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

using model chemistry: PBEPBEultrafine_cp_opt/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at PBEPBEultrafine_cp_opt/6-31+G**
 hartrees
Energy at 0K-190.735244
Energy at 298.15K-190.737998
Nuclear repulsion energy30.879838
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 PBEPBEultrafine_cp_opt/6-31+G**
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 3807 3763 87.19      
2 A 3576 3536 276.96      
3 A 2939 2906 77.54      
4 A 2861 2828 64.43      
5 A 1747 1727 92.55      
6 A 1590 1572 99.95      
7 A 1485 1468 14.94      
8 A 1228 1214 4.92      
9 A 1155 1142 7.81      
10 A 519 513 117.82      
11 A 366 362 144.88      
12 A 184 182 33.31      
13 A 172 170 0.07      
14 A 77 76 47.57      
15 A 34 33 175.04      

Unscaled Zero Point Vibrational Energy (zpe) 10869.9 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 10746.0 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 PBEPBEultrafine_cp_opt/6-31+G**
ABC
1.30873 0.16239 0.14447

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine_cp_opt/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.059 -0.403 -0.000
O2 1.843 0.188 -0.000
O3 -0.901 -0.681 -0.000
H4 2.615 -0.401 0.000
C5 -1.348 0.458 0.000
H6 -0.677 1.349 0.000
H7 -2.448 0.647 -0.000

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.98181.97961.55642.55612.46603.6604
O20.98182.87840.97143.20232.77454.3154
O31.97962.87843.52741.22352.04202.0384
H41.55640.97143.52744.05533.72855.1705
C52.55613.20231.22354.05531.11511.1161
H62.46602.77452.04203.72851.11511.9052
H73.66044.31542.03845.17051.11611.9052

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 105.658 H1 O3 C5 103.340
O2 H1 O3 151.088 O3 C5 H6 121.592
O3 C5 H7 121.137 H6 C5 H7 117.271
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine_cp_opt/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.279      
4 H 0.000      
5 C 0.023      
6 H 0.128      
7 H 0.128      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.384 0.253 0.001 1.407
CHELPG        
AIM        
ESP        


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 2.539 0.287 -0.000
y 0.287 3.173 0.000
z -0.000 0.000 1.385


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000