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All results from a given calculation for H2OH2CO (water formaldehyde dimer)

using model chemistry: PBEPBE_cp_opt/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at PBEPBE_cp_opt/aug-cc-pVTZ
 hartrees
Energy at 0K-190.805003
Energy at 298.15K-190.807818
Nuclear repulsion energy 
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 PBEPBE_cp_opt/aug-cc-pVTZ
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 3775 3738 76.29      
2 A 3545 3509 321.09      
3 A 2898 2869 72.95      
4 A 2830 2802 74.93      
5 A 1741 1723 90.95      
6 A 1608 1592 71.59      
7 A 1476 1461 19.08      
8 A 1226 1214 6.66      
9 A 1158 1147 6.80      
10 A 526 520 72.48      
11 A 366 362 101.07      
12 A 182 180 31.15      
13 A 168 166 0.12      
14 A 75 74 36.98      
15 A 63 62 119.99      

Unscaled Zero Point Vibrational Energy (zpe) 10817.6 cm-1
Scaled (by 0.99) Zero Point Vibrational Energy (zpe) 10709.4 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 PBEPBE_cp_opt/aug-cc-pVTZ
ABC
1.34474 0.16150 0.14431

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE_cp_opt/aug-cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.049 -0.370 -0.011
O2 1.852 0.190 -0.029
O3 -0.884 -0.671 -0.007
H4 2.578 -0.412 0.195
C5 -1.363 0.445 0.011
H6 -0.723 1.355 0.041
H7 -2.466 0.601 -0.002

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.97991.95621.54422.54642.47383.6469
O20.97992.86890.96903.22622.82774.3385
O31.95622.86893.47831.21462.03302.0299
H41.54420.96903.47834.03813.74775.1492
C52.54643.22621.21464.03811.11321.1140
H62.47382.82772.03303.74771.11321.9001
H73.64694.33852.02995.14921.11401.9001

picture of water formaldehyde dimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 H4 104.809 H1 O3 C5 104.406
O2 H1 O3 153.938 O3 C5 H6 121.637
O3 C5 H7 121.254 H6 C5 H7 117.109
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability