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(T)=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(T)=FULL/TZVP
 hartrees
Energy at 0K-190.633225
Energy at 298.15K-190.638552
HF Energy-189.983824
Nuclear repulsion energy81.484703
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)=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 3830 3662        
2 A 3068 2933        
3 A 1553 1484        
4 A 1426 1363        
5 A 1233 1179        
6 A 1055 1008        
7 A 591 565        
8 A 417 398        
9 B 3829 3661        
10 B 3124 2986        
11 B 1495 1429        
12 B 1395 1334        
13 B 1096 1048        
14 B 1044 998        
15 B 412 394        

Unscaled Zero Point Vibrational Energy (zpe) 12782.9 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 12220.5 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(T)=FULL/TZVP
ABC
1.37854 0.34269 0.30223

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.537
O2 0.000 1.169 -0.248
O3 0.000 -1.169 -0.248
H4 -0.892 -0.075 1.163
H5 0.892 0.075 1.163
H6 -0.798 1.135 -0.790
H7 0.798 -1.135 -0.790

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5 H6 H7
C11.40811.40811.09241.09241.92031.9203
O21.40812.33742.08201.99570.96492.4978
O31.40812.33741.99572.08202.49780.9649
H41.09242.08201.99571.79132.29972.7918
H51.09241.99572.08201.79132.79182.2997
H61.92030.96492.49782.29972.79182.7751
H71.92032.49780.96492.79182.29972.7751

picture of methanediol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H6 106.541 C1 O3 H7 106.541
O2 C1 O3 112.193 O2 C1 H4 112.120
O2 C1 H5 105.201 O3 C1 H4 105.201
O3 C1 H5 112.120 H4 C1 H5 110.141
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability