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

using model chemistry: MP2/CEP-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 MP2/CEP-31G*
 hartrees
Energy at 0K-46.427397
Energy at 298.15K-46.434558
HF Energy-45.835353
Nuclear repulsion energy75.852444
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/CEP-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 3811 3618 0.00      
2 Ag 3084 2928 0.00      
3 Ag 1556 1477 0.00      
4 Ag 1513 1437 0.00      
5 Ag 1315 1248 0.00      
6 Ag 1096 1040 0.00      
7 Ag 1014 963 0.00      
8 Ag 475 451 0.00      
9 Au 3164 3003 116.61      
10 Au 1233 1171 2.61      
11 Au 849 807 2.24      
12 Au 277 263 294.25      
13 Au 121 115 37.16      
14 Bg 3138 2980 0.00      
15 Bg 1323 1256 0.00      
16 Bg 1166 1107 0.00      
17 Bg 265 252 0.00      
18 Bu 3812 3619 60.60      
19 Bu 3085 2929 121.82      
20 Bu 1558 1479 6.66      
21 Bu 1415 1344 9.36      
22 Bu 1207 1146 136.83      
23 Bu 1077 1022 186.01      
24 Bu 289 274 26.34      

Unscaled Zero Point Vibrational Energy (zpe) 18921.3 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 17963.9 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/CEP-31G*
ABC
0.98262 0.13166 0.12159

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.766 0.000
C2 0.000 -0.766 0.000
O3 1.389 -1.164 0.000
O4 -1.389 1.164 0.000
H5 1.412 -2.139 0.000
H6 -1.412 2.139 0.000
H7 -0.526 -1.133 0.902
H8 -0.526 -1.133 -0.902
H9 0.526 1.133 0.902
H10 0.526 1.133 -0.902

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9 H10
C11.53172.37741.44483.23031.97002.16692.16691.10681.1068
C21.53171.44482.37741.97003.23031.10681.10682.16692.1669
O32.37741.44483.62390.97614.33082.11712.11712.61382.6138
O41.44482.37743.62394.33080.97612.61382.61382.11712.1171
H53.23031.97000.97614.33085.12692.36292.36293.50813.5081
H61.97003.23034.33080.97615.12693.50813.50812.36292.3629
H72.16691.10682.11712.61382.36293.50811.80372.49843.0814
H82.16691.10682.11712.61382.36293.50811.80373.08142.4984
H91.10682.16692.61382.11713.50812.36292.49843.08141.8037
H101.10682.16692.61382.11713.50812.36293.08142.49841.8037

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 105.981 C1 C2 H7 109.372
C1 C2 H8 109.372 C1 O4 H6 107.341
C2 C1 O4 105.981 C2 C1 H9 109.372
C2 C1 H10 109.372 C2 O3 H5 107.341
O3 C2 H7 111.453 O3 C2 H8 111.453
O4 C1 H9 111.453 O4 C1 H10 111.453
H7 C2 H8 109.141 H9 C1 H10 109.141
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability