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

using model chemistry: B3LYP/3-21G

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/3-21G
 hartrees
Energy at 0K-228.961491
Energy at 298.15K-228.968640
Nuclear repulsion energy128.661480
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/3-21G
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 3489 3366 0.00      
2 Ag 3013 2907 0.00      
3 Ag 1591 1535 0.00      
4 Ag 1493 1441 0.00      
5 Ag 1308 1262 0.00      
6 Ag 1030 994 0.00      
7 Ag 983 948 0.00      
8 Ag 463 447 0.00      
9 Au 3066 2958 130.15      
10 Au 1212 1169 0.57      
11 Au 887 856 2.43      
12 Au 272 263 301.20      
13 Au 127 123 10.39      
14 Bg 3034 2927 0.00      
15 Bg 1347 1300 0.00      
16 Bg 1152 1112 0.00      
17 Bg 268 259 0.00      
18 Bu 3490 3367 0.85      
19 Bu 3020 2914 87.49      
20 Bu 1605 1549 6.10      
21 Bu 1441 1390 3.12      
22 Bu 1216 1173 94.19      
23 Bu 1020 984 161.06      
24 Bu 271 262 25.87      

Unscaled Zero Point Vibrational Energy (zpe) 18397.6 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 17751.8 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/3-21G
ABC
0.97732 0.13190 0.12157

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

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 1.408 -1.142 0.000
O4 -1.408 1.142 0.000
H5 1.455 -2.135 0.000
H6 -1.455 2.135 0.000
H7 -0.542 -1.109 0.890
H8 -0.542 -1.109 -0.890
H9 0.542 1.109 0.890
H10 0.542 1.109 -0.890

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9 H10
C11.52332.36781.45863.24122.00062.14172.14171.09861.0986
C21.52331.45862.36782.00063.24121.09861.09862.14172.1417
O32.36781.45863.62590.99384.35132.14382.14382.57122.5712
O41.45862.36783.62594.35130.99382.57122.57122.14382.1438
H53.24122.00060.99384.35135.16672.41482.41483.48573.4857
H62.00063.24124.35130.99385.16673.48573.48572.41482.4148
H72.14171.09862.14382.57122.41483.48571.78022.46933.0441
H82.14171.09862.14382.57122.41483.48571.78023.04412.4693
H91.09862.14172.57122.14383.48572.41482.46933.04411.7802
H101.09862.14172.57122.14383.48572.41483.04412.46931.7802

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 105.111 C1 C2 H7 108.456
C1 C2 H8 108.456 C1 O4 H6 107.818
C2 C1 O4 105.111 C2 C1 H9 108.456
C2 C1 H10 108.456 C2 O3 H5 107.818
O3 C2 H7 113.183 O3 C2 H8 113.183
O4 C1 H9 113.183 O4 C1 H10 113.183
H7 C2 H8 108.238 H9 C1 H10 108.238
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.150     0.181
2 C -0.150     0.181
3 O -0.558     -0.629
4 O -0.558     -0.629
5 H 0.339     0.399
6 H 0.339     0.399
7 H 0.184     0.025
8 H 0.184     0.025
9 H 0.184     0.025
10 H 0.184     0.025


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 0.003 -0.004 0.000 0.005


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 4.248 -0.590 0.000
y -0.590 4.761 0.000
z 0.000 0.000 3.220


<r2> (average value of r2) Å2
<r2> 96.509
(<r2>)1/2 9.824