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

using model chemistry: HF/CEP-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 HF/CEP-31G*
 hartrees
Energy at 0K-59.133071
Energy at 298.15K-59.145004
Nuclear repulsion energy146.111708
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 HF/CEP-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 3317 2978 0.00      
2 Ag 3215 2887 0.00      
3 Ag 3190 2865 0.00      
4 Ag 1658 1489 0.00      
5 Ag 1642 1475 0.00      
6 Ag 1628 1462 0.00      
7 Ag 1593 1431 0.00      
8 Ag 1365 1226 0.00      
9 Ag 1289 1158 0.00      
10 Ag 1167 1048 0.00      
11 Ag 1118 1004 0.00      
12 Ag 421 378 0.00      
13 Ag 356 319 0.00      
14 Au 3268 2934 215.32      
15 Au 3243 2912 181.12      
16 Au 1626 1460 8.98      
17 Au 1356 1218 20.84      
18 Au 1285 1154 7.32      
19 Au 884 793 1.42      
20 Au 254 228 13.08      
21 Au 120 108 9.76      
22 Au 75 67 5.88      
23 Bg 3243 2913 0.00      
24 Bg 3239 2908 0.00      
25 Bg 1626 1460 0.00      
26 Bg 1415 1270 0.00      
27 Bg 1296 1164 0.00      
28 Bg 1248 1121 0.00      
29 Bg 234 211 0.00      
30 Bg 130 117 0.00      
31 Bu 3317 2978 150.92      
32 Bu 3214 2886 191.09      
33 Bu 3189 2863 144.84      
34 Bu 1664 1494 3.26      
35 Bu 1635 1469 18.81      
36 Bu 1613 1448 17.27      
37 Bu 1489 1337 68.52      
38 Bu 1347 1210 287.43      
39 Bu 1278 1147 267.00      
40 Bu 1064 955 83.34      
41 Bu 539 484 4.45      
42 Bu 157 141 5.17      

Unscaled Zero Point Vibrational Energy (zpe) 33502.3 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 30085.1 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 HF/CEP-31G*
ABC
0.64377 0.04294 0.04151

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 1.338 1.193 0.000
O2 -1.338 -1.193 0.000
C3 -1.474 -2.588 0.000
C4 1.474 2.588 0.000
C5 0.000 0.764 0.000
C6 0.000 -0.764 0.000
H7 2.537 2.816 0.000
H8 -2.537 -2.816 0.000
H9 -1.013 -3.031 0.889
H10 -1.013 -3.031 -0.889
H11 1.013 3.031 0.889
H12 1.013 3.031 -0.889
H13 -0.526 1.134 0.885
H14 -0.526 1.134 -0.885
H15 0.526 -1.134 0.885
H16 0.526 -1.134 -0.885

Atom - Atom Distances (Å)
  O1 O2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
O13.58574.71201.40161.40552.37052.01755.57574.91514.91512.06762.06762.06482.06482.61822.6182
O23.58571.40164.71202.37051.40555.57572.01752.06762.06764.91514.91512.61822.61822.06482.0648
C34.71201.40165.95633.66132.34526.72951.08731.09521.09526.20846.20843.94083.94082.62642.6264
C41.40164.71205.95632.34523.66131.08736.72956.20846.20841.09521.09522.62642.62643.94083.9408
C51.40552.37053.66132.34521.52733.26304.38734.02684.02682.63752.63751.09391.09392.15852.1585
C62.37051.40552.34523.66131.52734.38733.26302.63752.63754.02684.02682.15852.15851.09391.0939
H72.01755.57576.72951.08733.26304.38737.58026.89746.89741.77771.77773.60503.60504.51924.5192
H85.57572.01751.08736.72954.38733.26307.58021.77771.77776.89746.89744.51924.51923.60503.6050
H94.91512.06761.09526.20844.02682.63756.89741.77771.77856.39126.63404.19274.55262.44303.0192
H104.91512.06761.09526.20844.02682.63756.89741.77771.77856.63406.39124.55264.19273.01922.4430
H112.06764.91516.20841.09522.63754.02681.77776.89746.39126.63401.77852.44303.01924.19274.5526
H122.06764.91516.20841.09522.63754.02681.77776.89746.63406.39121.77853.01922.44304.55264.1927
H132.06482.61823.94082.62641.09392.15853.60504.51924.19274.55262.44303.01921.76982.49943.0625
H142.06482.61823.94082.62641.09392.15853.60504.51924.55264.19273.01922.44301.76983.06252.4994
H152.61822.06482.62643.94082.15851.09394.51923.60502.44303.01924.19274.55262.49943.06251.7698
H162.61822.06482.62643.94082.15851.09394.51923.60503.01922.44304.55264.19273.06252.49941.7698

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 107.637 O1 C4 H11 111.215
O1 C4 H12 111.215 O1 C5 C6 107.781
O1 C5 H13 110.781 O1 C5 H14 110.781
O2 C3 H8 107.637 O2 C3 H9 111.215
O2 C3 H10 111.215 O2 C6 C5 107.781
O2 C6 H15 110.781 O2 C6 H16 110.781
C3 O2 C6 113.321 C4 O1 C5 113.321
C5 C6 H15 109.760 C5 C6 H16 109.760
C6 C5 H13 109.760 C6 C5 H14 109.760
H7 C4 H11 109.078 H7 C4 H12 109.078
H8 C3 H9 109.078 H8 C3 H10 109.078
H9 C3 H10 108.574 H11 C4 H12 108.574
H13 C5 H14 107.977 H15 C6 H16 107.977
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.348      
2 O -0.348      
3 C -0.216      
4 C -0.216      
5 C -0.021      
6 C -0.021      
7 H 0.178      
8 H 0.178      
9 H 0.112      
10 H 0.112      
11 H 0.112      
12 H 0.112      
13 H 0.092      
14 H 0.092      
15 H 0.092      
16 H 0.092      


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 -41.569 1.928 0.000
y 1.928 -28.950 0.000
z 0.000 0.000 -37.553
Traceless
 xyz
x -8.317 1.928 0.000
y 1.928 10.611 0.000
z 0.000 0.000 -2.294
Polar
3z2-r2-4.587
x2-y2-12.619
xy1.928
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.725 1.087 0.000
y 1.087 7.691 0.000
z 0.000 0.000 5.982


<r2> (average value of r2) Å2
<r2> 218.811
(<r2>)1/2 14.792