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 H2OH2CO (water formaldehyde dimer)

using model chemistry: B97D3/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 B97D3/aug-cc-pVTZ
 hartrees
Energy at 0K-190.918347
Energy at 298.15K-190.921069
HF Energy-190.918347
Nuclear repulsion energy67.850443
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 B97D3/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 3808 3749 81.67      
2 A 3607 3552 263.97      
3 A 2908 2864 89.01      
4 A 2843 2800 82.63      
5 A 1747 1720 97.47      
6 A 1632 1607 68.52      
7 A 1499 1476 19.90      
8 A 1244 1225 7.92      
9 A 1173 1155 5.82      
10 A 496 488 76.34      
11 A 354 348 95.67      
12 A 170 168 28.96      
13 A 150 148 0.05      
14 A 86 85 35.32      
15 A 44 43 121.78      

Unscaled Zero Point Vibrational Energy (zpe) 10880.2 cm-1
Scaled (by 0.9847) Zero Point Vibrational Energy (zpe) 10713.8 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 B97D3/aug-cc-pVTZ
ABC
1.36527 0.15503 0.13929

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/aug-cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.087 -0.353 -0.011
O2 1.893 0.191 -0.021
O3 -0.901 -0.666 -0.006
H4 2.611 -0.430 0.146
C5 -1.394 0.440 0.008
H6 -0.771 1.358 0.027
H7 -2.495 0.583 0.003

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.97282.01241.53472.60442.52563.7022
O20.97282.92260.96393.29622.90824.4055
O32.01242.92263.52391.21072.02782.0249
H41.53470.96393.52394.10083.82715.2079
C52.60443.29621.21074.10081.10921.1105
H62.52562.90822.02783.82711.10921.8904
H73.70224.40552.02495.20791.11051.8904

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 104.827 H1 O3 C5 105.075
O2 H1 O3 154.902 O3 C5 H6 121.818
O3 C5 H7 121.405 H6 C5 H7 116.777
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.277      
2 O -0.408      
3 O -0.438      
4 H 0.151      
5 C -0.144      
6 H 0.296      
7 H 0.267      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.596 0.414 0.294 1.675
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.873 -5.981 0.799
y -5.981 -18.982 -0.185
z 0.799 -0.185 -19.386
Traceless
 xyz
x 4.312 -5.981 0.799
y -5.981 -1.852 -0.185
z 0.799 -0.185 -2.459
Polar
3z2-r2-4.919
x2-y24.109
xy-5.981
xz0.799
yz-0.185


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.068 -0.381 0.012
y -0.381 4.515 0.016
z 0.012 0.016 3.334


<r2> (average value of r2) Å2
<r2> 80.241
(<r2>)1/2 8.958