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

using model chemistry: CCSD(T)/cc-pVDZ

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)/cc-pVDZ
 hartrees
Energy at 0K-190.480379
Energy at 298.15K-190.485674
HF Energy-189.922616
Nuclear repulsion energy81.296686
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)/cc-pVDZ
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 3810 3729        
2 A 3035 2971        
3 A 1532 1499        
4 A 1420 1390        
5 A 1222 1196        
6 A 1061 1038        
7 A 579 567        
8 A 396 388        
9 B 3809 3729        
10 B 3087 3021        
11 B 1470 1438        
12 B 1389 1359        
13 B 1129 1105        
14 B 1026 1004        
15 B 409 400        

Unscaled Zero Point Vibrational Energy (zpe) 12685.7 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 12416.7 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)/cc-pVDZ
ABC
1.37749 0.34082 0.30125

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.532
O2 0.000 1.172 -0.248
O3 0.000 -1.172 -0.248
H4 -0.899 -0.080 1.174
H5 0.899 0.080 1.174
H6 -0.804 1.126 -0.787
H7 0.804 -1.126 -0.787

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.40761.40761.10831.10831.91091.9109
O21.40762.34452.09732.00590.96942.4936
O31.40762.34452.00592.09732.49360.9694
H41.10832.09732.00591.80592.30372.8002
H51.10832.00592.09731.80592.80022.3037
H61.91090.96942.49362.30372.80022.7671
H71.91092.49360.96942.80022.30372.7671

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 105.527 C1 O3 H7 105.527
O2 C1 O3 112.770 O2 C1 H4 112.401
O2 C1 H5 105.125 O3 C1 H4 105.125
O3 C1 H5 112.401 H4 C1 H5 109.123
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability