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

using model chemistry: B3LYP/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/CEP-121G*
 hartrees
Energy at 0K-30.877697
Energy at 298.15K-30.884349
HF Energy-30.877697
Nuclear repulsion energy49.855054
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 B3LYP/CEP-121G*
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 3106 3011 40.73 109.23 0.34 0.51
2 A1 2963 2872 81.91 271.25 0.03 0.06
3 A1 1523 1476 0.55 14.80 0.75 0.86
4 A1 1496 1450 0.23 13.58 0.75 0.86
5 A1 1262 1223 5.19 4.18 0.58 0.73
6 A1 936 908 39.51 11.38 0.47 0.64
7 A1 410 397 2.32 0.65 0.04 0.07
8 A2 3003 2911 0.00 20.29 0.75 0.86
9 A2 1487 1441 0.00 34.37 0.75 0.86
10 A2 1156 1121 0.00 10.27 0.75 0.86
11 A2 212 205 0.00 0.51 0.75 0.86
12 B1 3001 2910 199.38 121.45 0.75 0.86
13 B1 1498 1452 10.41 0.00 0.75 0.86
14 B1 1187 1151 7.66 2.93 0.75 0.86
15 B1 251 243 6.76 0.09 0.75 0.86
16 B2 3105 3010 48.90 87.20 0.75 0.86
17 B2 2948 2857 68.02 1.47 0.75 0.86
18 B2 1503 1457 14.90 4.46 0.75 0.86
19 B2 1464 1419 9.20 7.84 0.75 0.86
20 B2 1189 1153 101.23 0.02 0.75 0.86
21 B2 1113 1079 51.65 6.82 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17406.0 cm-1
Scaled (by 0.9694) Zero Point Vibrational Energy (zpe) 16873.3 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 B3LYP/CEP-121G*
ABC
1.28481 0.32943 0.29154

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.598
C2 0.000 1.180 -0.199
C3 0.000 -1.180 -0.199
H4 0.000 2.035 0.485
H5 0.000 -2.035 0.485
H6 0.896 1.236 -0.842
H7 -0.896 1.236 -0.842
H8 -0.896 -1.236 -0.842
H9 0.896 -1.236 -0.842

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.42421.42422.03852.03852.09882.09882.09882.0988
C21.42422.36051.09523.28771.10441.10442.65582.6558
C31.42422.36053.28771.09522.65582.65581.10441.1044
H42.03851.09523.28774.07081.79041.79043.64223.6422
H52.03853.28771.09524.07083.64223.64221.79041.7904
H62.09881.10442.65581.79043.64221.79163.05242.4713
H72.09881.10442.65581.79043.64221.79162.47133.0524
H82.09882.65581.10443.64221.79043.05242.47131.7916
H92.09882.65581.10443.64221.79042.47133.05241.7916

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 107.303 O1 C2 H6 111.574
O1 C2 H7 111.574 O1 C3 H5 107.303
O1 C3 H8 111.574 O1 C3 H9 111.574
C2 O1 C3 111.937 H4 C2 H6 108.962
H4 C2 H7 108.962 H5 C3 H8 108.962
H5 C3 H9 108.962 H6 C2 H7 108.404
H8 C3 H9 108.404
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.274      
2 C -0.321      
3 C -0.321      
4 H 0.181      
5 H 0.181      
6 H 0.139      
7 H 0.139      
8 H 0.139      
9 H 0.139      


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 -1.361 1.361
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.395 0.000 0.000
y 0.000 -17.196 0.000
z 0.000 0.000 -21.398
Traceless
 xyz
x -1.098 0.000 0.000
y 0.000 3.700 0.000
z 0.000 0.000 -2.602
Polar
3z2-r2-5.205
x2-y2-3.198
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.135 0.000 0.000
y 0.000 5.017 0.000
z 0.000 0.000 4.073


<r2> (average value of r2) Å2
<r2> 46.801
(<r2>)1/2 6.841