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All results from a given calculation for C2H6O2 (1,2-Ethanediol)

using model chemistry: QCISD/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at QCISD/6-311G*
 hartrees
Energy at 0K-229.676184
Energy at 298.15K-229.683330
HF Energy-228.976962
Nuclear repulsion energy130.455281
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 QCISD/6-311G*
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 3867 3702 0.00      
2 Ag 3019 2890 0.00      
3 Ag 1560 1494 0.00      
4 Ag 1537 1471 0.00      
5 Ag 1332 1275 0.00      
6 Ag 1126 1078 0.00      
7 Ag 1023 980 0.00      
8 Ag 490 469 0.00      
9 Au 3076 2945 112.65      
10 Au 1253 1200 2.90      
11 Au 848 812 4.41      
12 Au 243 232 281.81      
13 Au 130 125 40.58      
14 Bg 3049 2919 0.00      
15 Bg 1329 1272 0.00      
16 Bg 1184 1133 0.00      
17 Bg 226 216 0.00      
18 Bu 3868 3703 29.89      
19 Bu 3022 2893 106.88      
20 Bu 1569 1502 5.19      
21 Bu 1448 1386 11.42      
22 Bu 1226 1174 150.25      
23 Bu 1113 1066 171.67      
24 Bu 301 288 25.37      

Unscaled Zero Point Vibrational Energy (zpe) 18918.6 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 18112.6 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 QCISD/6-311G*
ABC
1.01625 0.13418 0.12413

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.757 0.000
C2 0.000 -0.757 0.000
O3 1.360 -1.169 0.000
O4 -1.360 1.169 0.000
H5 1.386 -2.127 0.000
H6 -1.386 2.127 0.000
H7 -0.535 -1.115 0.892
H8 -0.535 -1.115 -0.892
H9 0.535 1.115 0.892
H10 0.535 1.115 -0.892

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9 H10
C11.51482.35811.42073.20021.94852.14242.14241.10021.1002
C21.51481.42072.35811.94853.20021.10021.10022.14242.1424
O32.35811.42073.58660.95834.29002.09472.09472.58782.5878
O41.42072.35813.58664.29000.95832.58782.58782.09472.0947
H53.20021.94850.95834.29005.07762.34692.34693.46933.4693
H61.94853.20024.29000.95835.07763.46933.46932.34692.3469
H72.14241.10022.09472.58782.34693.46931.78482.47403.0506
H82.14241.10022.09472.58782.34693.46931.78483.05062.4740
H91.10022.14242.58782.09473.46932.34692.47403.05061.7848
H101.10022.14242.58782.09473.46932.34693.05062.47401.7848

picture of 1,2-Ethanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 106.854 C1 C2 H7 108.993
C1 C2 H8 108.993 C1 O4 H6 108.412
C2 C1 O4 106.854 C2 C1 H9 108.993
C2 C1 H10 108.993 C2 O3 H5 108.412
O3 C2 H7 111.762 O3 C2 H8 111.762
O4 C1 H9 111.762 O4 C1 H10 111.762
H7 C2 H8 108.408 H9 C1 H10 108.408
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability