6109
H52.02043.25441.08964.03543.61093.61091.77971.7797
H62.07741.09892.62831.77973.61091.78013.02532.4462
H72.07741.09892.62831.77973.61091.78012.44623.0253
H82.07742.62831.09893.61091.77973.02532.44621.7801
H92.07742.62831.09893.61091.77972.44623.02531.7801

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 107.623 O1 C2 H6 111.674
O1 C2 H7 111.674 O1 C3 H5 107.623
O1 C3 H8 111.674 O1 C3 H9 111.674
C2 O1 C3 112.270 H4 C2 H6 108.813
H4 C2 H7 108.813 H5 C3 H8 108.813
H5 C3 H9 108.813 H6 C2 H7 108.175
H8 C3 H9 108.175
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.268      
2 C -0.063      
3 C -0.063      
4 H 0.096      
5 H 0.096      
6 H 0.051      
7 H 0.051      
8 H 0.051      
9 H 0.051      


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 -1.193 1.193
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.138 0.000 0.000
y 0.000 -17.298 0.000
z 0.000 0.000 -21.065
Traceless
 xyz
x -0.957 0.000 0.000
y 0.000 3.304 0.000
z 0.000 0.000 -2.347
Polar
3z2-r2-4.694
x2-y2-2.840
xy0.000
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 52.246
(<r2>)1/2 7.228