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

using model chemistry: B3PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-308.765938
Energy at 298.15K-308.777537
Nuclear repulsion energy253.473962
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(2df,p)
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 3126 3006 0.00      
2 Ag 2979 2864 0.00      
3 Ag 2966 2852 0.00      
4 Ag 1525 1466 0.00      
5 Ag 1499 1441 0.00      
6 Ag 1480 1423 0.00      
7 Ag 1439 1384 0.00      
8 Ag 1246 1198 0.00      
9 Ag 1190 1144 0.00      
10 Ag 1087 1045 0.00      
11 Ag 1039 998 0.00      
12 Ag 399 384 0.00      
13 Ag 330 317 0.00      
14 Au 3027 2910 6.25      
15 Au 3022 2906 221.74      
16 Au 1479 1422 11.91      
17 Au 1234 1186 13.55      
18 Au 1179 1133 2.16      
19 Au 831 799 0.11      
20 Au 237 228 6.58      
21 Au 96 92 6.88      
22 Au 68 66 2.05      
23 Bg 3025 2908 0.00      
24 Bg 2996 2881 0.00      
25 Bg 1479 1422 0.00      
26 Bg 1288 1238 0.00      
27 Bg 1196 1150 0.00      
28 Bg 1154 1110 0.00      
29 Bg 223 214 0.00      
30 Bg 124 119 0.00      
31 Bu 3126 3006 58.08      
32 Bu 2981 2866 136.45      
33 Bu 2969 2854 77.55      
34 Bu 1532 1472 2.71      
35 Bu 1501 1443 22.73      
36 Bu 1473 1416 2.49      
37 Bu 1357 1305 31.00      
38 Bu 1229 1182 227.74      
39 Bu 1185 1139 158.88      
40 Bu 992 953 55.82      
41 Bu 502 483 3.38      
42 Bu 140 134 3.33      

Unscaled Zero Point Vibrational Energy (zpe) 30972.9 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 29777.4 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(2df,p)
ABC
0.63590 0.04331 0.04183

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 1.336 1.188 0.000
O2 -1.336 -1.188 0.000
C3 -1.451 -2.584 0.000
C4 1.451 2.584 0.000
C5 0.000 0.759 0.000
C6 0.000 -0.759 0.000
H7 2.517 2.827 0.000
H8 -2.517 -2.827 0.000
H9 -0.985 -3.034 0.891
H10 -0.985 -3.034 -0.891
H11 0.985 3.034 0.891
H12 0.985 3.034 -0.891
H13 -0.540 1.128 0.888
H14 -0.540 1.128 -0.888
H15 0.540 -1.128 0.888
H16 0.540 -1.128 -0.888

Atom - Atom Distances (Å)
  O1 O2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
O13.57484.68941.40111.40302.36052.02035.56394.89914.89912.08022.08022.07602.07602.60502.6050
O23.57481.40114.68942.36051.40305.56392.02032.08022.08024.89914.89912.60502.60502.07602.0760
C34.68941.40115.92693.64392.33176.70961.09311.10211.10216.18776.18773.92433.92432.62102.6210
C41.40114.68945.92692.33173.64391.09316.70966.18776.18771.10211.10212.62102.62103.92433.9243
C51.40302.36053.64392.33171.51723.25754.38064.01854.01852.63472.63471.10291.10292.15422.1542
C62.36051.40302.33173.64391.51724.38063.25752.63472.63474.01854.01852.15422.15421.10291.1029
H72.02035.56396.70961.09313.25754.38067.56966.88506.88501.78451.78453.60763.60764.51014.5101
H85.56392.02031.09316.70964.38063.25757.56961.78451.78456.88506.88504.51014.51013.60763.6076
H94.89912.08021.10216.18774.01852.63476.88501.78451.78296.37956.62404.18614.54862.44033.0201
H104.89912.08021.10216.18774.01852.63476.88501.78451.78296.62406.37954.54864.18613.02012.4403
H112.08024.89916.18771.10212.63474.01851.78456.88506.37956.62401.78292.44033.02014.18614.5486
H122.08024.89916.18771.10212.63474.01851.78456.88506.62406.37951.78293.02012.44034.54864.1861
H132.07602.60503.92432.62101.10292.15423.60764.51014.18614.54862.44033.02011.77572.50193.0680
H142.07602.60503.92432.62101.10292.15423.60764.51014.54864.18613.02012.44031.77573.06802.5019
H152.60502.07602.62103.92432.15421.10294.51013.60762.44033.02014.18614.54862.50193.06801.7757
H162.60502.07602.62103.92432.15421.10294.51013.60763.02012.44034.54864.18613.06802.50191.7757

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 107.552 O1 C4 H11 111.852
O1 C4 H12 111.852 O1 C5 C6 107.800
O1 C5 H13 111.313 O1 C5 H14 111.313
O2 C3 H8 107.552 O2 C3 H9 111.852
O2 C3 H10 111.852 O2 C6 C5 107.800
O2 C6 H15 111.313 O2 C6 H16 111.313
C3 O2 C6 112.512 C4 O1 C5 112.512
C5 C6 H15 109.594 C5 C6 H16 109.594
C6 C5 H13 109.594 C6 C5 H14 109.594
H7 C4 H11 108.765 H7 C4 H12 108.765
H8 C3 H9 108.765 H8 C3 H10 108.765
H9 C3 H10 107.978 H11 C4 H12 107.978
H13 C5 H14 107.220 H15 C6 H16 107.220
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.256      
2 O -0.256      
3 C -0.275      
4 C -0.275      
5 C -0.101      
6 C -0.101      
7 H 0.149      
8 H 0.149      
9 H 0.124      
10 H 0.124      
11 H 0.124      
12 H 0.124      
13 H 0.118      
14 H 0.118      
15 H 0.118      
16 H 0.118      


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 -39.867 1.912 0.000
y 1.912 -30.628 0.000
z 0.000 0.000 -37.571
Traceless
 xyz
x -5.768 1.912 0.000
y 1.912 8.091 0.000
z 0.000 0.000 -2.323
Polar
3z2-r2-4.647
x2-y2-9.239
xy1.912
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.920 1.402 0.000
y 1.402 9.395 0.000
z 0.000 0.000 7.026


<r2> (average value of r2) Å2
<r2> 267.842
(<r2>)1/2 16.366