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

using model chemistry: B3LYP/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 B3LYP/6-31G*
 hartrees
Energy at 0K-190.920279
Energy at 298.15K-190.923574
Counterpoise corrected energy-190.916287
CP Energy at 298.15K-190.919012
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy69.134507
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 B3LYP/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 3813 3661 58.97      
2 A 3664 3518 125.51      
3 A 3046 2925 63.85      
4 A 2957 2840 71.48      
5 A 1819 1747 90.10      
6 A 1735 1666 68.19      
7 A 1545 1483 13.83      
8 A 1282 1231 5.78      
9 A 1215 1167 2.64      
10 A 614 590 246.46      
11 A 327 314 69.36      
12 A 237 228 53.32      
13 A 202 194 36.51      
14 A 186 179 88.31      
15 A 155 149 29.12      

Unscaled Zero Point Vibrational Energy (zpe) 11398.1 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 10945.6 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 B3LYP/6-31G*
ABC
1.22852 0.17243 0.15323

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.045 -0.482 -0.134
O2 1.814 0.116 -0.095
O3 -0.943 -0.681 -0.000
H4 2.202 -0.065 0.774
C5 -1.241 0.494 0.013
H6 -0.471 1.285 0.002
H7 -2.299 0.820 0.038

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.97492.00221.52812.49032.33153.5929
O20.97492.87150.96853.08092.56834.1756
O32.00222.87153.29641.21282.02202.0240
H41.52810.96853.29643.57023.09174.6460
C52.49033.08091.21283.57021.10431.1074
H62.33152.56832.02203.09171.10431.8872
H73.59294.17562.02404.64601.10741.8872

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 103.689 H1 O3 C5 98.546
O2 H1 O3 147.341 O3 C5 H6 121.458
O3 C5 H7 121.400 H6 C5 H7 117.142
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.408      
2 O -0.812      
3 O -0.346      
4 H 0.381      
5 C 0.071      
6 H 0.161      
7 H 0.137      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.556 0.983 1.461 2.350
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.094 -4.150 3.614
y -4.150 -18.439 0.005
z 3.614 0.005 -17.028
Traceless
 xyz
x -0.361 -4.150 3.614
y -4.150 -0.878 0.005
z 3.614 0.005 1.239
Polar
3z2-r22.477
x2-y20.345
xy-4.150
xz3.614
yz0.005


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.613 -0.273 0.200
y -0.273 3.138 -0.047
z 0.200 -0.047 1.805


<r2> (average value of r2) Å2
<r2> 73.826
(<r2>)1/2 8.592