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

using model chemistry: B3PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-228.880248
Energy at 298.15K-228.887402
Nuclear repulsion energy128.968419
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 B3PW91/3-21G*
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 3545 3401 0.00      
2 Ag 3017 2895 0.00      
3 Ag 1586 1521 0.00      
4 Ag 1494 1433 0.00      
5 Ag 1310 1257 0.00      
6 Ag 1046 1003 0.00      
7 Ag 993 952 0.00      
8 Ag 466 447 0.00      
9 Au 3076 2951 125.70      
10 Au 1217 1168 0.42      
11 Au 885 849 2.08      
12 Au 272 261 318.59      
13 Au 132 126 10.88      
14 Bg 3043 2919 0.00      
15 Bg 1347 1292 0.00      
16 Bg 1154 1107 0.00      
17 Bg 266 256 0.00      
18 Bu 3546 3402 2.90      
19 Bu 3025 2902 87.19      
20 Bu 1598 1533 5.87      
21 Bu 1439 1381 4.15      
22 Bu 1217 1168 90.37      
23 Bu 1036 994 169.66      
24 Bu 271 260 27.51      

Unscaled Zero Point Vibrational Energy (zpe) 18489.2 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 17738.5 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 B3PW91/3-21G*
ABC
0.98155 0.13257 0.12221

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

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 1.402 -1.141 0.000
O4 -1.402 1.141 0.000
H5 1.448 -2.131 0.000
H6 -1.448 2.131 0.000
H7 -0.544 -1.106 0.891
H8 -0.544 -1.106 -0.891
H9 0.544 1.106 0.891
H10 0.544 1.106 -0.891

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9 H10
C11.51992.36241.45333.23311.99412.13822.13821.09961.0996
C21.51991.45332.36241.99413.23311.09961.09962.13822.1382
O32.36241.45333.61610.99054.33952.14072.14072.56542.5654
O41.45332.36243.61614.33950.99052.56542.56542.14072.1407
H53.23311.99410.99054.33955.15252.41082.41083.47683.4768
H61.99413.23314.33950.99055.15253.47683.47682.41082.4108
H72.13821.09962.14072.56542.41083.47681.78142.46553.0417
H82.13821.09962.14072.56542.41083.47681.78143.04172.4655
H91.09962.13822.56542.14073.47682.41082.46553.04171.7814
H101.09962.13822.56542.14073.47682.41083.04172.46551.7814

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 105.205 C1 C2 H7 108.359
C1 C2 H8 108.359 C1 O4 H6 107.867
C2 C1 O4 105.205 C2 C1 H9 108.359
C2 C1 H10 108.359 C2 O3 H5 107.867
O3 C2 H7 113.247 O3 C2 H8 113.247
O4 C1 H9 113.247 O4 C1 H10 113.247
H7 C2 H8 108.197 H9 C1 H10 108.197
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.193      
2 C -0.193      
3 O -0.572      
4 O -0.572      
5 H 0.353      
6 H 0.353      
7 H 0.206      
8 H 0.206      
9 H 0.206      
10 H 0.206      


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 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 96.016
(<r2>)1/2 9.799