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

using model chemistry: CCSD/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 CCSD/6-31G*
 hartrees
Energy at 0K-190.409887
Energy at 298.15K-190.415204
HF Energy-189.898137
Nuclear repulsion energy81.309035
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 CCSD/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 3755 3546 17.06      
2 A 3080 2908 58.31      
3 A 1588 1499 1.65      
4 A 1436 1356 5.51      
5 A 1241 1172 1.09      
6 A 1077 1017 112.65      
7 A 586 553 105.58      
8 A 416 393 38.72      
9 B 3754 3545 28.13      
10 B 3133 2959 58.69      
11 B 1492 1409 95.29      
12 B 1416 1337 21.46      
13 B 1139 1076 211.04      
14 B 1040 982 23.36      
15 B 416 392 212.90      

Unscaled Zero Point Vibrational Energy (zpe) 12783.8 cm-1
Scaled (by 0.9443) Zero Point Vibrational Energy (zpe) 12071.7 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 CCSD/6-31G*
ABC
1.37484 0.34142 0.30138

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.536
O2 0.000 1.170 -0.248
O3 0.000 -1.170 -0.248
H4 -0.894 -0.078 1.167
H5 0.894 0.078 1.167
H6 -0.806 1.144 -0.792
H7 0.806 -1.144 -0.792

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.40841.40841.09691.09691.92891.9289
O21.40842.34052.08771.99870.97282.5098
O31.40842.34051.99872.08772.50980.9728
H41.09692.08771.99871.79402.31052.8042
H51.09691.99872.08771.79402.80422.3105
H61.92890.97282.50982.31052.80422.7980
H71.92892.50980.97282.80422.31052.7980

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 106.770 C1 O3 H7 106.770
O2 C1 O3 112.378 O2 C1 H4 112.281
O2 C1 H5 105.155 O3 C1 H4 105.155
O3 C1 H5 112.281 H4 C1 H5 109.718
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability