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

using model chemistry: PBEPBE/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at PBEPBE/6-31G(2df,p)
 hartrees
Energy at 0K-190.746062
Energy at 298.15K-190.751257
HF Energy-190.746062
Nuclear repulsion energy81.020998
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/6-31G(2df,p)
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 3687 3649 9.68      
2 A 2928 2898 66.92      
3 A 1472 1457 0.46      
4 A 1367 1353 2.96      
5 A 1176 1163 0.89      
6 A 1006 996 84.23      
7 A 554 549 63.44      
8 A 371 367 36.36      
9 B 3687 3649 17.34      
10 B 2973 2943 56.72      
11 B 1406 1391 68.40      
12 B 1338 1324 15.49      
13 B 1043 1033 211.82      
14 B 987 977 16.45      
15 B 396 392 160.27      

Unscaled Zero Point Vibrational Energy (zpe) 12195.8 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 12070.2 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/6-31G(2df,p)
ABC
1.38264 0.33668 0.29843

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.529
O2 0.000 1.179 -0.247
O3 0.000 -1.179 -0.247
H4 -0.899 -0.087 1.171
H5 0.899 0.087 1.171
H6 -0.811 1.148 -0.784
H7 0.811 -1.148 -0.784

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.41141.41141.10781.10781.92391.9239
O21.41142.35742.10252.00280.97322.5220
O31.41142.35742.00282.10252.52200.9732
H41.10782.10252.00281.80592.31442.8059
H51.10782.00282.10251.80592.80592.3144
H61.92390.97322.52202.31442.80592.8114
H71.92392.52200.97322.80592.31442.8114

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 106.109 C1 O3 H7 106.109
O2 C1 O3 113.261 O2 C1 H4 112.589
O2 C1 H5 104.670 O3 C1 H4 104.670
O3 C1 H5 112.589 H4 C1 H5 109.183
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.034      
2 O -0.373      
3 O -0.373      
4 H 0.110      
5 H 0.110      
6 H 0.279      
7 H 0.279      


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 -0.381 0.381
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.589 -2.985 0.000
y -2.985 -21.577 0.000
z 0.000 0.000 -16.277
Traceless
 xyz
x 3.338 -2.985 0.000
y -2.985 -5.644 0.000
z 0.000 0.000 2.307
Polar
3z2-r24.614
x2-y25.988
xy-2.985
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.136 -0.191 0.000
y -0.191 3.257 0.000
z 0.000 0.000 3.227


<r2> (average value of r2) Å2
<r2> 45.568
(<r2>)1/2 6.750