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

using model chemistry: G3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at G3
 hartrees
Energy at 0K-190.825962
Energy at 298.15K-190.821194
HF Energy-189.900627
Nuclear repulsion energy82.609447
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 HF/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 4093 3856 38.81      
2 A 3245 3057 77.47      
3 A 1697 1599 4.57      
4 A 1528 1440 5.65      
5 A 1319 1243 0.39      
6 A 1166 1099 142.08      
7 A 618 583 108.65      
8 A 438 413 59.56      
9 B 4092 3855 65.60      
10 B 3293 3103 86.07      
11 B 1610 1517 113.37      
12 B 1507 1420 54.33      
13 B 1233 1162 253.28      
14 B 1102 1038 26.26      
15 B 411 387 219.70      

Unscaled Zero Point Vibrational Energy (zpe) 13675.8 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 12885.4 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
1.38055 0.34093 0.30123

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 0.535
O2 0.000 1.171 -0.247
O3 0.000 -1.171 -0.247
H4 -0.892 -0.080 1.163
H5 0.892 0.080 1.163
H6 -0.806 1.141 -0.791
H7 0.806 -1.141 -0.791

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.40841.40841.09401.09401.92601.9260
O21.40842.34282.08611.99370.97312.5084
O31.40842.34281.99372.08612.50840.9731
H41.09402.08611.99371.79092.30622.7977
H51.09401.99372.08611.79092.79772.3062
H61.92600.97312.50842.30622.79772.7937
H71.92602.50840.97312.79772.30622.7937

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 108.795 C1 O3 H7 108.795
O2 C1 O3 112.505 O2 C1 H4 111.765
O2 C1 H5 105.759 O3 C1 H4 105.759
O3 C1 H5 111.765 H4 C1 H5 109.357
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability