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

using model chemistry: mPW1PW91/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 mPW1PW91/cc-pVTZ
 hartrees
Energy at 0K-155.043021
Energy at 298.15K-155.049691
HF Energy-155.043021
Nuclear repulsion energy84.351537
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 mPW1PW91/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 3135 3007 23.44 101.00 0.31 0.47
2 A1 2992 2870 60.73 282.23 0.02 0.04
3 A1 1519 1457 3.12 9.06 0.74 0.85
4 A1 1492 1431 0.03 5.86 0.74 0.85
5 A1 1275 1223 6.27 1.04 0.53 0.69
6 A1 974 934 35.60 7.03 0.46 0.63
7 A1 409 393 2.41 0.58 0.06 0.11
8 A2 3036 2912 0.00 19.18 0.75 0.86
9 A2 1483 1422 0.00 19.34 0.75 0.86
10 A2 1168 1121 0.00 2.92 0.75 0.86
11 A2 210 201 0.00 0.23 0.75 0.86
12 B1 3030 2906 134.31 103.50 0.75 0.86
13 B1 1492 1431 13.70 0.01 0.75 0.86
14 B1 1200 1151 7.05 0.73 0.75 0.86
15 B1 243 233 5.32 0.01 0.75 0.86
16 B2 3134 3006 30.37 71.44 0.75 0.86
17 B2 2981 2859 56.11 1.64 0.75 0.86
18 B2 1499 1438 13.60 2.90 0.75 0.86
19 B2 1460 1400 2.47 2.99 0.75 0.86
20 B2 1224 1174 124.37 0.51 0.75 0.86
21 B2 1136 1090 22.07 2.32 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17544.9 cm-1
Scaled (by 0.9592) Zero Point Vibrational Energy (zpe) 16829.0 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 mPW1PW91/cc-pVTZ
ABC
1.32188 0.33875 0.30024

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.587
C2 0.000 1.162 -0.194
C3 0.000 -1.162 -0.194
H4 0.000 2.015 0.483
H5 0.000 -2.015 0.483
H6 0.889 1.219 -0.835
H7 -0.889 1.219 -0.835
H8 -0.889 -1.219 -0.835
H9 0.889 -1.219 -0.835

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.39991.39992.01752.01752.07282.07282.07282.0728
C21.39992.32411.08833.24811.09741.09742.62102.6210
C31.39992.32413.24811.08832.62102.62101.09741.0974
H42.01751.08833.24814.02971.77741.77743.60303.6030
H52.01753.24811.08834.02973.60303.60301.77741.7774
H62.07281.09742.62101.77743.60301.77773.01692.4375
H72.07281.09742.62101.77743.60301.77772.43753.0169
H82.07282.62101.09743.60301.77743.01692.43751.7777
H92.07282.62101.09743.60301.77742.43753.01691.7777

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 107.701 O1 C2 H6 111.631
O1 C2 H7 111.631 O1 C3 H5 107.701
O1 C3 H8 111.631 O1 C3 H9 111.631
C2 O1 C3 112.225 H4 C2 H6 108.814
H4 C2 H7 108.814 H5 C3 H8 108.814
H5 C3 H9 108.814 H6 C2 H7 108.182
H8 C3 H9 108.182
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.265      
2 C -0.057      
3 C -0.057      
4 H 0.092      
5 H 0.092      
6 H 0.049      
7 H 0.049      
8 H 0.049      
9 H 0.049      


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 -20.115 0.000 0.000
y 0.000 -17.290 0.000
z 0.000 0.000 -21.047
Traceless
 xyz
x -0.946 0.000 0.000
y 0.000 3.291 0.000
z 0.000 0.000 -2.345
Polar
3z2-r2-4.689
x2-y2-2.825
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.235 0.000 0.000
y 0.000 5.296 0.000
z 0.000 0.000 4.217


<r2> (average value of r2) Å2
<r2> 52.053
(<r2>)1/2 7.215