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

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G**
 hartrees
Energy at 0K-190.437173
Energy at 298.15K-190.442483
HF Energy-189.914586
Nuclear repulsion energy81.527689
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 MP2=FULL/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 3884 3629 22.70      
2 A 3133 2927 63.61      
3 A 1599 1494 2.64      
4 A 1429 1335 3.60      
5 A 1238 1157 0.81      
6 A 1068 998 113.23      
7 A 584 545 98.65      
8 A 406 380 40.17      
9 B 3883 3628 36.61      
10 B 3201 2991 58.03      
11 B 1495 1397 75.32      
12 B 1404 1312 29.44      
13 B 1129 1055 223.44      
14 B 1039 971 27.38      
15 B 415 388 206.65      

Unscaled Zero Point Vibrational Energy (zpe) 12952.2 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 12102.6 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 MP2=FULL/6-31G**
ABC
1.39395 0.34126 0.30184

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.532
O2 0.000 1.171 -0.247
O3 0.000 -1.171 -0.247
H4 -0.888 -0.079 1.159
H5 0.888 0.079 1.159
H6 -0.803 1.144 -0.782
H7 0.803 -1.144 -0.782

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.40621.40621.08991.08991.91831.9183
O21.40622.34182.08031.98910.96502.5082
O31.40622.34181.98912.08032.50820.9650
H41.08992.08031.98911.78272.29602.7855
H51.08991.98912.08031.78272.78552.2960
H61.91830.96502.50822.29602.78552.7957
H71.91832.50820.96502.78552.29602.7957

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 106.506 C1 O3 H7 106.506
O2 C1 O3 112.743 O2 C1 H4 112.287
O2 C1 H5 104.958 O3 C1 H4 104.958
O3 C1 H5 112.287 H4 C1 H5 109.740
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability