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

using model chemistry: B2PLYP/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 B2PLYP/cc-pVTZ
 hartrees
Energy at 0K-190.879518
Energy at 298.15K-190.882625
HF Energy-190.664715
Nuclear repulsion energy69.024874
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 B2PLYP/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 3904 3746 78.31      
2 A 3739 3588 162.56      
3 A 3043 2920 62.35      
4 A 2957 2837 66.79      
5 A 1773 1701 75.67      
6 A 1671 1603 54.96      
7 A 1538 1475 20.24      
8 A 1281 1229 7.82      
9 A 1222 1173 4.35      
10 A 563 540 173.38      
11 A 318 305 70.74      
12 A 210 202 26.06      
13 A 186 178 37.60      
14 A 151 145 60.60      
15 A 121 116 69.40      

Unscaled Zero Point Vibrational Energy (zpe) 11338.8 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 10878.4 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 B2PLYP/cc-pVTZ
ABC
1.26197 0.16833 0.15023

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.051 -0.480 -0.122
O2 1.814 0.114 -0.095
O3 -0.940 -0.678 -0.001
H4 2.201 -0.048 0.769
C5 -1.245 0.492 0.016
H6 -0.480 1.280 -0.015
H7 -2.298 0.809 0.038

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.96732.00461.51742.49732.33563.5928
O20.96732.86700.95983.08392.57444.1727
O32.00462.86703.29461.20962.01182.0147
H41.51740.95983.29463.56803.09284.6382
C52.49733.08391.20963.56801.09861.1005
H62.33562.57442.01183.09281.09861.8793
H73.59284.17272.01474.63821.10051.8793

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 103.884 H1 O3 C5 98.954
O2 H1 O3 147.361 O3 C5 H6 121.209
O3 C5 H7 121.342 H6 C5 H7 117.431
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.260      
2 O -0.496      
3 O -0.310      
4 H 0.226      
5 C 0.149      
6 H 0.080      
7 H 0.091      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.076 -0.294 0.135
y -0.294 3.708 -0.022
z 0.135 -0.022 2.472


<r2> (average value of r2) Å2
<r2> 75.124
(<r2>)1/2 8.667