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

using model chemistry: HF/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF/TZVP
 hartrees
Energy at 0K-189.974163
Energy at 298.15K-189.976878
HF Energy-189.974163
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy68.465625
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 HF/TZVP
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 4207 3822 132.96      
2 A 4078 3705 110.27      
3 A 3206 2913 72.24      
4 A 3120 2835 52.27      
5 A 1984 1803 160.69      
6 A 1742 1583 99.64      
7 A 1661 1509 28.47      
8 A 1384 1257 17.76      
9 A 1350 1226 1.17      
10 A 467 424 172.50      
11 A 339 308 122.58      
12 A 159 145 30.94      
13 A 154 140 0.30      
14 A 74 68 95.22      
15 A 64 58 141.13      

Unscaled Zero Point Vibrational Energy (zpe) 11993.9 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 10897.7 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 HF/TZVP
ABC
1.40885 0.15294 0.13803

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/TZVP

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.142 -0.432 -0.059
O2 1.884 0.156 -0.058
O3 -0.954 -0.661 -0.009
H4 2.566 -0.271 0.429
C5 -1.346 0.458 0.018
H6 -0.660 1.304 0.040
H7 -2.412 0.689 0.021

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H10.94692.10991.51382.64342.50453.7278
O20.94692.95430.94103.24452.79244.3295
O32.10992.95433.56911.18511.98741.9864
H41.51380.94103.56914.00003.61055.0859
C52.64343.24451.18514.00001.08961.0911
H62.50452.79241.98743.61051.08961.8572
H73.72784.32951.98645.08591.09111.8572

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 106.609 H1 O3 C5 103.080
O2 H1 O3 147.743 O3 C5 H6 121.728
O3 C5 H7 121.494 H6 C5 H7 116.779
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.292      
2 O -0.577      
3 O -0.397      
4 H 0.274      
5 C 0.264      
6 H 0.081      
7 H 0.064      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.297 0.583 0.356 1.466
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -13.255 -7.092 0.959
y -7.092 -18.750 -0.124
z 0.959 -0.124 -18.867
Traceless
 xyz
x 5.554 -7.092 0.959
y -7.092 -2.689 -0.124
z 0.959 -0.124 -2.865
Polar
3z2-r2-5.729
x2-y25.495
xy-7.092
xz0.959
yz-0.124


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.500 -0.425 0.047
y -0.425 3.414 -0.006
z 0.047 -0.006 1.854


<r2> (average value of r2) Å2
<r2> 80.388
(<r2>)1/2 8.966