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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-265.889324
Energy at 298.15K-265.893628
Counterpoise corrected energy-265.884615
CP Energy at 298.15K-265.888511
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy117.317601
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 PBEPBEultrafine/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 3706 3645 48.94      
2 A 3537 3479 81.89      
3 A 3532 3474 91.26      
4 A 3043 2993 15.95      
5 A 1760 1731 300.30      
6 A 1702 1674 60.44      
7 A 1356 1334 2.77      
8 A 1301 1280 8.66      
9 A 1124 1105 197.09      
10 A 1044 1027 4.82      
11 A 722 710 138.24      
12 A 634 624 166.19      
13 A 605 595 216.96      
14 A 286 281 83.55      
15 A 238 234 97.05      
16 A 185 182 1.88      
17 A 115 113 15.07      
18 A 109 107 8.46      

Unscaled Zero Point Vibrational Energy (zpe) 12499.0 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 12292.8 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 PBEPBEultrafine/6-31G*
ABC
0.73167 0.09699 0.08636

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.726 0.433 -0.142
O2 -2.378 -0.303 -0.094
O3 0.197 0.973 0.004
H4 -2.694 -0.249 0.828
C5 0.638 -0.167 -0.006
O6 1.949 -0.480 0.010
H7 0.011 -1.078 -0.029
H8 2.434 0.380 0.025

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 O6 H7 H8
H10.98472.00231.53102.44313.79032.30584.1638
O20.98472.87520.97693.02054.33212.51274.8617
O32.00232.87523.24491.22322.27722.06042.3150
H41.53100.97693.24493.43624.72082.95705.2287
C52.44313.02051.22323.43621.34811.10621.8777
O63.79034.33212.27724.72081.34812.02850.9877
H72.30582.51272.06042.95701.10622.02852.8284
H84.16384.86172.31505.22871.87770.98772.8284

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 102.614 H1 O3 C5 95.428
O2 H1 O3 146.493 O3 C5 O6 124.582
O3 C5 H7 124.309 C5 O6 H8 105.977
O6 C5 H7 111.109
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.398      
2 O -0.787      
3 O -0.403      
4 H 0.374      
5 C 0.308      
6 O -0.475      
7 H 0.182      
8 H 0.402      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.128 0.417 1.455 2.611
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.137 1.030 -4.331
y 1.030 -25.184 -0.536
z -4.331 -0.536 -22.164
Traceless
 xyz
x 1.537 1.030 -4.331
y 1.030 -3.033 -0.536
z -4.331 -0.536 1.496
Polar
3z2-r22.992
x2-y23.046
xy1.030
xz-4.331
yz-0.536


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.911 -0.053 -0.190
y -0.053 3.561 0.013
z -0.190 0.013 2.207


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000