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

using model chemistry: QCISD/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-190.564607
Energy at 298.15K-190.569889
HF Energy-189.928485
Nuclear repulsion energy81.837173
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/6-31G(2df,p)
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 3887 3682 22.73      
2 A 3080 2918 53.67      
3 A 1569 1487 0.98      
4 A 1437 1362 4.56      
5 A 1243 1177 1.03      
6 A 1077 1021 98.55      
7 A 577 547 75.07      
8 A 392 372 44.42      
9 B 3886 3681 39.16      
10 B 3130 2966 48.42      
11 B 1489 1411 76.43      
12 B 1414 1340 26.50      
13 B 1143 1083 199.22      
14 B 1039 984 25.08      
15 B 394 374 174.26      

Unscaled Zero Point Vibrational Energy (zpe) 12879.1 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 12201.6 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/6-31G(2df,p)
ABC
1.39717 0.34482 0.30480

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.530
O2 0.000 1.164 -0.247
O3 0.000 -1.164 -0.247
H4 -0.890 -0.074 1.162
H5 0.890 0.074 1.162
H6 -0.801 1.143 -0.775
H7 0.801 -1.143 -0.775

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.39961.39961.09451.09451.91051.9105
O21.39962.32832.07661.99150.95972.4983
O31.39962.32831.99152.07662.49830.9597
H41.09452.07661.99151.78672.28942.7846
H51.09451.99152.07661.78672.78462.2894
H61.91050.95972.49832.28942.78462.7909
H71.91052.49830.95972.78462.28942.7909

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 106.656 C1 O3 H7 106.656
O2 C1 O3 112.564 O2 C1 H4 112.160
O2 C1 H5 105.316 O3 C1 H4 105.316
O3 C1 H5 112.160 H4 C1 H5 109.425
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability