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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-30.820830
Energy at 298.15K-30.827384
HF Energy-30.820830
Nuclear repulsion energy48.987990
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 3155 3056 57.59 93.11 0.37 0.54
2 A1 2989 2895 96.32 285.20 0.03 0.06
3 A1 1516 1468 2.94 22.56 0.75 0.86
4 A1 1482 1435 0.00 13.70 0.68 0.81
5 A1 1234 1195 0.11 7.81 0.58 0.73
6 A1 871 844 26.53 22.99 0.27 0.43
7 A1 384 372 4.41 0.35 0.32 0.48
8 A2 3054 2957 0.00 14.19 0.75 0.86
9 A2 1484 1437 0.00 42.13 0.75 0.86
10 A2 1130 1094 0.00 20.60 0.75 0.86
11 A2 207 200 0.00 0.69 0.75 0.86
12 B1 3054 2957 229.92 108.52 0.75 0.86
13 B1 1495 1448 18.63 0.88 0.75 0.86
14 B1 1156 1120 1.88 4.85 0.75 0.86
15 B1 230 223 10.07 0.03 0.75 0.86
16 B2 3150 3051 43.67 84.65 0.75 0.86
17 B2 2978 2884 84.56 0.69 0.75 0.86
18 B2 1497 1450 16.31 4.16 0.75 0.86
19 B2 1459 1413 1.34 8.45 0.75 0.86
20 B2 1155 1119 56.87 0.00 0.75 0.86
21 B2 1079 1045 46.18 10.47 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17379.7 cm-1
Scaled (by 0.9684) Zero Point Vibrational Energy (zpe) 16830.5 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
1.25909 0.31294 0.27781

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 0.604
C2 0.000 1.216 -0.204
C3 0.000 -1.216 -0.204
H4 0.000 2.058 0.502
H5 0.000 -2.058 0.502
H6 0.903 1.273 -0.846
H7 -0.903 1.273 -0.846
H8 -0.903 -1.273 -0.846
H9 0.903 -1.273 -0.846

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.46001.46002.06072.06072.13042.13042.13042.1304
C21.46002.43261.09903.34991.10971.10972.72512.7251
C31.46002.43263.34991.09902.72512.72511.10971.1097
H42.06071.09903.34994.11651.80301.80303.70583.7058
H52.06073.34991.09904.11653.70583.70581.80301.8030
H62.13041.10972.72511.80303.70581.80643.12212.5464
H72.13041.10972.72511.80303.70581.80642.54643.1221
H82.13042.72511.10973.70581.80303.12212.54641.8064
H92.13042.72511.10973.70581.80302.54643.12211.8064

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 106.423 O1 C2 H6 111.275
O1 C2 H7 111.275 O1 C3 H5 106.423
O1 C3 H8 111.275 O1 C3 H9 111.275
C2 O1 C3 112.836 H4 C2 H6 109.432
H4 C2 H7 109.432 H5 C3 H8 109.432
H5 C3 H9 109.432 H6 C2 H7 108.957
H8 C3 H9 108.957
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 -0.261      
2 C -0.379      
3 C -0.379      
4 H 0.213      
5 H 0.213      
6 H 0.148      
7 H 0.148      
8 H 0.148      
9 H 0.148      


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 -2.041 2.041
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.813 0.000 0.000
y 0.000 -16.208 0.000
z 0.000 0.000 -21.368
Traceless
 xyz
x -1.025 0.000 0.000
y 0.000 4.383 0.000
z 0.000 0.000 -3.358
Polar
3z2-r2-6.716
x2-y2-3.605
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.289 0.000 0.000
y 0.000 4.374 0.000
z 0.000 0.000 3.299


<r2> (average value of r2) Å2
<r2> 47.891
(<r2>)1/2 6.920