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

using model chemistry: PBEPBE/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at PBEPBE/aug-cc-pVTZ
 hartrees
Energy at 0K-190.805107
Energy at 298.15K-190.807925
Counterpoise corrected energy-190.805003
CP Energy at 298.15K-190.807818
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy68.305217
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 PBEPBE/aug-cc-pVTZ
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 3775 3750 75.58      
2 A 3542 3519 323.51      
3 A 2898 2879 72.81      
4 A 2830 2811 75.19      
5 A 1740 1729 90.67      
6 A 1608 1597 72.67      
7 A 1476 1466 19.14      
8 A 1227 1219 6.70      
9 A 1159 1151 6.86      
10 A 528 525 71.65      
11 A 368 366 101.76      
12 A 182 180 31.10      
13 A 170 169 0.05      
14 A 76 76 39.89      
15 A 59 59 117.93      

Unscaled Zero Point Vibrational Energy (zpe) 10818.3 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 10748.0 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 PBEPBE/aug-cc-pVTZ
ABC
1.34314 0.16206 0.14472

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/aug-cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.046 -0.372 -0.011
O2 1.849 0.190 -0.027
O3 -0.884 -0.671 -0.007
H4 2.578 -0.414 0.180
C5 -1.360 0.446 0.010
H6 -0.718 1.354 0.037
H7 -2.463 0.604 -0.001

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.97991.95321.54442.54182.46843.6425
O20.97992.86540.96903.21972.81904.3319
O31.95322.86543.47661.21472.03282.0299
H41.54440.96903.47664.03483.74275.1461
C52.54183.21971.21474.03481.11311.1140
H62.46842.81902.03283.74271.11311.9002
H73.64254.33192.02995.14611.11401.9002

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 104.825 H1 O3 C5 104.282
O2 H1 O3 153.819 O3 C5 H6 121.625
O3 C5 H7 121.254 H6 C5 H7 117.120
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.244      
2 O -0.395      
3 O -0.395      
4 H 0.152      
5 C -0.305      
6 H 0.344      
7 H 0.356      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.574 0.422 0.368 1.671
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.071 -5.795 0.988
y -5.795 -19.163 -0.224
z 0.988 -0.224 -19.593
Traceless
 xyz
x 4.308 -5.795 0.988
y -5.795 -1.832 -0.224
z 0.988 -0.224 -2.476
Polar
3z2-r2-4.952
x2-y24.093
xy-5.795
xz0.988
yz-0.224


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.185 -0.385 0.019
y -0.385 4.560 0.021
z 0.019 0.021 3.380


<r2> (average value of r2) Å2
<r2> 77.867
(<r2>)1/2 8.824