return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-308.464257
Energy at 298.15K-308.475797
Nuclear repulsion energy251.462038
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 PBEPBEultrafine/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 Ag 3070 3020 0.00      
2 Ag 2914 2866 0.00      
3 Ag 2899 2851 0.00      
4 Ag 1510 1485 0.00      
5 Ag 1484 1460 0.00      
6 Ag 1456 1432 0.00      
7 Ag 1412 1388 0.00      
8 Ag 1210 1190 0.00      
9 Ag 1147 1128 0.00      
10 Ag 1064 1046 0.00      
11 Ag 1003 987 0.00      
12 Ag 390 384 0.00      
13 Ag 326 321 0.00      
14 Au 2955 2906 11.71      
15 Au 2949 2901 255.91      
16 Au 1462 1438 11.64      
17 Au 1206 1186 10.42      
18 Au 1150 1131 1.41      
19 Au 821 808 0.16      
20 Au 248 244 7.10      
21 Au 98 96 6.68      
22 Au 71 70 2.95      
23 Bg 2953 2904 0.00      
24 Bg 2924 2876 0.00      
25 Bg 1462 1438 0.00      
26 Bg 1263 1242 0.00      
27 Bg 1169 1149 0.00      
28 Bg 1128 1109 0.00      
29 Bg 235 231 0.00      
30 Bg 128 126 0.00      
31 Bu 3070 3020 60.89      
32 Bu 2915 2867 160.44      
33 Bu 2902 2854 80.52      
34 Bu 1517 1492 1.35      
35 Bu 1486 1462 25.83      
36 Bu 1450 1426 5.57      
37 Bu 1328 1306 29.19      
38 Bu 1188 1168 133.03      
39 Bu 1149 1130 228.95      
40 Bu 957 941 57.47      
41 Bu 495 487 3.49      
42 Bu 143 141 3.44      

Unscaled Zero Point Vibrational Energy (zpe) 30352.8 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 29851.9 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 PBEPBEultrafine/6-31G*
ABC
0.61867 0.04279 0.04129

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.434 1.748 0.000
O2 -0.434 -1.748 0.000
C3 0.285 -2.968 0.000
C4 -0.285 2.968 0.000
C5 -0.434 0.627 0.000
C6 0.434 -0.627 0.000
H7 0.458 3.781 0.000
H8 -0.458 -3.781 0.000
H9 0.930 -3.069 0.899
H10 0.930 -3.069 -0.899
H11 -0.930 3.069 0.899
H12 -0.930 3.069 -0.899
H13 -1.093 0.625 0.896
H14 -1.093 0.625 -0.896
H15 1.093 -0.625 0.896
H16 1.093 -0.625 -0.896

Atom - Atom Distances (Å)
  O1 O2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
O13.60324.71881.41581.41852.37522.03285.60114.92574.92572.10112.10112.09702.09702.62162.6216
O23.60321.41584.71882.37521.41855.60112.03282.10112.10114.92574.92572.62162.62162.09702.0970
C34.71881.41585.96323.66592.34596.75131.10151.11161.11166.22336.22333.95163.95162.63512.6351
C41.41584.71885.96322.34593.66591.10156.75136.22336.22331.11161.11162.63512.63513.95163.9516
C51.41852.37523.66592.34591.52483.27814.40804.04094.04092.64942.64941.11241.11242.16892.1689
C62.37521.41852.34593.66591.52484.40803.27812.64942.64944.04094.04092.16892.16891.11241.1124
H72.03285.60116.75131.10153.27814.40807.61756.92506.92501.80101.80103.62873.62874.54154.5415
H85.60112.03281.10156.75134.40803.27817.61751.80101.80106.92506.92504.54154.54153.62873.6287
H94.92572.10111.11166.22334.04092.64946.92501.80101.79906.41376.66124.21234.57902.44893.0366
H104.92572.10111.11166.22334.04092.64946.92501.80101.79906.66126.41374.57904.21233.03662.4489
H112.10114.92576.22331.11162.64944.04091.80106.92506.41376.66121.79902.44893.03664.21234.5790
H122.10114.92576.22331.11162.64944.04091.80106.92506.66126.41371.79903.03662.44894.57904.2123
H132.09702.62163.95162.63511.11242.16893.62874.54154.21234.57902.44893.03661.79202.51923.0916
H142.09702.62163.95162.63511.11242.16893.62874.54154.57904.21233.03662.44891.79203.09162.5192
H152.62162.09702.63513.95162.16891.11244.54153.62872.44893.03664.21234.57902.51923.09161.7920
H162.62162.09702.63513.95162.16891.11244.54153.62873.03662.44894.57904.21233.09162.51921.7920

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 107.054 O1 C4 H11 111.910
O1 C4 H12 111.910 O1 C5 C6 107.551
O1 C5 H13 111.329 O1 C5 H14 111.329
O2 C3 H8 107.054 O2 C3 H9 111.910
O2 C3 H10 111.910 O2 C6 C5 107.551
O2 C6 H15 111.329 O2 C6 H16 111.329
C3 O2 C6 111.724 C4 O1 C5 111.724
C5 C6 H15 109.661 C5 C6 H16 109.661
C6 C5 H13 109.661 C6 C5 H14 109.661
H7 C4 H11 108.934 H7 C4 H12 108.934
H8 C3 H9 108.934 H8 C3 H10 108.934
H9 C3 H10 108.032 H11 C4 H12 108.032
H13 C5 H14 107.307 H15 C6 H16 107.307
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.418      
2 O -0.418      
3 C -0.247      
4 C -0.247      
5 C -0.074      
6 C -0.074      
7 H 0.170      
8 H 0.170      
9 H 0.142      
10 H 0.142      
11 H 0.142      
12 H 0.142      
13 H 0.142      
14 H 0.142      
15 H 0.142      
16 H 0.142      


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 -39.113 -3.800 0.000
y -3.800 -31.659 0.000
z 0.000 0.000 -38.198
Traceless
 xyz
x -4.184 -3.800 0.000
y -3.800 6.996 0.000
z 0.000 0.000 -2.812
Polar
3z2-r2-5.624
x2-y2-7.454
xy-3.800
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.991 -0.194 0.000
y -0.194 10.208 0.000
z 0.000 0.000 6.898


<r2> (average value of r2) Å2
<r2> 271.216
(<r2>)1/2 16.469