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

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/6-31G**
 hartrees
Energy at 0K-154.941265
Energy at 298.15K-154.947969
HF Energy-154.941265
Nuclear repulsion energy84.372322
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 B1B95/6-31G**
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 3170 3027 27.57 93.74 0.34 0.51
2 A1 3016 2880 59.02 206.78 0.03 0.06
3 A1 1552 1481 0.70 21.62 0.74 0.85
4 A1 1518 1449 0.04 15.40 0.74 0.85
5 A1 1283 1225 5.76 3.11 0.60 0.75
6 A1 993 948 36.38 8.88 0.44 0.61
7 A1 410 391 2.49 0.45 0.02 0.04
8 A2 3063 2924 0.00 14.52 0.75 0.86
9 A2 1512 1443 0.00 40.83 0.75 0.86
10 A2 1180 1127 0.00 7.74 0.75 0.86
11 A2 225 215 0.00 0.24 0.75 0.86
12 B1 3056 2918 150.61 97.40 0.75 0.86
13 B1 1520 1452 11.72 0.44 0.75 0.86
14 B1 1213 1158 6.81 3.40 0.75 0.86
15 B1 252 240 6.19 0.07 0.75 0.86
16 B2 3169 3026 33.56 74.10 0.75 0.86
17 B2 3004 2868 56.24 1.45 0.75 0.86
18 B2 1529 1460 14.88 3.49 0.75 0.86
19 B2 1485 1417 7.31 9.99 0.75 0.86
20 B2 1249 1192 131.26 0.16 0.75 0.86
21 B2 1151 1099 15.46 4.65 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17774.4 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 16971.0 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 B1B95/6-31G**
ABC
1.31190 0.34052 0.30123

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.590
C2 0.000 1.158 -0.194
C3 0.000 -1.158 -0.194
H4 0.000 2.013 0.483
H5 0.000 -2.013 0.483
H6 0.890 1.215 -0.838
H7 -0.890 1.215 -0.838
H8 -0.890 -1.215 -0.838
H9 0.890 -1.215 -0.838

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.39881.39882.01542.01542.07552.07552.07552.0755
C21.39882.31651.09063.24241.10011.10012.61512.6151
C31.39882.31653.24241.09062.61512.61511.10011.1001
H42.01541.09063.24244.02511.78191.78193.59933.5993
H52.01543.24241.09064.02513.59933.59931.78191.7819
H62.07551.10012.61511.78193.59931.78093.01252.4297
H72.07551.10012.61511.78193.59931.78092.42973.0125
H82.07552.61511.10013.59931.78193.01252.42971.7809
H92.07552.61511.10013.59931.78192.42973.01251.7809

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 107.467 O1 C2 H6 111.754
O1 C2 H7 111.754 O1 C3 H5 107.467
O1 C3 H8 111.754 O1 C3 H9 111.754
C2 O1 C3 111.791 H4 C2 H6 108.860
H4 C2 H7 108.860 H5 C3 H8 108.860
H5 C3 H9 108.860 H6 C2 H7 108.077
H8 C3 H9 108.077
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.454      
2 C -0.232      
3 C -0.232      
4 H 0.175      
5 H 0.175      
6 H 0.142      
7 H 0.142      
8 H 0.142      
9 H 0.142      


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 -1.290 1.290
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.974 0.000 0.000
y 0.000 -16.893 0.000
z 0.000 0.000 -20.801
Traceless
 xyz
x -1.127 0.000 0.000
y 0.000 3.495 0.000
z 0.000 0.000 -2.368
Polar
3z2-r2-4.736
x2-y2-3.081
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.624 0.000 0.000
y 0.000 4.501 0.000
z 0.000 0.000 3.555


<r2> (average value of r2) Å2
<r2> 51.793
(<r2>)1/2 7.197