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

using model chemistry: B3PW91/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G
 hartrees
Energy at 0K-154.917416
Energy at 298.15K-154.924028
Nuclear repulsion energy82.618205
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 B3PW91/6-31G
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 3178 3043 26.68      
2 A1 3009 2881 54.23      
3 A1 1555 1489 1.93      
4 A1 1511 1448 0.23      
5 A1 1257 1204 0.03      
6 A1 898 860 25.46      
7 A1 398 381 3.96      
8 A2 3067 2937 0.00      
9 A2 1521 1457 0.00      
10 A2 1154 1105 0.00      
11 A2 216 207 0.00      
12 B1 3064 2934 154.44      
13 B1 1529 1465 18.79      
14 B1 1185 1135 3.23      
15 B1 232 222 9.32      
16 B2 3175 3041 23.80      
17 B2 2998 2871 54.87      
18 B2 1536 1471 17.03      
19 B2 1483 1421 2.30      
20 B2 1176 1126 56.62      
21 B2 1098 1051 50.72      

Unscaled Zero Point Vibrational Energy (zpe) 17619.8 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 16874.4 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 B3PW91/6-31G
ABC
1.28955 0.32041 0.28454

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.595
C2 0.000 1.201 -0.200
C3 0.000 -1.201 -0.200
H4 0.000 2.035 0.502
H5 0.000 -2.035 0.502
H6 0.894 1.264 -0.839
H7 -0.894 1.264 -0.839
H8 -0.894 -1.264 -0.839
H9 0.894 -1.264 -0.839

Atom - Atom Distances (Å)
  O1 C2 C3 H4 H5 H6 H7 H8 H9
O11.44031.44032.03722.03722.11002.11002.11002.1100
C21.44032.40171.09063.31131.10041.10042.69822.6982
C31.44032.40173.31131.09062.69822.69821.10041.1004
H42.03721.09063.31134.07011.78701.78703.67143.6714
H52.03723.31131.09064.07013.67143.67141.78701.7870
H62.11001.10042.69821.78703.67141.78753.09532.5270
H72.11001.10042.69821.78703.67141.78752.52703.0953
H82.11002.69821.10043.67141.78703.09532.52701.7875
H92.11002.69821.10043.67141.78702.52703.09531.7875

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 106.386 O1 C2 H6 111.596
O1 C2 H7 111.596 O1 C3 H5 106.386
O1 C3 H8 111.596 O1 C3 H9 111.596
C2 O1 C3 112.975 H4 C2 H6 109.295
H4 C2 H7 109.295 H5 C3 H8 109.295
H5 C3 H9 109.295 H6 C2 H7 108.620
H8 C3 H9 108.620
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.519      
2 C -0.220      
3 C -0.220      
4 H 0.184      
5 H 0.184      
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 -1.725 1.725
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.096 0.000 0.000
y 0.000 -16.286 0.000
z 0.000 0.000 -21.261
Traceless
 xyz
x -1.323 0.000 0.000
y 0.000 4.392 0.000
z 0.000 0.000 -3.070
Polar
3z2-r2-6.140
x2-y2-3.810
xy0.000
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 53.804
(<r2>)1/2 7.335