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

using model chemistry: MP2/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-190.443363
Energy at 298.15K-190.448683
HF Energy-189.922960
Nuclear repulsion energy81.433515
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/cc-pVDZ
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 3835 3653 25.65      
2 A 3079 2933 74.06      
3 A 1544 1471 2.41      
4 A 1419 1352 3.48      
5 A 1228 1170 0.67      
6 A 1067 1017 107.76      
7 A 586 558 86.48      
8 A 405 386 34.61      
9 B 3834 3652 42.45      
10 B 3141 2992 65.91      
11 B 1474 1404 82.01      
12 B 1389 1323 18.79      
13 B 1133 1079 220.07      
14 B 1034 984 17.70      
15 B 418 398 183.82      

Unscaled Zero Point Vibrational Energy (zpe) 12792.5 cm-1
Scaled (by 0.9525) Zero Point Vibrational Energy (zpe) 12184.9 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/cc-pVDZ
ABC
1.38480 0.34164 0.30214

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.530
O2 0.000 1.171 -0.247
O3 0.000 -1.171 -0.247
H4 -0.897 -0.081 1.170
H5 0.897 0.081 1.170
H6 -0.805 1.125 -0.784
H7 0.805 -1.125 -0.784

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.40541.40541.10441.10441.90791.9079
O21.40542.34172.09251.99990.96862.4912
O31.40542.34171.99992.09252.49120.9686
H41.10442.09251.99991.80072.29772.7932
H51.10441.99992.09251.80072.79322.2977
H61.90790.96862.49122.29772.79322.7661
H71.90792.49120.96862.79322.29772.7661

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 105.483 C1 O3 H7 105.483
O2 C1 O3 112.841 O2 C1 H4 112.420
O2 C1 H5 105.026 O3 C1 H4 105.026
O3 C1 H5 112.420 H4 C1 H5 109.218
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability