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All results from a given calculation for C4H8O2 (Ethene, 1,1-dimethoxy-)

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-307.523629
Energy at 298.15K-307.533012
Nuclear repulsion energy249.390550
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
(Å4/u)
Dep P Dep U
1 A1 3241 3101 0.40      
2 A1 3176 3039 23.17      
3 A1 3040 2908 6.32      
4 A1 1729 1654 237.76      
5 A1 1538 1472 3.69      
6 A1 1505 1440 11.48      
7 A1 1442 1380 10.09      
8 A1 1246 1192 3.26      
9 A1 1201 1149 0.64      
10 A1 907 868 39.41      
11 A1 509 487 0.29      
12 A1 270 259 4.57      
13 A2 3106 2972 0.00      
14 A2 1515 1450 0.00      
15 A2 1188 1137 0.00      
16 A2 679 649 0.00      
17 A2 249 238 0.00      
18 A2 131 125 0.00      
19 B1 3107 2972 77.18      
20 B1 1515 1449 14.56      
21 B1 1193 1141 1.30      
22 B1 720 689 98.97      
23 B1 681 651 0.94      
24 B1 272 260 0.01      
25 B1 101 97 9.34      
26 B2 3321 3177 4.98      
27 B2 3176 3038 16.41      
28 B2 3039 2908 69.77      
29 B2 1533 1467 16.19      
30 B2 1512 1447 61.67      
31 B2 1377 1317 483.28      
32 B2 1228 1175 14.94      
33 B2 1094 1047 94.96      
34 B2 959 918 0.62      
35 B2 563 538 0.20      
36 B2 384 367 8.41      

Unscaled Zero Point Vibrational Energy (zpe) 26222.8 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 25087.3 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
0.30375 0.07727 0.06309

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)
C1 0.000 0.000 1.418
C2 0.000 0.000 0.075
H3 0.000 0.923 1.981
H4 0.000 -0.923 1.981
O5 0.000 1.078 -0.735
O6 0.000 -1.078 -0.735
C7 0.000 2.346 -0.113
C8 0.000 -2.346 -0.113
H9 0.000 3.077 -0.922
H10 0.000 -3.077 -0.922
H11 -0.895 2.484 0.508
H12 0.895 2.484 0.508
H13 0.895 -2.484 0.508
H14 -0.895 -2.484 0.508

Atom - Atom Distances (Å)
  C1 C2 H3 H4 O5 O6 C7 C8 H9 H10 H11 H12 H13 H14
C11.34391.08101.08102.40822.40822.80112.80113.86643.86642.79292.79292.79292.7929
C21.34392.11852.11851.34821.34822.35322.35323.23483.23482.67582.67582.67582.6758
H31.08102.11851.84552.72093.37382.53183.88183.61584.94302.32582.32583.81823.8182
H41.08102.11851.84553.37382.72093.88182.53184.94303.61583.81823.81822.32582.3258
O52.40821.34822.72093.37382.15631.41223.48002.00804.15982.07922.07923.87773.8777
O62.40821.34823.37382.72092.15633.48001.41224.15982.00803.87773.87772.07922.0792
C72.80112.35322.53183.88181.41223.48004.69151.09135.48331.09771.09774.95124.9512
C82.80112.35323.88182.53183.48001.41224.69155.48331.09134.95124.95121.09771.0977
H93.86643.23483.61584.94302.00804.15981.09135.48336.15481.78841.78845.81195.8119
H103.86643.23484.94303.61584.15982.00805.48331.09136.15485.81195.81191.78841.7884
H112.79292.67582.32583.81822.07923.87771.09774.95121.78845.81191.78935.28084.9685
H122.79292.67582.32583.81822.07923.87771.09774.95121.78845.81191.78934.96855.2808
H132.79292.67583.81822.32583.87772.07924.95121.09775.81191.78845.28084.96851.7893
H142.79292.67583.81822.32583.87772.07924.95121.09775.81191.78844.96855.28081.7893

picture of Ethene, 1,1-dimethoxy- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O5 126.900 C1 C2 O6 126.900
C2 C1 H3 121.391 C2 C1 H4 121.391
C2 O5 C7 116.947 C2 O6 C8 116.947
H3 C1 H4 117.218 O5 C2 O6 106.199
O5 C7 H9 105.948 O5 C7 H11 111.253
O5 C7 H12 111.253 O6 C8 H10 105.948
O6 C8 H13 111.253 O6 C8 H14 111.253
H9 C7 H11 109.572 H9 C7 H12 109.572
H10 C8 H13 109.572 H10 C8 H14 109.572
H11 C7 H12 109.186 H13 C8 H14 109.186
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 C -0.565     -0.830
2 C 0.639     0.658
3 H 0.166     0.235
4 H 0.166     0.235
5 O -0.465     -0.360
6 O -0.465     -0.360
7 C -0.281     0.023
8 C -0.281     0.023
9 H 0.193     0.094
10 H 0.193     0.094
11 H 0.175     0.047
12 H 0.175     0.048
13 H 0.175     0.048
14 H 0.175     0.047


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 1.167 1.167
CHELPG        
AIM        
ESP 0.012 0.000 1.200 1.201


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.833 0.000 0.000
y 0.000 -25.972 0.000
z 0.000 0.000 -38.678
Traceless
 xyz
x -5.508 0.000 0.000
y 0.000 12.283 0.000
z 0.000 0.000 -6.775
Polar
3z2-r2-13.551
x2-y2-11.861
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> 185.983
(<r2>)1/2 13.638