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

using model chemistry: QCISD/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 QCISD/6-31G*
 hartrees
Energy at 0K-190.410987
Energy at 298.15K-190.416301
HF Energy-189.898039
Nuclear repulsion energy81.269116
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 QCISD/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3751 3572 16.92      
2 A 3076 2929 59.25      
3 A 1585 1510 1.67      
4 A 1434 1365 5.44      
5 A 1238 1179 1.29      
6 A 1073 1022 112.13      
7 A 585 557 105.35      
8 A 415 395 38.25      
9 B 3750 3572 27.97      
10 B 3129 2980 59.61      
11 B 1490 1419 95.02      
12 B 1413 1346 20.95      
13 B 1134 1080 213.41      
14 B 1038 989 22.20      
15 B 417 397 212.70      

Unscaled Zero Point Vibrational Energy (zpe) 12764.7 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 12155.8 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 QCISD/6-31G*
ABC
1.37397 0.34098 0.30104

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.536
O2 0.000 1.171 -0.248
O3 0.000 -1.171 -0.248
H4 -0.894 -0.078 1.167
H5 0.894 0.078 1.167
H6 -0.807 1.144 -0.791
H7 0.807 -1.144 -0.791

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.40931.40931.09721.09721.92931.9293
O21.40932.34202.08881.99920.97302.5113
O31.40932.34201.99922.08882.51130.9730
H41.09722.08881.99921.79492.31052.8046
H51.09721.99922.08881.79492.80462.3105
H61.92930.97302.51132.31052.80462.8001
H71.92932.51130.97302.80462.31052.8001

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 106.733 C1 O3 H7 106.733
O2 C1 O3 112.385 O2 C1 H4 112.291
O2 C1 H5 105.125 O3 C1 H4 105.125
O3 C1 H5 112.291 H4 C1 H5 109.755
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability