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

using model chemistry: CISD/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 CISD/6-31G*
 hartrees
Energy at 0K-229.484172
Energy at 298.15K-229.491454
HF Energy-228.921625
Nuclear repulsion energy130.946515
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 CISD/6-31G*
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 3943 3650 0.00      
2 Ag 3135 2902 0.00      
3 Ag 1624 1504 0.00      
4 Ag 1585 1467 0.00      
5 Ag 1364 1263 0.00      
6 Ag 1168 1081 0.00      
7 Ag 1051 973 0.00      
8 Ag 502 465 0.00      
9 Au 3192 2956 116.23      
10 Au 1296 1200 3.87      
11 Au 874 809 4.27      
12 Au 264 244 289.75      
13 Au 143 132 26.78      
14 Bg 3166 2932 0.00      
15 Bg 1374 1272 0.00      
16 Bg 1230 1139 0.00      
17 Bg 259 239 0.00      
18 Bu 3942 3649 74.60      
19 Bu 3137 2904 96.15      
20 Bu 1633 1512 7.29      
21 Bu 1489 1379 15.45      
22 Bu 1252 1159 150.53      
23 Bu 1158 1072 194.02      
24 Bu 309 286 24.76      

Unscaled Zero Point Vibrational Energy (zpe) 19545.1 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 18094.8 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 CISD/6-31G*
ABC
1.02376 0.13529 0.12510

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.755 0.000
C2 0.000 -0.755 0.000
O3 1.355 -1.163 0.000
O4 -1.355 1.163 0.000
H5 1.386 -2.123 0.000
H6 -1.386 2.123 0.000
H7 -0.532 -1.114 0.885
H8 -0.532 -1.114 -0.885
H9 0.532 1.114 0.885
H10 0.532 1.114 -0.885

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9 H10
C11.51022.34831.41483.19401.94702.13512.13511.09281.0928
C21.51021.41482.34831.94703.19401.09281.09282.13512.1351
O32.34831.41483.57090.96014.27862.08412.08412.57772.5777
O41.41482.34833.57094.27860.96012.57772.57772.08412.0841
H53.19401.94700.96014.27865.07002.34042.34043.46233.4623
H61.94703.19404.27860.96015.07003.46233.46232.34042.3404
H72.13511.09282.08412.57772.34043.46231.76972.46843.0373
H82.13511.09282.08412.57772.34043.46231.76973.03732.4684
H91.09282.13512.57772.08413.46232.34042.46843.03731.7697
H101.09282.13512.57772.08413.46232.34043.03732.46841.7697

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 106.758 C1 C2 H7 109.166
C1 C2 H8 109.166 C1 O4 H6 108.622
C2 C1 O4 106.758 C2 C1 H9 109.166
C2 C1 H10 109.166 C2 O3 H5 108.622
O3 C2 H7 111.786 O3 C2 H8 111.786
O4 C1 H9 111.786 O4 C1 H10 111.786
H7 C2 H8 108.128 H9 C1 H10 108.128
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability