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

using model chemistry: MP2/CEP-121G*

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-121G*
 hartrees
Energy at 0K-46.477207
Energy at 298.15K-46.484248
HF Energy-45.845115
Nuclear repulsion energy76.114585
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-121G*
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 3804 3624 0.00      
2 Ag 3063 2919 0.00      
3 Ag 1562 1488 0.00      
4 Ag 1512 1441 0.00      
5 Ag 1306 1244 0.00      
6 Ag 1091 1039 0.00      
7 Ag 1007 959 0.00      
8 Ag 475 453 0.00      
9 Au 3142 2994 97.58      
10 Au 1228 1170 1.78      
11 Au 843 804 4.03      
12 Au 235 224 257.99      
13 Au 113 108 54.17      
14 Bg 3117 2970 0.00      
15 Bg 1314 1252 0.00      
16 Bg 1171 1116 0.00      
17 Bg 215 205 0.00      
18 Bu 3805 3625 56.10      
19 Bu 3066 2922 106.87      
20 Bu 1569 1495 6.44      
21 Bu 1415 1348 6.08      
22 Bu 1199 1142 136.94      
23 Bu 1072 1021 188.72      
24 Bu 293 279 25.83      

Unscaled Zero Point Vibrational Energy (zpe) 18808.0 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 17920.3 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 MP2/CEP-121G*
ABC
0.99497 0.13212 0.12209

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.762 0.000
C2 0.000 -0.762 0.000
O3 1.386 -1.163 0.000
O4 -1.386 1.163 0.000
H5 1.407 -2.135 0.000
H6 -1.407 2.135 0.000
H7 -0.522 -1.125 0.895
H8 -0.522 -1.125 -0.895
H9 0.522 1.125 0.895
H10 0.522 1.125 -0.895

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9 H10
C11.52442.37251.44313.22071.96582.15262.15261.09791.0979
C21.52441.44312.37251.96583.22071.09791.09792.15262.1526
O32.37251.44313.61930.97184.32212.10852.10852.60412.6041
O41.44312.37253.61934.32210.97182.60412.60412.10852.1085
H53.22071.96580.97184.32215.11382.35492.35493.49393.4939
H61.96583.22074.32210.97185.11383.49393.49392.35492.3549
H72.15261.09792.10852.60412.35493.49391.79032.47983.0585
H82.15261.09792.10852.60412.35493.49391.79033.05852.4798
H91.09792.15262.60412.10853.49392.35492.47983.05851.7903
H101.09792.15262.60412.10853.49392.35493.05852.47981.7903

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 106.131 C1 C2 H7 109.269
C1 C2 H8 109.269 C1 O4 H6 107.375
C2 C1 O4 106.131 C2 C1 H9 109.269
C2 C1 H10 109.269 C2 O3 H5 107.375
O3 C2 H7 111.428 O3 C2 H8 111.428
O4 C1 H9 111.428 O4 C1 H10 111.428
H7 C2 H8 109.241 H9 C1 H10 109.241
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability