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/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at B3LYP/6-31G**
 hartrees
Energy at 0K-230.252209
Energy at 298.15K-230.259317
Nuclear repulsion energy130.150565
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/6-31G**
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 3839 3689 0.00      
2 Ag 2993 2876 0.00      
3 Ag 1542 1481 0.00      
4 Ag 1498 1439 0.00      
5 Ag 1296 1245 0.00      
6 Ag 1095 1053 0.00      
7 Ag 991 952 0.00      
8 Ag 480 462 0.00      
9 Au 3047 2927 129.66      
10 Au 1231 1183 2.01      
11 Au 841 808 2.91      
12 Au 245 235 247.44      
13 Au 128 123 24.54      
14 Bg 3019 2901 0.00      
15 Bg 1309 1258 0.00      
16 Bg 1171 1126 0.00      
17 Bg 236 227 0.00      
18 Bu 3840 3690 39.41      
19 Bu 2999 2881 114.75      
20 Bu 1552 1492 7.04      
21 Bu 1421 1365 11.56      
22 Bu 1196 1150 98.43      
23 Bu 1084 1041 222.60      
24 Bu 293 282 20.07      

Unscaled Zero Point Vibrational Energy (zpe) 18673.4 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 17941.4 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/6-31G**
ABC
1.01459 0.13338 0.12337

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.760 0.000
C2 0.000 -0.760 0.000
O3 1.359 -1.179 0.000
O4 -1.359 1.179 0.000
H5 1.373 -2.143 0.000
H6 -1.373 2.143 0.000
H7 -0.543 -1.116 0.888
H8 -0.543 -1.116 -0.888
H9 0.543 1.116 0.888
H10 0.543 1.116 -0.888

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9 H10
C11.52012.36751.42203.21141.94892.14572.14571.10051.1005
C21.52011.42202.36751.94893.21141.10051.10052.14572.1457
O32.36751.42203.59770.96454.30082.10032.10032.59232.5923
O41.42202.36753.59774.30080.96452.59232.59232.10032.1003
H53.21141.94890.96454.30085.09032.34872.34873.47843.4784
H61.94893.21144.30080.96455.09033.47843.47842.34872.3487
H72.14571.10052.10032.59232.34873.47841.77682.48243.0527
H82.14571.10052.10032.59232.34873.47841.77683.05272.4824
H91.10052.14572.59232.10033.47842.34872.48243.05271.7768
H101.10052.14572.59232.10033.47842.34873.05272.48241.7768

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 107.117 C1 C2 H7 108.875
C1 C2 H8 108.875 C1 O4 H6 107.964
C2 C1 O4 107.117 C2 C1 H9 108.875
C2 C1 H10 108.875 C2 O3 H5 107.964
O3 C2 H7 112.117 O3 C2 H8 112.117
O4 C1 H9 112.117 O4 C1 H10 112.117
H7 C2 H8 107.666 H9 C1 H10 107.666
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.048      
2 C 0.048      
3 O -0.545      
4 O -0.545      
5 H 0.310      
6 H 0.310      
7 H 0.093      
8 H 0.093      
9 H 0.093      
10 H 0.093      


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        


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 4.514 -0.441 0.000
y -0.441 5.005 0.000
z 0.000 0.000 3.758


<r2> (average value of r2) Å2
<r2> 95.408
(<r2>)1/2 9.768