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

using model chemistry: B1B95/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/STO-3G
 hartrees
Energy at 0K-152.976304
Energy at 298.15K-152.982891
HF Energy-152.976304
Nuclear repulsion energy82.276807
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 B1B95/STO-3G
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 3476 3070 3.03 35.36 0.59 0.74
2 A1 3264 2882 8.77 80.09 0.01 0.02
3 A1 1686 1489 1.46 26.36 0.75 0.86
4 A1 1617 1428 0.49 6.17 0.74 0.85
5 A1 1338 1181 0.01 3.43 0.61 0.76
6 A1 1004 887 3.93 8.07 0.31 0.48
7 A1 450 398 1.04 0.58 0.13 0.24
8 A2 3409 3010 0.00 7.75 0.75 0.86
9 A2 1655 1461 0.00 32.08 0.75 0.86
10 A2 1188 1049 0.00 5.13 0.75 0.86
11 A2 238 210 0.00 0.04 0.75 0.86
12 B1 3404 3006 25.23 41.80 0.75 0.86
13 B1 1653 1459 9.16 2.53 0.75 0.86
14 B1 1203 1062 3.66 2.77 0.75 0.86
15 B1 261 230 3.26 0.01 0.75 0.86
16 B2 3474 3068 0.00 31.74 0.75 0.86
17 B2 3262 2881 18.60 0.02 0.75 0.86
18 B2 1680 1483 9.14 0.44 0.75 0.86
19 B2 1579 1394 13.06 6.90 0.75 0.86
20 B2 1258 1110 23.24 1.56 0.75 0.86
21 B2 1172 1035 0.06 2.76 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 19134.5 cm-1
Scaled (by 0.883) Zero Point Vibrational Energy (zpe) 16895.8 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 B1B95/STO-3G
ABC
1.16906 0.33363 0.28830

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.650
C2 0.000 1.170 -0.217
C3 0.000 -1.170 -0.217
H4 0.000 2.056 0.439
H5 0.000 -2.056 0.439
H6 0.896 1.213 -0.869
H7 -0.896 1.213 -0.869
H8 -0.896 -1.213 -0.869
H9 0.896 -1.213 -0.869

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.45631.45632.06692.06692.14032.14032.14032.1403
C21.45632.33951.10293.29201.10881.10882.62752.6275
C31.45632.33953.29201.10292.62752.62751.10881.1088
H42.06691.10293.29204.11221.79591.79593.63303.6330
H52.06693.29201.10294.11223.63303.63301.79591.7959
H62.14031.10882.62751.79593.63301.79233.01582.4254
H72.14031.10882.62751.79593.63301.79232.42543.0158
H82.14032.62751.10883.63301.79593.01582.42541.7923
H92.14032.62751.10883.63301.79592.42543.01581.7923

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 106.919 O1 C2 H6 112.403
O1 C2 H7 112.403 O1 C3 H5 106.919
O1 C3 H8 112.403 O1 C3 H9 112.403
C2 O1 C3 106.884 H4 C2 H6 108.579
H4 C2 H7 108.579 H5 C3 H8 108.579
H5 C3 H9 108.579 H6 C2 H7 107.840
H8 C3 H9 107.840
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.191      
2 C -0.133      
3 C -0.133      
4 H 0.086      
5 H 0.086      
6 H 0.072      
7 H 0.072      
8 H 0.072      
9 H 0.072      


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 -1.223 1.223
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.427 0.000 0.000
y 0.000 -16.619 0.000
z 0.000 0.000 -19.205
Traceless
 xyz
x -0.514 0.000 0.000
y 0.000 2.197 0.000
z 0.000 0.000 -1.682
Polar
3z2-r2-3.364
x2-y2-1.807
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.662 0.000 0.000
y 0.000 2.751 0.000
z 0.000 0.000 1.801


<r2> (average value of r2) Å2
<r2> 52.618
(<r2>)1/2 7.254