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

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-305.879067
Energy at 298.15K-305.890675
HF Energy-305.277227
Nuclear repulsion energy247.524551
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 MP2/3-21G
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 3175 3030 0.00      
2 Ag 3056 2917 0.00      
3 Ag 3040 2902 0.00      
4 Ag 1630 1556 0.00      
5 Ag 1613 1540 0.00      
6 Ag 1543 1473 0.00      
7 Ag 1471 1404 0.00      
8 Ag 1234 1177 0.00      
9 Ag 1113 1063 0.00      
10 Ag 1073 1024 0.00      
11 Ag 950 907 0.00      
12 Ag 381 364 0.00      
13 Ag 322 308 0.00      
14 Au 3113 2972 94.88      
15 Au 3089 2948 118.67      
16 Au 1590 1518 10.03      
17 Au 1249 1192 8.69      
18 Au 1189 1135 1.27      
19 Au 897 857 0.07      
20 Au 245 234 10.72      
21 Au 117 112 12.06      
22 Au 66 63 4.74      
23 Bg 3089 2948 0.00      
24 Bg 3087 2946 0.00      
25 Bg 1590 1518 0.00      
26 Bg 1360 1298 0.00      
27 Bg 1206 1151 0.00      
28 Bg 1172 1119 0.00      
29 Bg 233 222 0.00      
30 Bg 125 119 0.00      
31 Bu 3174 3030 54.02      
32 Bu 3061 2922 59.52      
33 Bu 3040 2901 76.86      
34 Bu 1639 1564 2.21      
35 Bu 1615 1542 18.06      
36 Bu 1538 1468 14.21      
37 Bu 1399 1335 32.51      
38 Bu 1213 1158 40.48      
39 Bu 1121 1070 194.17      
40 Bu 893 852 30.50      
41 Bu 486 464 7.55      
42 Bu 134 128 6.79      

Unscaled Zero Point Vibrational Energy (zpe) 31665.7 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 30224.9 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 MP2/3-21G
ABC
0.59651 0.04149 0.03997

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 1.415 1.151 0.000
O2 -1.415 -1.151 0.000
C3 -1.566 -2.610 0.000
C4 1.566 2.610 0.000
C5 0.000 0.764 0.000
C6 0.000 -0.764 0.000
H7 2.641 2.801 0.000
H8 -2.641 -2.801 0.000
H9 -1.113 -3.065 0.892
H10 -1.113 -3.065 -0.892
H11 1.113 3.065 0.892
H12 1.113 3.065 -0.892
H13 -0.525 1.133 0.891
H14 -0.525 1.133 -0.891
H15 0.525 -1.133 0.891
H16 0.525 -1.133 -0.891

Atom - Atom Distances (Å)
  O1 O2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
O13.64734.79881.46701.46682.38052.05575.66244.99564.99562.13332.13332.13482.13482.60792.6079
O23.64731.46704.79882.38051.46685.66242.05572.13332.13334.99564.99562.60792.60792.13482.1348
C34.79881.46706.08753.71952.42106.85381.09151.09901.09906.33856.33853.98593.98592.71072.7107
C41.46704.79886.08752.42103.71951.09156.85386.33856.33851.09901.09902.71072.71073.98593.9859
C51.46682.38053.71952.42101.52763.33524.43624.08574.08572.70722.70721.09811.09812.16052.1605
C62.38051.46682.42103.71951.52764.43623.33522.70722.70724.08574.08572.16052.16051.09811.0981
H72.05575.66246.85381.09153.33524.43627.69897.02087.02081.78891.78893.68753.68754.55474.5547
H85.66242.05571.09156.85384.43623.33527.69891.78891.78897.02087.02084.55474.55473.68753.6875
H94.99562.13331.09906.33854.08572.70727.02081.78891.78326.52166.76104.23914.59862.53273.0971
H104.99562.13331.09906.33854.08572.70727.02081.78891.78326.76106.52164.59864.23913.09712.5327
H112.13334.99566.33851.09902.70724.08571.78897.02086.52166.76101.78322.53273.09714.23914.5986
H122.13334.99566.33851.09902.70724.08571.78897.02086.76106.52161.78323.09712.53274.59864.2391
H132.13482.60793.98592.71071.09812.16053.68754.55474.23914.59862.53273.09711.78182.49783.0681
H142.13482.60793.98592.71071.09812.16053.68754.55474.59864.23913.09712.53271.78183.06812.4978
H152.60792.13482.71073.98592.16051.09814.55473.68752.53273.09714.23914.59862.49783.06811.7818
H162.60792.13482.71073.98592.16051.09814.55473.68753.09712.53274.59864.23913.06812.49781.7818

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 105.993 O1 C4 H11 111.677
O1 C4 H12 111.677 O1 C5 C6 105.293
O1 C5 H13 111.872 O1 C5 H14 111.872
O2 C3 H8 105.993 O2 C3 H9 111.677
O2 C3 H10 111.677 O2 C6 C5 105.293
O2 C6 H15 111.872 O2 C6 H16 111.872
C3 O2 C6 111.217 C4 O1 C5 111.217
C5 C6 H15 109.655 C5 C6 H16 109.655
C6 C5 H13 109.655 C6 C5 H14 109.655
H7 C4 H11 109.503 H7 C4 H12 109.503
H8 C3 H9 109.503 H8 C3 H10 109.503
H9 C3 H10 108.445 H11 C4 H12 108.445
H13 C5 H14 108.448 H15 C6 H16 108.448
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.507     -0.417
2 O -0.507     -0.415
3 C -0.268     0.018
4 C -0.268     0.010
5 C -0.109     0.157
6 C -0.109     0.128
7 H 0.195     0.084
8 H 0.195     0.082
9 H 0.165     0.048
10 H 0.165     0.048
11 H 0.165     0.049
12 H 0.165     0.049
13 H 0.180     0.036
14 H 0.180     0.036
15 H 0.180     0.042
16 H 0.180     0.042


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 -0.007 -0.007 0.000 0.009


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.705 2.836 0.000
y 2.836 -28.845 0.000
z 0.000 0.000 -39.015
Traceless
 xyz
x -7.775 2.836 0.000
y 2.836 11.515 0.000
z 0.000 0.000 -3.740
Polar
3z2-r2-7.480
x2-y2-12.860
xy2.836
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.162 1.420 0.000
y 1.420 8.181 0.000
z 0.000 0.000 6.006


<r2> (average value of r2) Å2
<r2> 278.544
(<r2>)1/2 16.690