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

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at CBS-Q
 hartrees
Energy at 0K-190.692234
Energy at 298.15K-190.687528
HF Energy-189.895156
Nuclear repulsion energy82.665963
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 CBS-Q
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 4100 4100 31.13      
2 A 3229 3229 77.41      
3 A 1678 1678 3.61      
4 A 1527 1527 6.64      
5 A 1311 1311 0.82      
6 A 1168 1168 145.15      
7 A 624 624 124.45      
8 A 449 449 64.18      
9 B 4099 4099 53.11      
10 B 3282 3282 81.60      
11 B 1600 1600 110.30      
12 B 1503 1503 52.29      
13 B 1228 1228 261.38      
14 B 1092 1092 22.16      
15 B 415 415 233.75      

Unscaled Zero Point Vibrational Energy (zpe) 13653.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13653.2 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 CBS-Q
ABC
1.39040 0.34132 0.30202

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.527
O2 0.000 1.151 -0.244
O3 0.000 -1.151 -0.244
H4 -0.884 -0.067 1.154
H5 0.884 0.067 1.154
H6 -0.774 1.166 -0.785
H7 0.774 -1.166 -0.785

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.38581.38581.08571.08571.91801.9180
O21.38582.30252.05411.97800.94392.5018
O31.38582.30251.97802.05412.50180.9439
H41.08572.05411.97801.77332.29982.7775
H51.08571.97802.05411.77332.77752.2998
H61.91800.94392.50182.29982.77752.7981
H71.91802.50180.94392.77752.29982.7981

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 109.363 C1 O3 H7 109.363
O2 C1 O3 112.345 O2 C1 H4 111.853
O2 C1 H5 105.684 O3 C1 H4 105.684
O3 C1 H5 111.853 H4 C1 H5 109.504
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability