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

using model chemistry: CISD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at CISD/3-21G*
 hartrees
Energy at 0K-189.162115
Energy at 298.15K-189.167393
HF Energy-188.845209
Nuclear repulsion energy79.779035
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 CISD/3-21G*
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 3612 3375 1.68      
2 A 3116 2911 54.05      
3 A 1632 1525 2.34      
4 A 1458 1363 3.79      
5 A 1253 1171 2.04      
6 A 1007 941 114.71      
7 A 576 538 148.78      
8 A 403 376 26.71      
9 B 3610 3373 3.28      
10 B 3159 2952 59.75      
11 B 1502 1403 55.43      
12 B 1427 1333 27.76      
13 B 1083 1012 149.54      
14 B 1032 964 52.88      
15 B 403 376 241.16      

Unscaled Zero Point Vibrational Energy (zpe) 12635.3 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 11806.4 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 CISD/3-21G*
ABC
1.34601 0.32509 0.28724

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/3-21G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.546
O2 0.000 1.200 -0.250
O3 0.000 -1.200 -0.250
H4 -0.889 -0.089 1.173
H5 0.889 0.089 1.173
H6 -0.811 1.195 -0.811
H7 0.811 -1.195 -0.811

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.44021.44021.09111.09111.98191.9819
O21.44022.39952.11602.01240.98582.5895
O31.44022.39952.01242.11602.58950.9858
H41.09112.11602.01241.78602.36512.8370
H51.09112.01242.11601.78602.83702.3651
H61.98190.98582.58952.36512.83702.8874
H71.98192.58950.98582.83702.36512.8874

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 108.096 C1 O3 H7 108.096
O2 C1 O3 112.827 O2 C1 H4 112.701
O2 C1 H5 104.468 O3 C1 H4 104.468
O3 C1 H5 112.701 H4 C1 H5 109.853
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability