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

using model chemistry: PBEPBEultrafine/6-311+G(3df,2pd)

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/6-311+G(3df,2pd)
 hartrees
Energy at 0K-190.800882
Energy at 298.15K-190.803667
Counterpoise corrected energy-190.800426
CP Energy at 298.15K-190.803151
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy68.351941
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/6-311+G(3df,2pd)
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 3801 3763 77.53      
2 A 3574 3538 313.35      
3 A 2903 2874 72.40      
4 A 2832 2804 73.00      
5 A 1749 1731 90.96      
6 A 1612 1596 71.22      
7 A 1478 1463 18.33      
8 A 1230 1217 6.71      
9 A 1161 1150 6.70      
10 A 540 534 85.83      
11 A 368 364 104.63      
12 A 185 183 30.62      
13 A 173 171 0.11      
14 A 76 75 37.70      
15 A 38 38 126.51      

Unscaled Zero Point Vibrational Energy (zpe) 10858.4 cm-1
Scaled (by 0.99) Zero Point Vibrational Energy (zpe) 10749.8 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 PBEPBEultrafine/6-311+G(3df,2pd)
ABC
1.34187 0.16215 0.14484

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-311+G(3df,2pd)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.046 -0.372 -0.016
O2 1.849 0.187 -0.033
O3 -0.887 -0.671 -0.008
H4 2.569 -0.405 0.225
C5 -1.357 0.447 0.012
H6 -0.710 1.352 0.043
H7 -2.459 0.611 0.000

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.97851.95651.54212.53952.46173.6408
O20.97852.86770.96773.21712.81244.3290
O31.95652.86773.47441.21302.03142.0287
H41.54210.96773.47444.02363.72475.1351
C52.53953.21711.21304.02361.11321.1141
H62.46172.81242.03143.72471.11321.9001
H73.64084.32902.02875.13511.11411.9001

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 104.818 H1 O3 C5 104.019
O2 H1 O3 153.905 O3 C5 H6 121.624
O3 C5 H7 121.278 H6 C5 H7 117.098
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-311+G(3df,2pd) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.248      
2 O -0.409      
3 O -0.478      
4 H 0.148      
5 C 0.350      
6 H 0.084      
7 H 0.057      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.567 0.413 0.467 1.686
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 4.947 -0.373 0.013
y -0.373 4.280 0.031
z 0.013 0.031 3.102


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