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

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-228.067153
Energy at 298.15K-228.074369
HF Energy-227.649526
Nuclear repulsion energy128.189359
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 MP2/3-21G
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 3532 3371 0.00      
2 Ag 3071 2931 0.00      
3 Ag 1632 1558 0.00      
4 Ag 1523 1454 0.00      
5 Ag 1325 1265 0.00      
6 Ag 1035 988 0.00      
7 Ag 995 950 0.00      
8 Ag 465 444 0.00      
9 Au 3129 2987 111.72      
10 Au 1243 1186 1.66      
11 Au 897 857 3.46      
12 Au 281 269 316.75      
13 Au 138 132 9.51      
14 Bg 3102 2961 0.00      
15 Bg 1376 1313 0.00      
16 Bg 1182 1128 0.00      
17 Bg 280 267 0.00      
18 Bu 3533 3372 3.21      
19 Bu 3077 2937 68.14      
20 Bu 1644 1569 5.26      
21 Bu 1463 1396 3.38      
22 Bu 1230 1174 106.18      
23 Bu 1020 974 134.33      
24 Bu 272 260 29.10      

Unscaled Zero Point Vibrational Energy (zpe) 18722.9 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 17871.0 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 MP2/3-21G
ABC
0.96984 0.13081 0.12052

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.763 0.000
C2 0.000 -0.763 0.000
O3 1.422 -1.139 0.000
O4 -1.422 1.139 0.000
H5 1.471 -2.129 0.000
H6 -1.471 2.129 0.000
H7 -0.534 -1.116 0.890
H8 -0.534 -1.116 -0.890
H9 0.534 1.116 0.890
H10 0.534 1.116 -0.890

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9 H10
C11.52572.37511.47123.24482.00782.14652.14651.09651.0965
C21.52571.47122.37512.00783.24481.09651.09652.14652.1465
O32.37511.47123.64460.99104.36522.14962.14962.58202.5820
O41.47122.37513.64464.36520.99102.58202.58202.14962.1496
H53.24482.00780.99104.36525.17612.41692.41693.49293.4929
H62.00783.24484.36520.99105.17613.49293.49292.41692.4169
H72.14651.09652.14962.58202.41693.49291.78002.47463.0483
H82.14651.09652.14962.58202.41693.49291.78003.04832.4746
H91.09652.14652.58202.14963.49292.41692.47463.04831.7800
H101.09652.14652.58202.14963.49292.41693.04832.47461.7800

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 104.827 C1 C2 H7 108.783
C1 C2 H8 108.783 C1 O4 H6 107.664
C2 C1 O4 104.827 C2 C1 H9 108.783
C2 C1 H10 108.783 C2 O3 H5 107.664
O3 C2 H7 112.877 O3 C2 H8 112.877
O4 C1 H9 112.877 O4 C1 H10 112.877
H7 C2 H8 108.516 H9 C1 H10 108.516
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.127     0.209
2 C -0.127     0.209
3 O -0.578     -0.655
4 O -0.578     -0.655
5 H 0.348     0.408
6 H 0.348     0.408
7 H 0.178     0.019
8 H 0.178     0.019
9 H 0.178     0.019
10 H 0.178     0.019


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
Primitive
 xyz
x -30.111 -2.009 0.000
y -2.009 -14.806 0.000
z 0.000 0.000 -25.396
Traceless
 xyz
x -10.010 -2.009 0.000
y -2.009 12.947 0.000
z 0.000 0.000 -2.937
Polar
3z2-r2-5.875
x2-y2-15.305
xy-2.009
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.145 -0.559 0.000
y -0.559 4.546 0.000
z 0.000 0.000 3.143


<r2> (average value of r2) Å2
<r2> 97.430
(<r2>)1/2 9.871