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

using model chemistry: mPW1PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at mPW1PW91/6-31+G**
 hartrees
Energy at 0K-190.915475
Energy at 298.15K-190.920745
HF Energy-190.915475
Nuclear repulsion energy81.647910
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 mPW1PW91/6-31+G**
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 3877 3690 27.52      
2 A 3074 2926 60.02      
3 A 1537 1463 0.39      
4 A 1394 1327 3.28      
5 A 1210 1152 0.99      
6 A 1067 1016 109.29      
7 A 573 545 93.61      
8 A 408 389 57.46      
9 B 3876 3689 50.85      
10 B 3131 2980 44.21      
11 B 1457 1387 66.31      
12 B 1370 1304 28.52      
13 B 1106 1052 282.12      
14 B 1011 962 19.52      
15 B 392 373 209.16      

Unscaled Zero Point Vibrational Energy (zpe) 12741.1 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 12127.0 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 mPW1PW91/6-31+G**
ABC
1.40258 0.34186 0.30299

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.528
O2 0.000 1.167 -0.246
O3 0.000 -1.167 -0.246
H4 -0.892 -0.074 1.157
H5 0.892 0.074 1.157
H6 -0.808 1.183 -0.771
H7 0.808 -1.183 -0.771

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.40051.40051.09441.09441.93331.9333
O21.40052.33382.07541.99020.96322.5393
O31.40052.33381.99022.07542.53930.9632
H41.09442.07541.99021.79062.30302.7994
H51.09441.99022.07541.79062.79942.3030
H61.93330.96322.53932.30302.79942.8645
H71.93332.53930.96322.79942.30302.8645

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 108.328 C1 O3 H7 108.328
O2 C1 O3 112.863 O2 C1 H4 111.993
O2 C1 H5 105.162 O3 C1 H4 105.162
O3 C1 H5 111.993 H4 C1 H5 109.779
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.046      
2 O -0.528      
3 O -0.528      
4 H 0.146      
5 H 0.146      
6 H 0.358      
7 H 0.358      


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 -0.128 0.128
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.770 -3.829 0.000
y -3.829 -23.038 0.000
z 0.000 0.000 -16.578
Traceless
 xyz
x 4.038 -3.829 0.000
y -3.829 -6.863 0.000
z 0.000 0.000 2.825
Polar
3z2-r25.650
x2-y27.268
xy-3.829
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.170 -0.117 0.000
y -0.117 3.550 0.000
z 0.000 0.000 3.359


<r2> (average value of r2) Å2
<r2> 45.535
(<r2>)1/2 6.748