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

using model chemistry: B3LYP/CEP-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 B3LYP/CEP-31G*
 hartrees
Energy at 0K-30.866866
Energy at 298.15K-30.873525
HF Energy-30.866866
Nuclear repulsion energy49.753869
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-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 3125 3018 46.74 92.63 0.35 0.51
2 A1 2986 2884 90.99 253.02 0.03 0.06
3 A1 1515 1463 1.08 15.24 0.75 0.86
4 A1 1489 1438 0.56 16.73 0.68 0.81
5 A1 1258 1214 2.17 4.88 0.57 0.73
6 A1 942 910 38.34 14.91 0.31 0.47
7 A1 411 397 2.99 0.28 0.26 0.42
8 A2 3029 2926 0.00 12.08 0.75 0.86
9 A2 1477 1427 0.00 35.11 0.75 0.86
10 A2 1155 1115 0.00 14.56 0.75 0.86
11 A2 222 214 0.00 0.76 0.75 0.86
12 B1 3027 2923 195.83 101.57 0.75 0.86
13 B1 1489 1438 12.41 0.52 0.75 0.86
14 B1 1183 1142 3.10 3.78 0.75 0.86
15 B1 254 246 7.02 0.00 0.75 0.86
16 B2 3120 3013 48.61 76.23 0.75 0.86
17 B2 2974 2872 77.46 0.47 0.75 0.86
18 B2 1492 1441 13.68 2.30 0.75 0.86
19 B2 1461 1411 5.93 8.52 0.75 0.86
20 B2 1191 1151 107.33 0.39 0.75 0.86
21 B2 1114 1076 38.71 6.61 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17457.4 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 16858.6 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-31G*
ABC
1.27165 0.32986 0.29157

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.601
C2 0.000 1.178 -0.199
C3 0.000 -1.178 -0.199
H4 0.000 2.040 0.486
H5 0.000 -2.040 0.486
H6 0.901 1.232 -0.847
H7 -0.901 1.232 -0.847
H8 -0.901 -1.232 -0.847
H9 0.901 -1.232 -0.847

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.42461.42462.04362.04362.10452.10452.10452.1045
C21.42462.35661.10153.29091.11121.11122.65372.6537
C31.42462.35663.29091.10152.65372.65371.11121.1112
H42.04361.10153.29094.08081.80111.80113.64693.6469
H52.04363.29091.10154.08083.64693.64691.80111.8011
H62.10451.11122.65371.80113.64691.80203.05282.4642
H72.10451.11122.65371.80113.64691.80202.46423.0528
H82.10452.65371.11123.64691.80113.05282.46421.8020
H92.10452.65371.11123.64691.80112.46423.05281.8020

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 107.308 O1 C2 H6 111.583
O1 C2 H7 111.583 O1 C3 H5 107.308
O1 C3 H8 111.583 O1 C3 H9 111.583
C2 O1 C3 111.609 H4 C2 H6 108.975
H4 C2 H7 108.975 H5 C3 H8 108.975
H5 C3 H9 108.975 H6 C2 H7 108.358
H8 C3 H9 108.358
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.200      
2 C -0.410      
3 C -0.410      
4 H 0.216      
5 H 0.216      
6 H 0.147      
7 H 0.147      
8 H 0.147      
9 H 0.147      


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 -1.586 1.586
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.726 0.000 0.000
y 0.000 -16.774 0.000
z 0.000 0.000 -20.846
Traceless
 xyz
x -0.915 0.000 0.000
y 0.000 3.511 0.000
z 0.000 0.000 -2.596
Polar
3z2-r2-5.191
x2-y2-2.951
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.449 0.000 0.000
y 0.000 4.336 0.000
z 0.000 0.000 3.355


<r2> (average value of r2) Å2
<r2> 46.525
(<r2>)1/2 6.821