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

using model chemistry: CCD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at CCD/3-21G*
 hartrees
Energy at 0K-189.188677
Energy at 298.15K-189.193925
HF Energy-188.843953
Nuclear repulsion energy79.429551
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 CCD/3-21G*
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 3516 3363 0.09      
2 A 3051 2919 52.21      
3 A 1603 1534 2.00      
4 A 1442 1379 4.16      
5 A 1237 1183 2.37      
6 A 983 940 106.08      
7 A 567 542 142.59      
8 A 397 379 23.72      
9 B 3517 3364 1.33      
10 B 3094 2959 56.78      
11 B 1476 1412 54.19      
12 B 1412 1350 21.66      
13 B 1063 1017 127.99      
14 B 1016 972 53.80      
15 B 399 382 233.15      

Unscaled Zero Point Vibrational Energy (zpe) 12385.7 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 11846.9 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 CCD/3-21G*
ABC
1.33476 0.32229 0.28488

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/3-21G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.548
O2 0.000 1.206 -0.251
O3 0.000 -1.206 -0.251
H4 -0.892 -0.092 1.179
H5 0.892 0.092 1.179
H6 -0.817 1.189 -0.814
H7 0.817 -1.189 -0.814

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.44641.44641.09671.09671.98411.9841
O21.44642.41102.12712.02030.99212.5919
O31.44642.41102.02032.12712.59190.9921
H41.09672.12712.02031.79422.37042.8455
H51.09672.02032.12711.79422.84552.3704
H61.98410.99212.59192.37042.84552.8851
H71.98412.59190.99212.84552.37042.8851

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 107.446 C1 O3 H7 107.446
O2 C1 O3 112.911 O2 C1 H4 112.809
O2 C1 H5 104.359 O3 C1 H4 104.359
O3 C1 H5 112.809 H4 C1 H5 109.777
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability