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All results from a given calculation for CH2(OH)2 (methanediol)

using model chemistry: HF/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at HF/CEP-31G
 hartrees
Energy at 0K-39.117542
Energy at 298.15K-39.122862
HF Energy-39.117542
Nuclear repulsion energy48.468619
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 HF/CEP-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 4077 3675 29.06      
2 A 3311 2984 92.84      
3 A 1664 1500 1.21      
4 A 1474 1329 3.89      
5 A 1264 1139 2.07      
6 A 1100 992 154.34      
7 A 580 523 186.63      
8 A 448 404 91.67      
9 B 4076 3675 47.23      
10 B 3390 3056 74.93      
11 B 1565 1411 63.65      
12 B 1444 1302 62.53      
13 B 1163 1049 315.37      
14 B 1062 957 31.58      
15 B 370 333 295.92      

Unscaled Zero Point Vibrational Energy (zpe) 13493.9 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 12163.4 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 HF/CEP-31G
ABC
1.36519 0.33281 0.29339

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.548
O2 0.000 1.179 -0.252
O3 0.000 -1.179 -0.252
H4 -0.891 -0.070 1.159
H5 0.891 0.070 1.159
H6 -0.788 1.277 -0.786
H7 0.788 -1.277 -0.786

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.42511.42511.08251.08252.00812.0081
O21.42512.35892.08452.00420.95722.6348
O31.42512.35892.00422.08452.63480.9572
H41.08252.08452.00421.78672.36842.8394
H51.08252.00422.08451.78672.83942.3684
H62.00810.95722.63482.36842.83943.0019
H72.00812.63480.95722.83942.36843.0019

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 113.440 C1 O3 H7 113.440
O2 C1 O3 111.710 O2 C1 H4 111.729
O2 C1 H5 105.293 O3 C1 H4 105.293
O3 C1 H5 111.729 H4 C1 H5 111.230
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.031      
2 O -0.536      
3 O -0.536      
4 H 0.167      
5 H 0.167      
6 H 0.384      
7 H 0.384      


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 0.102 0.102
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.564 -5.024 0.000
y -5.024 -23.936 0.000
z 0.000 0.000 -15.912
Traceless
 xyz
x 4.360 -5.024 0.000
y -5.024 -8.198 0.000
z 0.000 0.000 3.838
Polar
3z2-r27.675
x2-y28.372
xy-5.024
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.389 -0.142 0.000
y -0.142 2.459 0.000
z 0.000 0.000 2.381


<r2> (average value of r2) Å2
<r2> 40.219
(<r2>)1/2 6.342