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

using model chemistry: PBEPBE_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 PBEPBE_cp_opt/6-31+G**
 hartrees
Energy at 0K-265.931711
Energy at 298.15K-265.935506
Nuclear repulsion energy69.458065
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 PBEPBE_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
18 A 3810 3767 91.75      
17 A 3609 3568 24.97      
16 A 3594 3553 284.71      
15 A 3036 3002 13.20      
14 A 1740 1720 358.07      
13 A 1585 1567 128.18      
12 A 1354 1339 2.78      
11 A 1270 1255 21.54      
10 A 1110 1097 228.98      
9 A 1015 1003 7.33      
8 A 693 685 152.93      
7 A 610 603 47.96      
6 A 499 493 122.53      
5 A 351 347 198.04      
4 A 165 163 7.97      
3 A 78 77 107.56      
2 A 59 59 44.86      
1 A 51 50 30.64      

Unscaled Zero Point Vibrational Energy (zpe) 12313.6 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 12173.3 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 PBEPBE_cp_opt/6-31+G**
ABC
0.88257 0.08869 0.08065

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.766 0.384 -0.017
O2 -2.452 -0.317 -0.037
O3 0.167 0.888 -0.002
H4 -3.283 0.119 0.215
C5 0.714 -0.207 0.018
O6 2.049 -0.394 -0.002
H7 0.183 -1.176 0.056
H8 2.466 0.497 -0.037

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 O6 H7 H8
H10.98101.99791.55742.54903.89372.49694.2329
O20.98102.88360.97143.16834.50232.77294.9846
O31.99792.88363.54161.22372.27742.06502.3316
H41.55740.97143.54164.01475.36133.70315.7664
C52.54903.16831.22374.01471.34891.10601.8885
O63.89374.50232.27745.36131.34892.02450.9838
H72.49692.77292.06503.70311.10602.02452.8315
H84.23294.98462.33165.76641.88850.98382.8315

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 105.813 H1 O3 C5 101.903
O2 H1 O3 149.031 O3 C5 O6 124.498
O3 C5 H7 124.776 C5 O6 H8 107.064
O6 C5 H7 110.726
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE_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
  1.521 1.068 0.493 1.923
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.478 -1.029 -1.932
y -1.029 -25.833 0.018
z -1.932 0.018 -25.203
Traceless
 xyz
x 7.040 -1.029 -1.932
y -1.029 -3.993 0.018
z -1.932 0.018 -3.048
Polar
3z2-r2-6.095
x2-y27.355
xy-1.029
xz-1.932
yz0.018


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.844 -0.370 -0.022
y -0.370 3.733 -0.032
z -0.022 -0.032 2.029


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