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

using model chemistry: PBEPBEultrafine_cp_opt/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_cp_opt/6-311+G(3df,2pd)
 hartrees
Energy at 0K-190.800426
Energy at 298.15K-190.803151
Nuclear repulsion energy31.093757
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/6-311+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 3802 3764 77.20      
2 A 3580 3544 300.36      
3 A 2902 2873 72.90      
4 A 2831 2803 72.02      
5 A 1749 1732 90.01      
6 A 1609 1593 75.91      
7 A 1479 1464 18.00      
8 A 1230 1218 6.62      
9 A 1161 1149 6.85      
10 A 519 514 79.68      
11 A 364 361 110.49      
12 A 179 178 31.17      
13 A 167 166 0.03      
14 A 75 75 37.88      
15 A 26 26 132.09      

Unscaled Zero Point Vibrational Energy (zpe) 10836.8 cm-1
Scaled (by 0.99) Zero Point Vibrational Energy (zpe) 10728.4 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/6-311+G(3df,2pd)
ABC
1.33648 0.16181 0.14439

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.056 -0.383 -0.009
O2 1.849 0.189 -0.020
O3 -0.895 -0.673 -0.005
H4 2.591 -0.414 0.131
C5 -1.354 0.450 0.007
H6 -0.699 1.349 0.027
H7 -2.455 0.625 -0.001

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.97801.97241.54202.54992.46533.6522
O20.97802.87680.96763.21462.80014.3262
O31.97242.87683.49851.21282.03162.0288
H41.54200.96763.49854.04083.73385.1534
C52.54993.21461.21284.04081.11331.1142
H62.46532.80012.03163.73381.11331.8998
H73.65224.32622.02885.15341.11421.8998

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 104.845 H1 O3 C5 103.789
O2 H1 O3 152.703 O3 C5 H6 121.657
O3 C5 H7 121.287 H6 C5 H7 117.056
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine_cp_opt/6-311+G(3df,2pd) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.463      
4 H 0.000      
5 C 0.353      
6 H 0.055      
7 H 0.055      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.478 0.389 0.276 1.553
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 2.824 -0.229 0.008
y -0.229 3.270 0.031
z 0.008 0.031 1.851


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