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

using model chemistry: PBEPBEultrafine_cp_opt/6-31G*

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/6-31G*
 hartrees
Energy at 0K-190.697173
Energy at 298.15K-190.700027
Nuclear repulsion energy30.916322
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/6-31G*
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 3718 3665 45.91      
2 A 3532 3481 186.33      
3 A 2920 2878 110.63      
4 A 2856 2815 65.57      
5 A 1776 1751 78.31      
6 A 1708 1684 74.31      
7 A 1509 1487 10.76      
8 A 1244 1226 6.45      
9 A 1159 1143 3.60      
10 A 532 524 151.66      
11 A 353 348 109.44      
12 A 188 186 24.65      
13 A 178 175 4.24      
14 A 85 83 107.32      
15 A 77 76 58.19      

Unscaled Zero Point Vibrational Energy (zpe) 10917.5 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 10761.4 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 PBEPBEultrafine_cp_opt/6-31G*
ABC
1.28670 0.15947 0.14248

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.056 -0.375 -0.051
O2 1.872 0.175 -0.060
O3 -0.920 -0.681 -0.013
H4 2.512 -0.375 0.431
C5 -1.346 0.462 0.021
H6 -0.665 1.347 0.071
H7 -2.443 0.682 0.003

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.98422.00011.53402.54462.43783.6552
O20.98422.92110.97573.23212.79844.3452
O32.00012.92113.47441.22022.04562.0436
H41.53400.97573.47443.96893.63165.0841
C52.54463.23211.22023.96891.11751.1187
H62.43782.79842.04563.63161.11751.8987
H73.65524.34522.04365.08411.11871.8987

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 103.010 H1 O3 C5 101.648
O2 H1 O3 154.848 O3 C5 H6 122.042
O3 C5 H7 121.733 H6 C5 H7 116.225
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine_cp_opt/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.296      
4 H 0.000      
5 C 0.037      
6 H 0.130      
7 H 0.129      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.573 0.268 0.911 1.837
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 2.218 -0.132 -0.026
y -0.132 2.749 0.004
z -0.026 0.004 1.027


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