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

using model chemistry: QCISD/3-21G

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/3-21G
 hartrees
Energy at 0K-228.100648
Energy at 298.15K-228.107827
HF Energy-227.648965
Nuclear repulsion energy127.917065
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/3-21G
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 3491 3383 0.00      
2 Ag 3013 2921 0.00      
3 Ag 1607 1558 0.00      
4 Ag 1507 1460 0.00      
5 Ag 1320 1279 0.00      
6 Ag 1030 999 0.00      
7 Ag 980 950 0.00      
8 Ag 460 446 0.00      
9 Au 3064 2969 111.52      
10 Au 1227 1189 1.89      
11 Au 884 856 3.93      
12 Au 279 270 313.09      
13 Au 133 129 9.39      
14 Bg 3036 2943 0.00      
15 Bg 1353 1312 0.00      
16 Bg 1166 1130 0.00      
17 Bg 276 268 0.00      
18 Bu 3492 3385 1.05      
19 Bu 3019 2926 66.94      
20 Bu 1620 1570 5.27      
21 Bu 1452 1407 5.25      
22 Bu 1224 1187 113.44      
23 Bu 1017 985 122.98      
24 Bu 270 262 28.93      

Unscaled Zero Point Vibrational Energy (zpe) 18459.8 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 17891.3 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/3-21G
ABC
0.96458 0.13029 0.12005

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G

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 1.423 -1.143 0.000
O4 -1.423 1.143 0.000
H5 1.475 -2.134 0.000
H6 -1.475 2.134 0.000
H7 -0.536 -1.121 0.894
H8 -0.536 -1.121 -0.894
H9 0.536 1.121 0.894
H10 0.536 1.121 -0.894

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9 H10
C11.53172.38091.47203.25352.01192.15502.15501.10071.1007
C21.53171.47202.38092.01193.25351.10071.10072.15502.1550
O32.38091.47203.65030.99244.37472.15312.15312.59022.5902
O41.47202.38093.65034.37470.99242.59022.59022.15312.1531
H53.25352.01190.99244.37475.18852.42272.42273.50333.5033
H62.01193.25354.37470.99245.18853.50333.50332.42272.4227
H72.15501.10072.15312.59022.42273.50331.78712.48423.0602
H82.15501.10072.15312.59022.42273.50331.78713.06022.4842
H91.10072.15502.59022.15313.50332.42272.48423.06021.7871
H101.10072.15502.59022.15313.50332.42273.06022.48421.7871

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 104.853 C1 C2 H7 108.800
C1 C2 H8 108.800 C1 O4 H6 107.857
C2 C1 O4 104.853 C2 C1 H9 108.800
C2 C1 H10 108.800 C2 O3 H5 107.857
O3 C2 H7 112.834 O3 C2 H8 112.834
O4 C1 H9 112.834 O4 C1 H10 112.834
H7 C2 H8 108.547 H9 C1 H10 108.547
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability