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

using model chemistry: MP2/SDD

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/SDD
 hartrees
Energy at 0K-190.194725
Energy at 298.15K-190.199922
HF Energy-189.863037
Nuclear repulsion energy78.664924
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/SDD
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 3665 3538 13.37      
2 A 3107 2999 65.77      
3 A 1542 1488 0.16      
4 A 1373 1325 2.94      
5 A 1183 1142 2.96      
6 A 954 921 116.57      
7 A 539 520 179.45      
8 A 413 399 36.91      
9 B 3666 3538 20.81      
10 B 3197 3087 41.23      
11 B 1455 1404 45.24      
12 B 1348 1301 28.64      
13 B 1001 966 122.02      
14 B 977 943 166.91      
15 B 392 378 266.82      

Unscaled Zero Point Vibrational Energy (zpe) 12405.7 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 11975.2 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/SDD
ABC
1.31417 0.31419 0.27798

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.560
O2 0.000 1.217 -0.255
O3 0.000 -1.217 -0.255
H4 -0.908 -0.090 1.171
H5 0.908 0.090 1.171
H6 -0.814 1.269 -0.807
H7 0.814 -1.269 -0.807

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.46481.46481.09781.09782.03522.0352
O21.46482.43432.13702.03150.98492.6739
O31.46482.43432.03152.13702.67390.9849
H41.09782.13702.03151.82412.40192.8751
H51.09782.03152.13701.82412.87512.4019
H62.03520.98492.67392.40192.87513.0160
H72.03522.67390.98492.87512.40193.0160

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 110.835 C1 O3 H7 110.835
O2 C1 O3 112.393 O2 C1 H4 112.212
O2 C1 H5 103.965 O3 C1 H4 103.965
O3 C1 H5 112.212 H4 C1 H5 112.354
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability