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

using model chemistry: QCISD(T)/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 QCISD(T)/6-31G*
 hartrees
Energy at 0K-190.421072
Energy at 298.15K-190.426369
HF Energy-189.897494
Nuclear repulsion energy81.127476
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 QCISD(T)/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 3718 3566        
2 A 3055 2930        
3 A 1577 1512        
4 A 1426 1368        
5 A 1230 1180        
6 A 1060 1016        
7 A 580 556        
8 A 410 393        
9 B 3717 3566        
10 B 3109 2982        
11 B 1480 1420        
12 B 1405 1347        
13 B 1118 1072        
14 B 1032 990        
15 B 416 399        

Unscaled Zero Point Vibrational Energy (zpe) 12664.6 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 12149.1 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 QCISD(T)/6-31G*
ABC
1.36941 0.33977 0.29997

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.537
O2 0.000 1.173 -0.248
O3 0.000 -1.173 -0.248
H4 -0.895 -0.080 1.169
H5 0.895 0.080 1.169
H6 -0.808 1.141 -0.793
H7 0.808 -1.141 -0.793

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.41201.41201.09881.09881.92971.9297
O21.41202.34692.09312.00170.97502.5109
O31.41202.34692.00172.09312.51090.9750
H41.09882.09312.00171.79792.31262.8066
H51.09882.00172.09311.79792.80662.3126
H61.92970.97502.51092.31262.80662.7955
H71.92972.51090.97502.80662.31262.7955

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 106.441 C1 O3 H7 106.441
O2 C1 O3 112.409 O2 C1 H4 112.346
O2 C1 H5 105.043 O3 C1 H4 105.043
O3 C1 H5 112.346 H4 C1 H5 109.790
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability