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All results from a given calculation for H2OHCOOH (Water formic acid dimer 2)

using model chemistry: HF_cp/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 HF_cp/6-31G*
 hartrees
Energy at 0K-264.779301
Energy at 298.15K-264.771575
Nuclear repulsion energy 
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/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 4167 3744 114.63      
2 A 4046 3635 51.47      
3 A 4039 3629 140.83      
4 A 3358 3017 21.22      
5 A 2003 1800 484.77      
6 A 1844 1657 108.77      
7 A 1553 1395 13.16      
8 A 1448 1301 25.72      
9 A 1287 1156 289.95      
10 A 1212 1089 1.10      
11 A 728 654 214.50      
12 A 699 628 61.10      
13 A 520 467 315.87      
14 A 284 255 126.10      
15 A 162 146 85.72      
16 A 155 140 37.57      
17 A 88 79 16.87      
18 A 82 73 15.96      

Unscaled Zero Point Vibrational Energy (zpe) 13837.3 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 12432.8 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 HF/6-31G*
ABC
0.82811 0.09108 0.08250

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.837 0.431 -0.131
O2 -2.454 -0.291 -0.080
O3 0.233 0.916 -0.002
H4 -3.003 -0.105 0.668
C5 0.693 -0.180 0.004
O6 1.984 -0.442 0.010
H7 0.105 -1.087 0.007
H8 2.468 0.380 0.005

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 O6 H7 H8
H10.95082.13031.51192.60653.92272.46884.3076
O20.95082.94670.94713.15034.44202.68144.9682
O32.13032.94673.45941.18782.21602.00642.2981
H41.51190.94713.45943.75655.04243.32635.5328
C52.60653.15031.18783.75651.31781.08111.8609
O63.92274.44202.21605.04241.31781.98690.9535
H72.46882.68142.00643.32631.08111.98692.7810
H84.30764.96822.29815.53281.86090.95352.7810

picture of Water formic acid dimer 2 state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.471      
2 O -0.910      
3 O -0.550      
4 H 0.431      
5 C 0.534      
6 O -0.657      
7 H 0.214      
8 H 0.468      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.551 0.479 1.330 2.099
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 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 126.810
(<r2>)1/2 11.261