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: HF/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-307.111296
Energy at 298.15K-307.123242
HF Energy-307.111296
Nuclear repulsion energy255.046326
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/Def2TZVPP
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 3250 2946 0.00      
2 Ag 3139 2845 0.00      
3 Ag 3125 2832 0.00      
4 Ag 1651 1496 0.00      
5 Ag 1629 1477 0.00      
6 Ag 1620 1468 0.00      
7 Ag 1582 1434 0.00      
8 Ag 1365 1237 0.00      
9 Ag 1285 1165 0.00      
10 Ag 1160 1052 0.00      
11 Ag 1114 1010 0.00      
12 Ag 425 385 0.00      
13 Ag 354 321 0.00      
14 Au 3181 2883 155.30      
15 Au 3170 2873 115.13      
16 Au 1615 1464 12.28      
17 Au 1355 1229 17.75      
18 Au 1284 1164 6.55      
19 Au 897 813 0.94      
20 Au 245 223 11.23      
21 Au 118 107 5.90      
22 Au 74 67 4.83      
23 Bg 3170 2873 0.00      
24 Bg 3151 2856 0.00      
25 Bg 1615 1464 0.00      
26 Bg 1415 1283 0.00      
27 Bg 1300 1178 0.00      
28 Bg 1257 1139 0.00      
29 Bg 224 203 0.00      
30 Bg 127 115 0.00      
31 Bu 3250 2946 93.89      
32 Bu 3140 2846 158.58      
33 Bu 3124 2832 83.16      
34 Bu 1658 1503 4.36      
35 Bu 1626 1474 18.48      
36 Bu 1608 1457 4.54      
37 Bu 1494 1354 44.85      
38 Bu 1349 1223 251.97      
39 Bu 1275 1155 289.83      
40 Bu 1058 959 71.68      
41 Bu 541 490 4.76      
42 Bu 160 145 3.86      

Unscaled Zero Point Vibrational Energy (zpe) 33090.0 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 29992.8 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/Def2TZVPP
ABC
0.66261 0.04341 0.04201

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.424 1.737 0.000
O2 -0.424 -1.737 0.000
C3 0.238 -2.965 0.000
C4 -0.238 2.965 0.000
C5 -0.424 0.626 0.000
C6 0.424 -0.626 0.000
H7 0.507 3.747 0.000
H8 -0.507 -3.747 0.000
H9 0.862 -3.068 0.882
H10 0.862 -3.068 -0.882
H11 -0.862 3.068 0.882
H12 -0.862 3.068 -0.882
H13 -1.062 0.641 0.878
H14 -1.062 0.641 -0.878
H15 1.062 -0.641 0.878
H16 1.062 -0.641 -0.878

Atom - Atom Distances (Å)
  O1 O2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
O13.57544.70521.39491.39692.36312.01155.56164.90454.90452.05002.05002.04442.04442.61392.6139
O23.57541.39494.70522.36311.39695.56162.01152.05002.05004.90454.90452.61392.61392.04442.0444
C34.70521.39495.94863.65162.34586.71671.07951.08541.08546.19526.19523.93243.93242.61722.6172
C41.39494.70525.94862.34583.65161.07956.71676.19526.19521.08541.08542.61722.61723.93243.9324
C51.39692.36313.65162.34581.51263.25594.37374.00984.00982.63272.63271.08561.08562.14152.1415
C62.36311.39692.34583.65161.51264.37373.25592.63272.63274.00984.00982.14152.14151.08561.0856
H72.01155.56166.71671.07953.25594.37377.56136.88046.88041.76391.76393.58833.58834.50904.5090
H85.56162.01151.07956.71674.37373.25597.56131.76391.76396.88046.88044.50904.50903.58833.5883
H94.90452.05001.08546.19524.00982.63276.88041.76391.76446.37326.61294.17844.53392.43503.0044
H104.90452.05001.08546.19524.00982.63276.88041.76391.76446.61296.37324.53394.17843.00442.4350
H112.05004.90456.19521.08542.63274.00981.76396.88046.37326.61291.76442.43503.00444.17844.5339
H122.05004.90456.19521.08542.63274.00981.76396.88046.61296.37321.76443.00442.43504.53394.1784
H132.04442.61393.93242.61721.08562.14153.58834.50904.17844.53392.43503.00441.75552.48193.0400
H142.04442.61393.93242.61721.08562.14153.58834.50904.53394.17843.00442.43501.75553.04002.4819
H152.61392.04442.61723.93242.14151.08564.50903.58832.43503.00444.17844.53392.48193.04001.7555
H162.61392.04442.61723.93242.14151.08564.50903.58833.00442.43504.53394.17843.04002.48191.7555

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 108.091 O1 C4 H11 110.868
O1 C4 H12 110.868 O1 C5 C6 108.560
O1 C5 H13 110.253 O1 C5 H14 110.253
O2 C3 H8 108.091 O2 C3 H9 110.868
O2 C3 H10 110.868 O2 C6 C5 108.560
O2 C6 H15 110.253 O2 C6 H16 110.253
C3 O2 C6 114.334 C4 O1 C5 114.334
C5 C6 H15 109.934 C5 C6 H16 109.934
C6 C5 H13 109.934 C6 C5 H14 109.934
H7 C4 H11 109.125 H7 C4 H12 109.125
H8 C3 H9 109.125 H8 C3 H10 109.125
H9 C3 H10 108.732 H11 C4 H12 108.732
H13 C5 H14 107.904 H15 C6 H16 107.904
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.403      
2 O -0.403      
3 C 0.017      
4 C 0.017      
5 C 0.152      
6 C 0.152      
7 H 0.074      
8 H 0.074      
9 H 0.048      
10 H 0.048      
11 H 0.048      
12 H 0.048      
13 H 0.032      
14 H 0.032      
15 H 0.032      
16 H 0.032      


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 -39.693 -4.138 0.000
y -4.138 -32.087 0.000
z 0.000 0.000 -38.014
Traceless
 xyz
x -4.642 -4.138 0.000
y -4.138 6.766 0.000
z 0.000 0.000 -2.124
Polar
3z2-r2-4.248
x2-y2-7.605
xy-4.138
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.406 -0.130 0.000
y -0.130 10.050 0.000
z 0.000 0.000 7.258


<r2> (average value of r2) Å2
<r2> 266.983
(<r2>)1/2 16.340