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

using model chemistry: mPW1PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at mPW1PW91/6-31G*
 hartrees
Energy at 0K-190.887313
Energy at 298.15K-190.892619
HF Energy-190.887313
Nuclear repulsion energy81.762582
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 mPW1PW91/6-31G*
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 3801 3604 16.72      
2 A 3068 2910 70.01      
3 A 1564 1483 1.23      
4 A 1426 1352 3.77      
5 A 1233 1169 0.51      
6 A 1078 1022 110.35      
7 A 584 554 98.29      
8 A 409 388 41.33      
9 B 3800 3604 29.47      
10 B 3119 2957 66.18      
11 B 1482 1406 86.97      
12 B 1402 1329 27.11      
13 B 1131 1073 233.33      
14 B 1029 976 21.78      
15 B 419 397 203.97      

Unscaled Zero Point Vibrational Energy (zpe) 12772.6 cm-1
Scaled (by 0.9483) Zero Point Vibrational Energy (zpe) 12112.2 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 mPW1PW91/6-31G*
ABC
1.40243 0.34381 0.30431

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.527
O2 0.000 1.166 -0.245
O3 0.000 -1.166 -0.245
H4 -0.890 -0.079 1.162
H5 0.890 0.079 1.162
H6 -0.803 1.148 -0.783
H7 0.803 -1.148 -0.783

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.39791.39791.09611.09611.91791.9179
O21.39792.33142.07841.98760.96692.5073
O31.39792.33141.98762.07842.50730.9669
H41.09612.07841.98761.78722.30122.7911
H51.09611.98762.07841.78722.79112.3012
H61.91790.96692.50732.30122.79112.8012
H71.91792.50730.96692.79112.30122.8012

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 106.976 C1 O3 H7 106.976
O2 C1 O3 112.996 O2 C1 H4 112.326
O2 C1 H5 105.033 O3 C1 H4 105.033
O3 C1 H5 112.326 H4 C1 H5 109.229
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.093      
2 O -0.617      
3 O -0.617      
4 H 0.163      
5 H 0.163      
6 H 0.407      
7 H 0.407      


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 -0.344 0.344
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.420 -3.417 0.000
y -3.417 -22.075 0.000
z 0.000 0.000 -15.968
Traceless
 xyz
x 3.602 -3.417 0.000
y -3.417 -6.381 0.000
z 0.000 0.000 2.780
Polar
3z2-r25.559
x2-y26.655
xy-3.417
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.761 -0.133 0.000
y -0.133 2.748 0.000
z 0.000 0.000 2.783


<r2> (average value of r2) Å2
<r2> 44.942
(<r2>)1/2 6.704