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

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-229.728181
Energy at 298.15K-229.735342
HF Energy-228.955168
Nuclear repulsion energy130.885680
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 MP2/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Ag 3901 3685 0.00      
2 Ag 3070 2899 0.00      
3 Ag 1557 1471 0.00      
4 Ag 1514 1430 0.00      
5 Ag 1310 1237 0.00      
6 Ag 1125 1063 0.00      
7 Ag 1020 964 0.00      
8 Ag 487 460 0.00      
9 Au 3139 2964 78.81      
10 Au 1246 1176 2.18      
11 Au 843 796 2.43      
12 Au 253 239 223.03      
13 Au 128 121 26.83      
14 Bg 3113 2940 0.00      
15 Bg 1322 1249 0.00      
16 Bg 1185 1119 0.00      
17 Bg 247 233 0.00      
18 Bu 3902 3686 81.19      
19 Bu 3076 2905 78.99      
20 Bu 1567 1481 5.48      
21 Bu 1433 1354 13.39      
22 Bu 1212 1144 78.73      
23 Bu 1112 1051 203.96      
24 Bu 287 271 19.54      

Unscaled Zero Point Vibrational Energy (zpe) 19023.1 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 17967.3 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 MP2/6-31G(2df,p)
ABC
1.01536 0.13551 0.12518

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

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 1.357 -1.159 0.000
O4 -1.357 1.159 0.000
H5 1.373 -2.118 0.000
H6 -1.373 2.118 0.000
H7 -0.538 -1.112 0.887
H8 -0.538 -1.112 -0.887
H9 0.538 1.112 0.887
H10 0.538 1.112 -0.887

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9 H10
C11.51352.34811.41573.18621.93392.13692.13691.09611.0961
C21.51351.41572.34811.93393.18621.09611.09612.13692.1369
O32.34811.41573.56990.95914.26602.09292.09292.57192.5719
O41.41572.34813.56994.26600.95912.57192.57192.09292.0929
H53.18621.93390.95914.26605.04912.33512.33513.45203.4520
H61.93393.18624.26600.95915.04913.45203.45202.33512.3351
H72.13691.09612.09292.57192.33513.45201.77332.46983.0405
H82.13691.09612.09292.57192.33513.45201.77333.04052.4698
H91.09612.13692.57192.09293.45202.33512.46983.04051.7733
H101.09612.13692.57192.09293.45202.33513.04052.46981.7733

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 106.518 C1 C2 H7 108.888
C1 C2 H8 108.888 C1 O4 H6 107.485
C2 C1 O4 106.518 C2 C1 H9 108.888
C2 C1 H10 108.888 C2 O3 H5 107.485
O3 C2 H7 112.238 O3 C2 H8 112.238
O4 C1 H9 112.238 O4 C1 H10 112.238
H7 C2 H8 107.984 H9 C1 H10 107.984
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability