return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B3LYP/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at B3LYP/6-311G*
 hartrees
Energy at 0K-230.300158
Energy at 298.15K-230.307331
Nuclear repulsion energy130.269647
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 B3LYP/6-311G*
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 3807 3679 0.00      
2 Ag 2992 2891 0.00      
3 Ag 1539 1487 0.00      
4 Ag 1505 1454 0.00      
5 Ag 1307 1263 0.00      
6 Ag 1081 1044 0.00      
7 Ag 995 961 0.00      
8 Ag 481 464 0.00      
9 Au 3044 2941 136.21      
10 Au 1235 1194 1.68      
11 Au 847 818 3.50      
12 Au 266 257 289.58      
13 Au 129 125 21.91      
14 Bg 3013 2912 0.00      
15 Bg 1317 1273 0.00      
16 Bg 1167 1128 0.00      
17 Bg 254 246 0.00      
18 Bu 3808 3680 27.65      
19 Bu 2997 2896 130.84      
20 Bu 1550 1498 5.07      
21 Bu 1429 1381 7.62      
22 Bu 1207 1166 126.01      
23 Bu 1070 1033 209.37      
24 Bu 295 285 23.50      

Unscaled Zero Point Vibrational Energy (zpe) 18666.5 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 18037.4 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 B3LYP/6-311G*
ABC
1.01851 0.13356 0.12359

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311G*

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 1.361 -1.175 0.000
O4 -1.361 1.175 0.000
H5 1.386 -2.136 0.000
H6 -1.386 2.136 0.000
H7 -0.536 -1.115 0.889
H8 -0.536 -1.115 -0.889
H9 0.536 1.115 0.889
H10 0.536 1.115 -0.889

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9 H10
C11.51482.36321.42343.20861.95512.14142.14141.09821.0982
C21.51481.42342.36321.95513.20861.09821.09822.14142.1414
O32.36321.42343.59540.96214.30202.09592.09592.59132.5913
O41.42342.36323.59544.30200.96212.59132.59132.09592.0959
H53.20861.95510.96214.30205.09312.35092.35093.47673.4767
H61.95513.20864.30200.96215.09313.47673.47672.35092.3509
H72.14141.09822.09592.59132.35093.47671.77802.47533.0477
H82.14141.09822.09592.59132.35093.47671.77803.04772.4753
H91.09822.14142.59132.09593.47672.35092.47533.04771.7780
H101.09822.14142.59132.09593.47672.35093.04772.47531.7780

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 107.044 C1 C2 H7 109.028
C1 C2 H8 109.028 C1 O4 H6 108.530
C2 C1 O4 107.044 C2 C1 H9 109.028
C2 C1 H10 109.028 C2 O3 H5 108.530
O3 C2 H7 111.792 O3 C2 H8 111.792
O4 C1 H9 111.792 O4 C1 H10 111.792
H7 C2 H8 108.098 H9 C1 H10 108.098
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.189     0.223
2 C -0.189     0.236
3 O -0.576     -0.680
4 O -0.576     -0.679
5 H 0.389     0.423
6 H 0.389     0.424
7 H 0.188     0.012
8 H 0.188     0.012
9 H 0.188     0.014
10 H 0.188     0.014


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP -0.001 0.001 0.000 0.001


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.669 -0.374 0.000
y -0.374 5.198 0.000
z 0.000 0.000 3.907


<r2> (average value of r2) Å2
<r2> 95.505
(<r2>)1/2 9.773