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

using model chemistry: MP2=FULL/TZVP

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/TZVP
 hartrees
Energy at 0K-190.595238
Energy at 298.15K-190.600587
HF Energy-189.984094
Nuclear repulsion energy81.609224
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/TZVP
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 3852 3670 31.42      
2 A 3110 2963 57.47      
3 A 1563 1489 1.56      
4 A 1425 1357 3.01      
5 A 1236 1178 2.17      
6 A 1061 1010 111.31      
7 A 597 569 97.99      
8 A 425 405 35.48      
9 B 3851 3669 45.87      
10 B 3177 3026 40.72      
11 B 1500 1429 64.37      
12 B 1391 1325 23.13      
13 B 1097 1045 257.36      
14 B 1050 1000 4.15      
15 B 421 401 203.50      

Unscaled Zero Point Vibrational Energy (zpe) 12877.3 cm-1
Scaled (by 0.9527) Zero Point Vibrational Energy (zpe) 12268.2 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 MP2=FULL/TZVP
ABC
1.38755 0.34316 0.30294

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/TZVP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.535
O2 0.000 1.168 -0.247
O3 0.000 -1.168 -0.247
H4 -0.890 -0.077 1.158
H5 0.890 0.077 1.158
H6 -0.798 1.137 -0.788
H7 0.798 -1.137 -0.788

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.40561.40561.08921.08921.91871.9187
O21.40562.33562.07741.98940.96442.4984
O31.40562.33561.98942.07742.49840.9644
H41.08922.07741.98941.78712.29582.7861
H51.08921.98942.07741.78712.78612.2958
H61.91870.96442.49842.29582.78612.7780
H71.91872.49840.96442.78612.29582.7780

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 106.623 C1 O3 H7 106.623
O2 C1 O3 112.363 O2 C1 H4 112.131
O2 C1 H5 105.057 O3 C1 H4 105.057
O3 C1 H5 112.131 H4 C1 H5 110.247
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability