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: QCISD/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at QCISD/6-311G**
 hartrees
Energy at 0K-190.542777
Energy at 298.15K-190.548115
HF Energy-189.965571
Nuclear repulsion energy81.735117
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 QCISD/6-311G**
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 3898 3719 21.82      
2 A 3068 2927 65.76      
3 A 1563 1491 2.12      
4 A 1441 1375 5.05      
5 A 1245 1188 1.65      
6 A 1079 1030 107.95      
7 A 593 566 94.39      
8 A 414 395 32.24      
9 B 3897 3718 33.85      
10 B 3117 2974 58.52      
11 B 1499 1430 85.40      
12 B 1410 1345 20.35      
13 B 1140 1088 212.79      
14 B 1051 1003 14.66      
15 B 412 393 192.39      

Unscaled Zero Point Vibrational Energy (zpe) 12912.7 cm-1
Scaled (by 0.9541) Zero Point Vibrational Energy (zpe) 12320.0 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 QCISD/6-311G**
ABC
1.38779 0.34465 0.30411

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.533
O2 0.000 1.166 -0.247
O3 0.000 -1.166 -0.247
H4 -0.893 -0.075 1.164
H5 0.893 0.075 1.164
H6 -0.794 1.127 -0.785
H7 0.794 -1.127 -0.785

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.40291.40291.09601.09601.90731.9073
O21.40292.33132.08081.99490.95962.4847
O31.40292.33131.99492.08082.48470.9596
H41.09602.08081.99491.79232.29232.7841
H51.09601.99492.08081.79232.78412.2923
H61.90730.95962.48472.29232.78412.7564
H71.90732.48470.95962.78412.29232.7564

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 106.151 C1 O3 H7 106.151
O2 C1 O3 112.375 O2 C1 H4 112.167
O2 C1 H5 105.274 O3 C1 H4 105.274
O3 C1 H5 112.167 H4 C1 H5 109.702
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability