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

using model chemistry: PBEPBE/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 PBEPBE/3-21G
 hartrees
Energy at 0K-228.687820
Energy at 298.15K-228.694855
Nuclear repulsion energy128.056742
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 PBEPBE/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 3375 3344 0.00      
2 Ag 2921 2894 0.00      
3 Ag 1543 1529 0.00      
4 Ag 1452 1439 0.00      
5 Ag 1279 1267 0.00      
6 Ag 1005 996 0.00      
7 Ag 963 954 0.00      
8 Ag 452 448 0.00      
9 Au 2975 2948 139.47      
10 Au 1170 1159 0.00      
11 Au 865 857 2.08      
12 Au 253 251 282.38      
13 Au 124 123 12.09      
14 Bg 2941 2914 0.00      
15 Bg 1305 1293 0.00      
16 Bg 1118 1108 0.00      
17 Bg 250 248 0.00      
18 Bu 3376 3346 1.92      
19 Bu 2928 2902 98.72      
20 Bu 1555 1541 6.33      
21 Bu 1400 1387 2.96      
22 Bu 1187 1177 78.38      
23 Bu 995 986 156.79      
24 Bu 261 258 24.14      

Unscaled Zero Point Vibrational Energy (zpe) 17846.5 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 17684.1 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 PBEPBE/3-21G
ABC
0.96102 0.13127 0.12088

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.456 0.614 0.000
C2 -0.456 -0.614 0.000
O3 0.456 -1.760 0.000
O4 -0.456 1.760 0.000
H5 -0.121 -2.583 0.000
H6 0.121 2.583 0.000
H7 -1.106 -0.561 0.898
H8 -1.106 -0.561 -0.898
H9 1.106 0.561 0.898
H10 1.106 0.561 -0.898

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9 H10
C11.52882.37371.46493.24831.99772.15072.15071.10981.1098
C21.52881.46492.37371.99773.24831.10981.10982.15072.1507
O32.37371.46493.63651.00504.35612.16432.16432.57232.5723
O41.46492.37373.63654.35611.00502.57232.57232.16432.1643
H53.24831.99771.00504.35615.17172.42182.42183.49243.4924
H61.99773.24834.35611.00505.17173.49243.49242.42182.4218
H72.15071.10982.16432.57232.42183.49241.79542.48083.0623
H82.15071.10982.16432.57232.42183.49241.79543.06232.4808
H91.10982.15072.57232.16433.49242.42182.48083.06231.7954
H101.10982.15072.57232.16433.49242.42183.06232.48081.7954

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 104.898 C1 C2 H7 108.148
C1 C2 H8 108.148 C1 O4 H6 106.468
C2 C1 O4 104.898 C2 C1 H9 108.148
C2 C1 H10 108.148 C2 O3 H5 106.468
O3 C2 H7 113.694 O3 C2 H8 113.694
O4 C1 H9 113.694 O4 C1 H10 113.694
H7 C2 H8 107.973 H9 C1 H10 107.973
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.204      
2 C -0.204      
3 O -0.524      
4 O -0.524      
5 H 0.337      
6 H 0.337      
7 H 0.195      
8 H 0.195      
9 H 0.195      
10 H 0.195      


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 -26.080 6.301 0.000
y 6.301 -17.728 0.000
z 0.000 0.000 -25.111
Traceless
 xyz
x -4.661 6.301 0.000
y 6.301 7.868 0.000
z 0.000 0.000 -3.207
Polar
3z2-r2-6.414
x2-y2-8.353
xy6.301
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.064 0.073 0.000
y 0.073 5.329 0.000
z 0.000 0.000 3.336


<r2> (average value of r2) Å2
<r2> 97.006
(<r2>)1/2 9.849