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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-30.829495
Energy at 298.15K-30.836071
HF Energy-30.829495
Nuclear repulsion energy49.105747
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 3115 3036 40.49 99.36 0.37 0.54
2 A1 2945 2870 77.80 288.43 0.03 0.05
3 A1 1521 1482 1.72 21.26 0.75 0.86
4 A1 1485 1447 0.01 11.43 0.75 0.86
5 A1 1239 1207 0.19 6.18 0.60 0.75
6 A1 875 853 29.59 16.54 0.40 0.57
7 A1 385 375 3.61 0.72 0.09 0.16
8 A2 3009 2933 0.00 20.65 0.75 0.86
9 A2 1489 1451 0.00 40.48 0.75 0.86
10 A2 1130 1101 0.00 14.58 0.75 0.86
11 A2 202 197 0.00 0.47 0.75 0.86
12 B1 3010 2933 199.27 117.86 0.75 0.86
13 B1 1500 1462 15.58 0.12 0.75 0.86
14 B1 1160 1131 4.89 4.35 0.75 0.86
15 B1 230 224 9.23 0.02 0.75 0.86
16 B2 3112 3033 37.03 88.16 0.75 0.86
17 B2 2933 2858 71.83 1.22 0.75 0.86
18 B2 1502 1464 16.87 6.03 0.75 0.86
19 B2 1460 1422 4.33 8.46 0.75 0.86
20 B2 1155 1126 58.43 0.24 0.75 0.86
21 B2 1078 1050 59.02 9.45 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17267.2 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 16826.9 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
1.27015 0.31327 0.27828

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 0.601
C2 0.000 1.216 -0.204
C3 0.000 -1.216 -0.204
H4 0.000 2.054 0.500
H5 0.000 -2.054 0.500
H6 0.898 1.274 -0.842
H7 -0.898 1.274 -0.842
H8 -0.898 -1.274 -0.842
H9 0.898 -1.274 -0.842

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.45871.45872.05622.05622.12432.12432.12432.1243
C21.45872.43291.09343.34491.10341.10342.72342.7234
C31.45872.43293.34491.09342.72342.72341.10341.1034
H42.05621.09343.34494.10731.79281.79283.69873.6987
H52.05623.34491.09344.10733.69873.69871.79281.7928
H62.12431.10342.72341.79283.69871.79673.11782.5481
H72.12431.10342.72341.79283.69871.79672.54813.1178
H82.12432.72341.10343.69871.79283.11782.54811.7967
H92.12432.72341.10343.69871.79282.54813.11781.7967

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 106.478 O1 C2 H6 111.264
O1 C2 H7 111.264 O1 C3 H5 106.478
O1 C3 H8 111.264 O1 C3 H9 111.264
C2 O1 C3 113.015 H4 C2 H6 109.391
H4 C2 H7 109.391 H5 C3 H8 109.391
H5 C3 H9 109.391 H6 C2 H7 109.001
H8 C3 H9 109.001
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 -0.280      
2 C -0.295      
3 C -0.295      
4 H 0.171      
5 H 0.171      
6 H 0.132      
7 H 0.132      
8 H 0.132      
9 H 0.132      


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 -1.797 1.797
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.420 0.000 0.000
y 0.000 -16.614 0.000
z 0.000 0.000 -21.825
Traceless
 xyz
x -1.201 0.000 0.000
y 0.000 4.509 0.000
z 0.000 0.000 -3.308
Polar
3z2-r2-6.615
x2-y2-3.807
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.955 0.000 0.000
y 0.000 5.048 0.000
z 0.000 0.000 3.995


<r2> (average value of r2) Å2
<r2> 48.083
(<r2>)1/2 6.934