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

using model chemistry: CCSD(T)/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at CCSD(T)/TZVP
 hartrees
Energy at 0K-190.580080
Energy at 298.15K-190.585406
HF Energy-189.983718
Nuclear repulsion energy81.439359
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 CCSD(T)/TZVP
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 3828 3685        
2 A 3069 2954        
3 A 1552 1493        
4 A 1425 1372        
5 A 1232 1186        
6 A 1053 1014        
7 A 590 568        
8 A 417 401        
9 B 3827 3684        
10 B 3124 3007        
11 B 1493 1437        
12 B 1395 1343        
13 B 1094 1053        
14 B 1044 1005        
15 B 413 397        

Unscaled Zero Point Vibrational Energy (zpe) 12777.6 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 12298.4 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 CCSD(T)/TZVP
ABC
1.37686 0.34229 0.30187

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/TZVP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.538
O2 0.000 1.169 -0.248
O3 0.000 -1.169 -0.248
H4 -0.893 -0.075 1.163
H5 0.893 0.075 1.163
H6 -0.798 1.135 -0.791
H7 0.798 -1.135 -0.791

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.40911.40911.09311.09311.92081.9208
O21.40912.33892.08341.99690.96502.4984
O31.40912.33891.99692.08342.49840.9650
H41.09312.08341.99691.79272.30072.7928
H51.09311.99692.08341.79272.79282.3007
H61.92080.96502.49842.30072.79282.7748
H71.92082.49840.96502.79282.30072.7748

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 106.507 C1 O3 H7 106.507
O2 C1 O3 112.186 O2 C1 H4 112.121
O2 C1 H5 105.189 O3 C1 H4 105.189
O3 C1 H5 112.121 H4 C1 H5 110.171
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability