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

using model chemistry: MP4/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP4/aug-cc-pVDZ
 hartrees
Energy at 0K-190.540921
Energy at 298.15K-190.546109
HF Energy-189.942907
Nuclear repulsion energy80.665398
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 MP4/6-31G*
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 3728 3641        
2 A 3061 2991        
3 A 1578 1541        
4 A 1425 1392        
5 A 1229 1201        
6 A 1057 1033        
7 A 579 566        
8 A 409 400        
9 B 3727 3641        
10 B 3119 3047        
11 B 1479 1445        
12 B 1403 1371        
13 B 1114 1088        
14 B 1032 1008        
15 B 416 406        

Unscaled Zero Point Vibrational Energy (zpe) 12677.1 cm-1
Scaled (by 0.9769) Zero Point Vibrational Energy (zpe) 12384.3 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 MP4/aug-cc-pVDZ
ABC
1.36465 0.33364 0.29537

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/aug-cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.538
O2 0.000 1.183 -0.250
O3 0.000 -1.183 -0.250
H4 -0.904 -0.077 1.168
H5 0.904 0.077 1.168
H6 -0.812 1.172 -0.780
H7 0.812 -1.172 -0.780

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.42191.42191.10411.10411.94231.9423
O21.42192.36602.10132.01330.96952.5471
O31.42192.36602.01332.10132.54710.9695
H41.10412.10132.01331.81372.31632.8179
H51.10412.01332.10131.81372.81792.3163
H61.94230.96952.54712.31632.81792.8518
H71.94232.54710.96952.81792.31632.8518

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 107.106 C1 O3 H7 107.106
O2 C1 O3 112.614 O2 C1 H4 111.969
O2 C1 H5 104.996 O3 C1 H4 104.996
O3 C1 H5 111.969 H4 C1 H5 110.442
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability