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

using model chemistry: PBEPBEultrafine_cp_opt/6-31+G**

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_cp_opt/6-31+G**
 hartrees
Energy at 0K-265.931711
Energy at 298.15K-265.935489
Nuclear repulsion energy69.458803
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_cp_opt/6-31+G**
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 3808 3765 91.89      
2 A 3607 3566 24.63      
3 A 3592 3551 285.87      
4 A 3037 3002 13.22      
5 A 1740 1720 358.44      
6 A 1585 1567 127.58      
7 A 1354 1338 2.78      
8 A 1270 1256 21.22      
9 A 1110 1097 229.22      
10 A 1015 1003 7.36      
11 A 694 686 152.86      
12 A 610 603 47.76      
13 A 500 494 125.66      
14 A 350 346 196.27      
15 A 165 163 8.00      
16 A 75 74 34.47      
17 A 55 55 73.18      
18 A 49 48 74.23      

Unscaled Zero Point Vibrational Energy (zpe) 12306.9 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 12166.6 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_cp_opt/6-31+G**
ABC
0.88410 0.08863 0.08061

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.766 0.383 -0.017
O2 -2.453 -0.316 -0.037
O3 0.167 0.887 -0.003
H4 -3.281 0.119 0.224
C5 0.714 -0.207 0.017
O6 2.050 -0.393 -0.001
H7 0.184 -1.177 0.052
H8 2.466 0.498 -0.034

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 O6 H7 H8
H10.98101.99751.55732.54943.89402.49804.2328
O20.98102.88380.97143.16994.50422.77574.9857
O31.99752.88383.54031.22372.27732.06502.3314
H41.55730.97143.54034.01445.36093.70405.7652
C52.54943.16991.22374.01441.34891.10601.8884
O63.89404.50422.27735.36091.34892.02450.9838
H72.49802.77572.06503.70401.10602.02452.8314
H84.23284.98572.33145.76521.88840.98382.8314

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 105.809 H1 O3 C5 101.951
O2 H1 O3 149.131 O3 C5 O6 124.492
O3 C5 H7 124.778 C5 O6 H8 107.057
O6 C5 H7 110.729
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine_cp_opt/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.398      
4 H 0.000      
5 C 0.237      
6 O -0.344      
7 H 0.151      
8 H 0.354      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.530 1.067 0.510 1.933
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.527 -1.021 -1.981
y -1.021 -25.825 0.031
z -1.981 0.031 -25.193
Traceless
 xyz
x 6.982 -1.021 -1.981
y -1.021 -3.965 0.031
z -1.981 0.031 -3.017
Polar
3z2-r2-6.035
x2-y27.298
xy-1.021
xz-1.981
yz0.031


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.846 -0.369 -0.007
y -0.369 3.731 -0.012
z -0.007 -0.012 2.028


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