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

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-264.781820
Energy at 298.15K-264.785932
HF Energy-264.781820
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy117.967630
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 4167 3786 114.63      
2 A 4046 3676 51.47      
3 A 4039 3670 140.83      
4 A 3358 3051 21.22      
5 A 2003 1820 484.77      
6 A 1844 1675 108.77      
7 A 1553 1411 13.16      
8 A 1448 1316 25.72      
9 A 1287 1169 289.95      
10 A 1212 1101 1.10      
11 A 728 662 214.50      
12 A 699 636 61.10      
13 A 520 472 315.87      
14 A 284 258 126.10      
15 A 162 148 85.72      
16 A 155 141 37.57      
17 A 88 80 16.87      
18 A 82 74 15.96      

Unscaled Zero Point Vibrational Energy (zpe) 13837.3 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 12572.5 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
0.82811 0.09108 0.08250

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 -1.837 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
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 H4 105.619 H1 O3 C5 99.608
O2 H1 O3 143.131 O3 C5 O6 124.274
O3 C5 H7 124.266 C5 O6 H8 108.974
O6 C5 H7 111.460
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 0.471      
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
Primitive
 xyz
x -20.061 0.261 -4.539
y 0.261 -25.327 -0.277
z -4.539 -0.277 -22.485
Traceless
 xyz
x 3.845 0.261 -4.539
y 0.261 -4.054 -0.277
z -4.539 -0.277 0.209
Polar
3z2-r20.417
x2-y25.266
xy0.261
xz-4.539
yz-0.277


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.733 -0.083 -0.224
y -0.083 3.176 0.027
z -0.224 0.027 1.899


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