return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B3LYPultrafine/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYPultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-155.046032
Energy at 298.15K-155.052658
HF Energy-155.046032
Nuclear repulsion energy83.527172
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 B3LYPultrafine/aug-cc-pVDZ
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 3032 21.46 104.07 0.29 0.45
2 A1 2976 2888 66.18 329.53 0.02 0.04
3 A1 1483 1439 3.91 4.43 0.73 0.85
4 A1 1459 1416 0.06 3.92 0.73 0.85
5 A1 1252 1215 6.44 0.39 0.72 0.83
6 A1 935 908 35.66 8.36 0.32 0.49
7 A1 414 401 2.43 1.38 0.14 0.24
8 A2 3022 2932 0.00 21.95 0.75 0.86
9 A2 1451 1408 0.00 12.62 0.75 0.86
10 A2 1145 1111 0.00 1.74 0.75 0.86
11 A2 197 191 0.00 0.25 0.75 0.86
12 B1 3017 2927 130.38 110.60 0.75 0.86
13 B1 1463 1420 14.15 0.07 0.75 0.86
14 B1 1175 1140 6.78 0.00 0.75 0.86
15 B1 240 233 5.48 0.00 0.75 0.86
16 B2 3123 3031 29.38 68.88 0.75 0.86
17 B2 2964 2877 61.59 2.54 0.75 0.86
18 B2 1466 1422 11.93 1.59 0.75 0.86
19 B2 1430 1387 1.69 1.66 0.75 0.86
20 B2 1185 1150 102.40 0.59 0.75 0.86
21 B2 1107 1075 39.34 1.66 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17313.7 cm-1
Scaled (by 0.9704) Zero Point Vibrational Energy (zpe) 16801.2 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 B3LYPultrafine/aug-cc-pVDZ
ABC
1.30190 0.33112 0.29386

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.590
C2 0.000 1.177 -0.196
C3 0.000 -1.177 -0.196
H4 0.000 2.029 0.494
H5 0.000 -2.029 0.494
H6 0.897 1.231 -0.839
H7 -0.897 1.231 -0.839
H8 -0.897 -1.231 -0.839
H9 0.897 -1.231 -0.839

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.41541.41542.03162.03162.08912.08912.08912.0891
C21.41542.35411.09633.27971.10541.10542.64942.6494
C31.41542.35413.27971.09632.64942.64941.10541.1054
H42.03161.09633.27974.05871.79401.79403.63503.6350
H52.03163.27971.09634.05873.63503.63501.79401.7940
H62.08911.10542.64941.79403.63501.79473.04722.4626
H72.08911.10542.64941.79403.63501.79472.46263.0472
H82.08912.64941.10543.63501.79403.04722.46261.7947
H92.08912.64941.10543.63501.79402.46263.04721.7947

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 107.285 O1 C2 H6 111.343
O1 C2 H7 111.343 O1 C3 H5 107.285
O1 C3 H8 111.343 O1 C3 H9 111.343
C2 O1 C3 112.526 H4 C2 H6 109.138
H4 C2 H7 109.138 H5 C3 H8 109.138
H5 C3 H9 109.138 H6 C2 H7 108.548
H8 C3 H9 108.548
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.495      
2 C 1.119      
3 C 1.119      
4 H -0.436      
5 H -0.436      
6 H -0.218      
7 H -0.218      
8 H -0.218      
9 H -0.218      


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 -1.270 1.270
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.516 0.000 0.000
y 0.000 -17.744 0.000
z 0.000 0.000 -21.673
Traceless
 xyz
x -0.807 0.000 0.000
y 0.000 3.351 0.000
z 0.000 0.000 -2.543
Polar
3z2-r2-5.087
x2-y2-2.772
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.719 0.000 0.000
y 0.000 5.901 0.000
z 0.000 0.000 4.812


<r2> (average value of r2) Å2
<r2> 53.177
(<r2>)1/2 7.292