return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: HSEh1PBE/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HSEh1PBE/STO-3G
 hartrees
Energy at 0K-152.888949
Energy at 298.15K-152.895569
HF Energy-152.888949
Nuclear repulsion energy82.234066
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 HSEh1PBE/STO-3G
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 3486 3078 3.30 34.71 0.59 0.74
2 A1 3272 2889 9.17 79.22 0.01 0.02
3 A1 1694 1496 1.49 25.86 0.75 0.86
4 A1 1626 1436 0.45 5.93 0.74 0.85
5 A1 1346 1189 0.02 3.38 0.61 0.76
6 A1 1009 891 4.02 7.84 0.31 0.48
7 A1 463 408 1.05 0.57 0.14 0.24
8 A2 3417 3017 0.00 7.79 0.75 0.86
9 A2 1662 1468 0.00 31.46 0.75 0.86
10 A2 1194 1054 0.00 5.02 0.75 0.86
11 A2 241 213 0.00 0.04 0.75 0.86
12 B1 3412 3013 26.32 41.48 0.75 0.86
13 B1 1662 1467 9.26 2.42 0.75 0.86
14 B1 1211 1070 3.41 2.71 0.75 0.86
15 B1 271 240 3.32 0.01 0.75 0.86
16 B2 3484 3076 0.00 31.40 0.75 0.86
17 B2 3270 2888 19.46 0.01 0.75 0.86
18 B2 1687 1490 9.27 0.45 0.75 0.86
19 B2 1586 1400 13.16 6.71 0.75 0.86
20 B2 1262 1115 23.35 1.50 0.75 0.86
21 B2 1178 1040 0.08 2.73 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 19216.0 cm-1
Scaled (by 0.8831) Zero Point Vibrational Energy (zpe) 16969.7 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 HSEh1PBE/STO-3G
ABC
1.16834 0.33321 0.28799

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.650
C2 0.000 1.171 -0.217
C3 0.000 -1.171 -0.217
H4 0.000 2.057 0.441
H5 0.000 -2.057 0.441
H6 0.897 1.214 -0.869
H7 -0.897 1.214 -0.869
H8 -0.897 -1.214 -0.869
H9 0.897 -1.214 -0.869

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.45681.45682.06722.06722.14162.14162.14162.1416
C21.45682.34101.10363.29341.10961.10962.62972.6297
C31.45682.34103.29341.10362.62972.62971.10961.1096
H42.06721.10363.29344.11311.79721.79723.63543.6354
H52.06723.29341.10364.11313.63543.63541.79721.7972
H62.14161.10962.62971.79723.63541.79363.01872.4280
H72.14161.10962.62971.79723.63541.79362.42803.0187
H82.14162.62971.10963.63541.79723.01872.42801.7936
H92.14162.62971.10963.63541.79722.42803.01871.7936

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 106.865 O1 C2 H6 112.415
O1 C2 H7 112.415 O1 C3 H5 106.865
O1 C3 H8 112.415 O1 C3 H9 112.415
C2 O1 C3 106.923 H4 C2 H6 108.591
H4 C2 H7 108.591 H5 C3 H8 108.591
H5 C3 H9 108.591 H6 C2 H7 107.847
H8 C3 H9 107.847
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.185      
2 C -0.140      
3 C -0.140      
4 H 0.087      
5 H 0.087      
6 H 0.073      
7 H 0.073      
8 H 0.073      
9 H 0.073      


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 -1.212 1.212
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.415 0.000 0.000
y 0.000 -16.618 0.000
z 0.000 0.000 -19.183
Traceless
 xyz
x -0.515 0.000 0.000
y 0.000 2.181 0.000
z 0.000 0.000 -1.667
Polar
3z2-r2-3.333
x2-y2-1.797
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.648 0.000 0.000
y 0.000 2.732 0.000
z 0.000 0.000 1.790


<r2> (average value of r2) Å2
<r2> 52.657
(<r2>)1/2 7.257