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

using model chemistry: QCISD(T)/cc-pVTZ

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(T)/cc-pVTZ
 hartrees
Energy at 0K-190.689376
Energy at 298.15K-190.694603
HF Energy-189.988057
Nuclear repulsion energy81.527213
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(T)/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3833 3636        
2 A 3049 2893        
3 A 1544 1465        
4 A 1411 1339        
5 A 1222 1159        
6 A 1051 997        
7 A 565 536        
8 A 373 354        
9 B 3832 3635        
10 B 3100 2940        
11 B 1461 1386        
12 B 1388 1317        
13 B 1105 1048        
14 B 1020 967        
15 B 374 355        

Unscaled Zero Point Vibrational Energy (zpe) 12664.5 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 12013.6 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(T)/cc-pVTZ
ABC
1.39637 0.34073 0.30174

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.531
O2 0.000 1.171 -0.247
O3 0.000 -1.171 -0.247
H4 -0.890 -0.073 1.159
H5 0.890 0.073 1.159
H6 -0.807 1.157 -0.772
H7 0.807 -1.157 -0.772

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.40591.40591.09191.09191.91981.9198
O21.40592.34182.07801.99360.96242.5187
O31.40592.34181.99362.07802.51870.9624
H41.09192.07801.99361.78632.29082.7894
H51.09191.99362.07801.78632.78942.2908
H61.91980.96242.51872.29082.78942.8207
H71.91982.51870.96242.78942.29082.8207

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 106.821 C1 O3 H7 106.821
O2 C1 O3 112.788 O2 C1 H4 111.986
O2 C1 H5 105.214 O3 C1 H4 105.214
O3 C1 H5 111.986 H4 C1 H5 109.761
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability