return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: MP4=FULL/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP4=FULL/6-31G*
 hartrees
Energy at 0K-190.430108
Energy at 298.15K-190.435405
HF Energy-189.897615
Nuclear repulsion energy81.166538
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=FULL/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 3729 3585        
2 A 3062 2944        
3 A 1579 1518        
4 A 1426 1371        
5 A 1231 1184        
6 A 1059 1018        
7 A 580 558        
8 A 410 394        
9 B 3728 3585        
10 B 3119 2999        
11 B 1480 1424        
12 B 1404 1350        
13 B 1116 1073        
14 B 1033 993        
15 B 416 400        

Unscaled Zero Point Vibrational Energy (zpe) 12684.8 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 12197.7 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=FULL/6-31G*
ABC
1.37243 0.33987 0.30018

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.536
O2 0.000 1.173 -0.248
O3 0.000 -1.173 -0.248
H4 -0.895 -0.080 1.168
H5 0.895 0.080 1.168
H6 -0.808 1.141 -0.793
H7 0.808 -1.141 -0.793

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.41121.41121.09831.09831.92841.9284
O21.41122.34652.09211.99990.97452.5105
O31.41122.34651.99992.09212.51050.9745
H41.09832.09211.99991.79712.31112.8045
H51.09831.99992.09211.79712.80452.3111
H61.92840.97452.51052.31112.80452.7951
H71.92842.51050.97452.80452.31112.7951

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 106.420 C1 O3 H7 106.420
O2 C1 O3 112.482 O2 C1 H4 112.359
O2 C1 H5 104.992 O3 C1 H4 104.992
O3 C1 H5 112.359 H4 C1 H5 109.796
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability