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

using model chemistry: MP2/CEP-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 MP2/CEP-31G*
 hartrees
Energy at 0K-39.665499
Energy at 298.15K-39.670780
HF Energy-39.194031
Nuclear repulsion energy48.334268
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/CEP-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 3791 3600 22.59      
2 A 3120 2963 73.70      
3 A 1553 1475 1.72      
4 A 1410 1339 4.62      
5 A 1217 1155 3.70      
6 A 1050 997 112.12      
7 A 570 541 111.06      
8 A 417 396 51.28      
9 B 3791 3599 38.45      
10 B 3202 3040 58.33      
11 B 1476 1401 91.86      
12 B 1384 1314 25.38      
13 B 1099 1043 276.54      
14 B 1019 968 6.92      
15 B 410 389 218.93      

Unscaled Zero Point Vibrational Energy (zpe) 12754.0 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 12108.6 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/CEP-31G*
ABC
1.36192 0.33174 0.29421

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.539
O2 0.000 1.186 -0.250
O3 0.000 -1.186 -0.250
H4 -0.906 -0.080 1.164
H5 0.906 0.080 1.164
H6 -0.823 1.175 -0.778
H7 0.823 -1.175 -0.778

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.42481.42481.10301.10301.94741.9474
O21.42482.37212.10302.01070.97802.5553
O31.42482.37212.01072.10302.55530.9780
H41.10302.10302.01071.81852.31322.8209
H51.10302.01072.10301.81852.82092.3132
H61.94740.97802.55532.31322.82092.8690
H71.94742.55530.97802.82092.31322.8690

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 106.813 C1 O3 H7 106.813
O2 C1 O3 112.699 O2 C1 H4 111.968
O2 C1 H5 104.674 O3 C1 H4 104.674
O3 C1 H5 111.968 H4 C1 H5 111.038
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability