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

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-190.540899
Energy at 298.15K-190.546177
HF Energy-189.928164
Nuclear repulsion energy81.782264
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 MP2/6-31G(2df,p)
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 3871 3656 29.15      
2 A 3098 2926 52.58      
3 A 1567 1480 0.78      
4 A 1426 1347 3.45      
5 A 1236 1168 0.81      
6 A 1066 1007 99.37      
7 A 576 544 75.20      
8 A 393 371 41.49      
9 B 3869 3655 47.54      
10 B 3160 2985 44.07      
11 B 1478 1396 62.66      
12 B 1399 1322 27.92      
13 B 1127 1065 209.54      
14 B 1036 978 25.29      
15 B 397 375 177.87      

Unscaled Zero Point Vibrational Energy (zpe) 12849.8 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 12136.6 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 MP2/6-31G(2df,p)
ABC
1.39862 0.34399 0.30423

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.530
O2 0.000 1.166 -0.246
O3 0.000 -1.166 -0.246
H4 -0.890 -0.078 1.160
H5 0.890 0.078 1.160
H6 -0.801 1.136 -0.777
H7 0.801 -1.136 -0.777

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.40081.40081.09331.09331.90801.9080
O21.40082.33232.07801.98870.96172.4946
O31.40082.33231.98872.07802.49460.9617
H41.09332.07801.98871.78642.28802.7809
H51.09331.98872.07801.78642.78092.2880
H61.90800.96172.49462.28802.78092.7801
H71.90802.49460.96172.78092.28802.7801

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 106.238 C1 O3 H7 106.238
O2 C1 O3 112.707 O2 C1 H4 112.259
O2 C1 H5 105.086 O3 C1 H4 105.086
O3 C1 H5 112.259 H4 C1 H5 109.563
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability