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

using model chemistry: BLYP/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 BLYP/6-31G**
 hartrees
Energy at 0K-154.960334
Energy at 298.15K-154.966962
HF Energy-154.960334
Nuclear repulsion energy82.974113
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/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 3046 3023 30.71 100.47 0.31 0.47
2 A1 2896 2874 67.16 214.61 0.03 0.06
3 A1 1496 1485 0.13 20.37 0.74 0.85
4 A1 1462 1451 0.01 17.84 0.73 0.84
5 A1 1233 1223 3.39 3.72 0.66 0.79
6 A1 903 896 31.17 7.83 0.41 0.59
7 A1 403 400 2.38 0.70 0.05 0.10
8 A2 2927 2905 0.00 20.92 0.75 0.86
9 A2 1452 1441 0.00 42.99 0.75 0.86
10 A2 1130 1122 0.00 9.25 0.75 0.86
11 A2 225 223 0.00 0.30 0.75 0.86
12 B1 2924 2901 168.94 99.37 0.75 0.86
13 B1 1461 1449 7.32 0.53 0.75 0.86
14 B1 1166 1157 5.07 3.84 0.75 0.86
15 B1 247 245 5.62 0.07 0.75 0.86
16 B2 3045 3021 36.48 77.01 0.75 0.86
17 B2 2880 2857 64.71 3.97 0.75 0.86
18 B2 1472 1461 13.07 4.39 0.75 0.86
19 B2 1432 1421 13.69 10.57 0.75 0.86
20 B2 1148 1140 69.00 0.68 0.75 0.86
21 B2 1083 1075 64.73 4.41 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17015.1 cm-1
Scaled (by 0.9923) Zero Point Vibrational Energy (zpe) 16884.1 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/6-31G**
ABC
1.27515 0.32775 0.28988

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/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 1.182 -0.199
C3 0.000 -1.182 -0.199
H4 0.000 2.038 0.492
H5 0.000 -2.038 0.492
H6 0.898 1.246 -0.849
H7 -0.898 1.246 -0.849
H8 -0.898 -1.246 -0.849
H9 0.898 -1.246 -0.849

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.42681.42682.04102.04102.11112.11112.11112.1111
C21.42682.36471.09983.29381.11021.11022.66942.6694
C31.42682.36473.29381.09982.66942.66941.11021.1102
H42.04101.09983.29384.07641.79731.79733.65923.6592
H52.04103.29381.09984.07643.65923.65921.79731.7973
H62.11111.11022.66941.79733.65921.79593.07192.4923
H72.11111.11022.66941.79733.65921.79592.49233.0719
H82.11112.66941.11023.65921.79733.07192.49231.7959
H92.11112.66941.11023.65921.79732.49233.07191.7959

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 107.053 O1 C2 H6 112.036
O1 C2 H7 112.036 O1 C3 H5 107.053
O1 C3 H8 112.036 O1 C3 H9 112.036
C2 O1 C3 111.921 H4 C2 H6 108.834
H4 C2 H7 108.834 H5 C3 H8 108.834
H5 C3 H9 108.834 H6 C2 H7 107.967
H8 C3 H9 107.967
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.428      
2 C -0.045      
3 C -0.045      
4 H 0.102      
5 H 0.102      
6 H 0.078      
7 H 0.078      
8 H 0.078      
9 H 0.078      


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 -1.198 1.198
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.197 0.000 0.000
y 0.000 -17.190 0.000
z 0.000 0.000 -20.965
Traceless
 xyz
x -1.119 0.000 0.000
y 0.000 3.390 0.000
z 0.000 0.000 -2.271
Polar
3z2-r2-4.542
x2-y2-3.006
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.777 0.000 0.000
y 0.000 4.938 0.000
z 0.000 0.000 3.763


<r2> (average value of r2) Å2
<r2> 53.385
(<r2>)1/2 7.307