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All results from a given calculation for C4H10O2 (Ethane, 1,2-dimethoxy-)

using model chemistry: mPW1PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at mPW1PW91/6-31G**
 hartrees
Energy at 0K-308.785363
Energy at 298.15K-308.797029
Nuclear repulsion energy253.609939
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 mPW1PW91/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3163 3009 0.00      
2 Ag 3012 2866 0.00      
3 Ag 3001 2855 0.00      
4 Ag 1549 1474 0.00      
5 Ag 1522 1448 0.00      
6 Ag 1501 1428 0.00      
7 Ag 1462 1391 0.00      
8 Ag 1260 1199 0.00      
9 Ag 1208 1150 0.00      
10 Ag 1102 1049 0.00      
11 Ag 1051 1000 0.00      
12 Ag 404 384 0.00      
13 Ag 333 317 0.00      
14 Au 3063 2915 0.01      
15 Au 3059 2911 242.89      
16 Au 1502 1429 12.72      
17 Au 1250 1189 12.61      
18 Au 1189 1131 2.13      
19 Au 843 803 0.21      
20 Au 243 231 8.63      
21 Au 102 97 8.07      
22 Au 71 67 3.00      
23 Bg 3061 2913 0.00      
24 Bg 3036 2888 0.00      
25 Bg 1502 1429 0.00      
26 Bg 1306 1242 0.00      
27 Bg 1207 1149 0.00      
28 Bg 1166 1109 0.00      
29 Bg 227 216 0.00      
30 Bg 126 120 0.00      
31 Bu 3162 3009 60.50      
32 Bu 3014 2868 136.00      
33 Bu 3002 2856 82.74      
34 Bu 1555 1479 2.55      
35 Bu 1523 1449 25.41      
36 Bu 1492 1420 4.14      
37 Bu 1371 1305 31.45      
38 Bu 1247 1187 265.62      
39 Bu 1199 1141 124.60      
40 Bu 1005 956 62.30      
41 Bu 507 483 4.18      
42 Bu 144 137 4.05      

Unscaled Zero Point Vibrational Energy (zpe) 31370.7 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 29849.2 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 mPW1PW91/6-31G**
ABC
0.63617 0.04337 0.04189

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 1.338 1.183 0.000
O2 -1.338 -1.183 0.000
C3 -1.456 -2.580 0.000
C4 1.456 2.580 0.000
C5 0.000 0.757 0.000
C6 0.000 -0.757 0.000
H7 2.520 2.818 0.000
H8 -2.520 -2.818 0.000
H9 -0.992 -3.030 0.890
H10 -0.992 -3.030 -0.890
H11 0.992 3.030 0.890
H12 0.992 3.030 -0.890
H13 -0.538 1.126 0.887
H14 -0.538 1.126 -0.887
H15 0.538 -1.126 0.887
H16 0.538 -1.126 -0.887

Atom - Atom Distances (Å)
  O1 O2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
O13.57194.68671.40201.40422.35672.01825.55864.89584.89582.07922.07922.07572.07572.59942.5994
O23.57191.40204.68672.35671.40425.55862.01822.07922.07924.89584.89582.59942.59942.07572.0757
C34.68671.40205.92473.64072.33296.70471.09101.09991.09996.18506.18503.91943.91942.62222.6222
C41.40204.68675.92472.33293.64071.09106.70476.18506.18501.09991.09992.62222.62223.91943.9194
C51.40422.35673.64072.33291.51413.25604.37464.01464.01462.63482.63481.10081.10082.14962.1496
C62.35671.40422.33293.64071.51414.37463.25602.63482.63484.01464.01462.14962.14961.10081.1008
H72.01825.55866.70471.09103.25604.37467.56206.87996.87991.78111.78113.60623.60624.50274.5027
H85.55862.01821.09106.70474.37463.25607.56201.78111.78116.87996.87994.50274.50273.60623.6062
H94.89582.07921.09996.18504.01462.63486.87991.78111.78076.37626.62014.18024.54242.44263.0208
H104.89582.07921.09996.18504.01462.63486.87991.78111.78076.62016.37624.54244.18023.02082.4426
H112.07924.89586.18501.09992.63484.01461.78116.87996.37626.62011.78072.44263.02084.18024.5424
H122.07924.89586.18501.09992.63484.01461.78116.87996.62016.37621.78073.02082.44264.54244.1802
H132.07572.59943.91942.62221.10082.14963.60624.50274.18024.54242.44263.02081.77402.49513.0615
H142.07572.59943.91942.62221.10082.14963.60624.50274.54244.18023.02082.44261.77403.06152.4951
H152.59942.07572.62223.91942.14961.10084.50273.60622.44263.02084.18024.54242.49513.06151.7740
H162.59942.07572.62223.91942.14961.10084.50273.60623.02082.44264.54244.18023.06152.49511.7740

picture of Ethane, 1,2-dimethoxy- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C4 H7 107.447 O1 C4 H11 111.843
O1 C4 H12 111.843 O1 C5 C6 107.651
O1 C5 H13 111.342 O1 C5 H14 111.342
O2 C3 H8 107.447 O2 C3 H9 111.843
O2 C3 H10 111.843 O2 C6 C5 107.651
O2 C6 H15 111.342 O2 C6 H16 111.342
C3 O2 C6 112.471 C4 O1 C5 112.471
C5 C6 H15 109.566 C5 C6 H16 109.566
C6 C5 H13 109.566 C6 C5 H14 109.566
H7 C4 H11 108.774 H7 C4 H12 108.774
H8 C3 H9 108.774 H8 C3 H10 108.774
H9 C3 H10 108.082 H11 C4 H12 108.082
H13 C5 H14 107.366 H15 C6 H16 107.366
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.496      
2 O -0.496      
3 C -0.125      
4 C -0.125      
5 C 0.012      
6 C 0.012      
7 H 0.141      
8 H 0.141      
9 H 0.115      
10 H 0.115      
11 H 0.115      
12 H 0.115      
13 H 0.119      
14 H 0.119      
15 H 0.119      
16 H 0.119      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.183 2.187 0.000
y 2.187 -29.723 0.000
z 0.000 0.000 -37.834
Traceless
 xyz
x -6.404 2.187 0.000
y 2.187 9.286 0.000
z 0.000 0.000 -2.881
Polar
3z2-r2-5.762
x2-y2-10.460
xy2.187
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> 267.440
(<r2>)1/2 16.354