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: CCSD=FULL/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=FULL/TZVP
 hartrees
Energy at 0K-190.615734
Energy at 298.15K-190.621083
HF Energy-189.984474
Nuclear repulsion energy81.711780
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=FULL/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 3870 3667 24.30      
2 A 3091 2929 58.70      
3 A 1568 1485 1.96      
4 A 1438 1363 4.25      
5 A 1245 1180 2.15      
6 A 1074 1018 108.98      
7 A 598 567 95.90      
8 A 423 401 39.11      
9 B 3869 3666 35.92      
10 B 3145 2980 45.29      
11 B 1509 1430 76.56      
12 B 1408 1334 23.06      
13 B 1121 1063 231.92      
14 B 1054 999 11.03      
15 B 414 392 197.92      

Unscaled Zero Point Vibrational Energy (zpe) 12913.5 cm-1
Scaled (by 0.9475) Zero Point Vibrational Energy (zpe) 12235.5 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=FULL/TZVP
ABC
1.38641 0.34463 0.30397

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/TZVP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.535
O2 0.000 1.165 -0.247
O3 0.000 -1.165 -0.247
H4 -0.890 -0.073 1.161
H5 0.890 0.073 1.161
H6 -0.796 1.140 -0.788
H7 0.796 -1.140 -0.788

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.40341.40341.09071.09071.91891.9189
O21.40342.32992.07571.99210.96222.4973
O31.40342.32991.99212.07572.49730.9622
H41.09072.07571.99211.78682.29712.7889
H51.09071.99212.07571.78682.78892.2971
H61.91890.96222.49732.29712.78892.7800
H71.91892.49730.96222.78892.29712.7800

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 106.942 C1 O3 H7 106.942
O2 C1 O3 112.212 O2 C1 H4 112.053
O2 C1 H5 105.328 O3 C1 H4 105.328
O3 C1 H5 112.053 H4 C1 H5 109.990
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability