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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-190.397607
Energy at 298.15K-190.402930
HF Energy-189.898134
Nuclear repulsion energy81.330834
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
4/u)
Dep P Dep U
1 A 3765 3547 25.27      
2 A 3116 2935 58.28      
3 A 1599 1507 1.60      
4 A 1432 1349 4.06      
5 A 1241 1169 1.19      
6 A 1069 1007 114.60      
7 A 587 553 107.67      
8 A 418 394 36.44      
9 B 3763 3546 39.42      
10 B 3180 2997 55.83      
11 B 1493 1407 79.87      
12 B 1410 1328 26.51      
13 B 1125 1060 228.52      
14 B 1042 982 22.14      
15 B 423 398 218.66      

Unscaled Zero Point Vibrational Energy (zpe) 12831.1 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 12089.4 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 106.509 C1 O3 H7 106.509
O2 C1 O3 112.550 O2 C1 H4 112.342
O2 C1 H5 104.937 O3 C1 H4 104.937
O3 C1 H5 112.342 H4 C1 H5 109.876
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability