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: BLYP/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at BLYP/aug-cc-pVDZ
 hartrees
Energy at 0K-230.213649
Energy at 298.15K-230.220655
Nuclear repulsion energy128.486279
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 BLYP/aug-cc-pVDZ
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 3690 3683 0.00      
2 Ag 2927 2921 0.00      
3 Ag 1457 1454 0.00      
4 Ag 1411 1408 0.00      
5 Ag 1249 1247 0.00      
6 Ag 1004 1002 0.00      
7 Ag 954 952 0.00      
8 Ag 458 457 0.00      
9 Au 2983 2977 83.13      
10 Au 1169 1167 0.45      
11 Au 807 806 0.84      
12 Au 254 254 195.70      
13 Au 100 99 30.34      
14 Bg 2957 2951 0.00      
15 Bg 1253 1250 0.00      
16 Bg 1110 1108 0.00      
17 Bg 247 247 0.00      
18 Bu 3691 3684 51.49      
19 Bu 2932 2926 108.77      
20 Bu 1465 1462 4.37      
21 Bu 1345 1342 11.32      
22 Bu 1159 1157 72.69      
23 Bu 985 983 202.12      
24 Bu 289 289 18.38      

Unscaled Zero Point Vibrational Energy (zpe) 17947.3 cm-1
Scaled (by 0.9981) Zero Point Vibrational Energy (zpe) 17913.2 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 BLYP/aug-cc-pVDZ
ABC
0.98857 0.13005 0.12030

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/aug-cc-pVDZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.445 0.623 0.000
C2 -0.445 -0.623 0.000
O3 0.445 -1.768 0.000
O4 -0.445 1.768 0.000
H5 -0.099 -2.576 0.000
H6 0.099 2.576 0.000
H7 -1.091 -0.618 0.901
H8 -1.091 -0.618 -0.901
H9 1.091 0.618 0.901
H10 1.091 0.618 -0.901

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9 H10
C11.53062.39111.44993.24461.98322.17072.17071.10941.1094
C21.53061.44992.39111.98323.24461.10941.10942.17072.1707
O32.39111.44993.64640.97354.35772.11982.11982.63172.6317
O41.44992.39113.64644.35770.97352.63172.63172.11982.1198
H53.24461.98320.97354.35775.15542.37252.37253.52583.5258
H61.98323.24464.35770.97355.15543.52583.52582.37252.3725
H72.17071.10942.11982.63172.37253.52581.80282.50843.0891
H82.17071.10942.11982.63172.37253.52581.80283.08912.5084
H91.10942.17072.63172.11983.52582.37252.50843.08911.8028
H101.10942.17072.63172.11983.52582.37253.08912.50841.8028

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 106.658 C1 C2 H7 109.586
C1 C2 H8 109.586 C1 O4 H6 108.229
C2 C1 O4 106.658 C2 C1 H9 109.586
C2 C1 H10 109.586 C2 O3 H5 108.229
O3 C2 H7 111.148 O3 C2 H8 111.148
O4 C1 H9 111.148 O4 C1 H10 111.148
H7 C2 H8 108.688 H9 C1 H10 108.688
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.163      
2 C 1.163      
3 O -0.377      
4 O -0.377      
5 H 0.061      
6 H 0.061      
7 H -0.423      
8 H -0.423      
9 H -0.423      
10 H -0.423      


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
Primitive
 xyz
x -27.313 6.483 0.000
y 6.483 -20.474 0.000
z 0.000 0.000 -26.267
Traceless
 xyz
x -3.943 6.483 0.000
y 6.483 6.316 0.000
z 0.000 0.000 -2.374
Polar
3z2-r2-4.748
x2-y2-6.839
xy6.483
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.912 -0.106 0.000
y -0.106 7.017 0.000
z 0.000 0.000 5.346


<r2> (average value of r2) Å2
<r2> 98.461
(<r2>)1/2 9.923