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All results from a given calculation for H2OHCOOH (Water formic acid dimer 1)

using model chemistry: HF_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 HF_cp_opt/6-31+G**
 hartrees
Energy at 0K-264.813206
Energy at 298.15K-264.816777
Nuclear repulsion energy71.185860
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_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 4266 3857 125.38      
2 A 4140 3744 27.16      
3 A 4113 3719 122.88      
4 A 3330 3011 10.85      
5 A 2002 1810 512.21      
6 A 1732 1566 161.69      
7 A 1540 1392 14.60      
8 A 1403 1269 18.19      
9 A 1256 1135 332.55      
10 A 1196 1081 0.18      
11 A 691 625 219.58      
12 A 690 624 56.08      
13 A 297 268 120.33      
14 A 258 233 161.30      
15 A 109 98 0.51      
16 A 97 88 209.92      
17 A 79 71 16.70      
18 A 55 50 0.39      

Unscaled Zero Point Vibrational Energy (zpe) 13626.8 cm-1
Scaled (by 0.9042) Zero Point Vibrational Energy (zpe) 12321.3 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 HF_cp_opt/6-31+G**
ABC
0.67219 0.09246 0.08128

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.043 0.558 0.000
O2 2.405 -0.314 -0.000
O3 -0.328 0.943 -0.000
H4 3.345 -0.235 0.001
H5 -1.039 1.573 0.000
C6 -0.832 -0.287 -0.000
O7 -1.992 -0.523 0.000
H8 -0.041 -1.025 -0.000

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 O7 H8
H10.94462.40191.52483.24432.99604.17672.6162
O20.94463.00910.94273.92743.23744.40222.5471
O32.40193.00913.85750.94931.32942.21771.9892
H41.52480.94273.85754.74204.17705.34433.4761
H53.24433.92740.94934.74201.87102.30222.7828
C62.99603.23741.32944.17701.87101.18371.0821
O74.17674.40222.21775.34432.30221.18372.0148
H82.61622.54711.98923.47612.78281.08212.0148

picture of Water formic acid dimer 1 state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 H4 107.796 H1 O3 H5 147.715
H1 O3 C6 103.028 O2 H1 O3 121.826
O3 C6 O7 123.775 O3 C6 H8 110.738
H5 O3 C6 109.257 O7 C6 H8 125.487
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF_cp_opt/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.534      
4 H 0.000      
5 H 0.386      
6 C 0.546      
7 O -0.538      
8 H 0.139      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.647 2.604 0.002 3.713
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.779 -1.649 0.007
y -1.649 -21.180 0.000
z 0.007 0.000 -24.565
Traceless
 xyz
x 0.093 -1.649 0.007
y -1.649 2.492 0.000
z 0.007 0.000 -2.586
Polar
3z2-r2-5.171
x2-y2-1.599
xy-1.649
xz0.007
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.225 0.227 0.006
y 0.227 2.773 -0.003
z 0.006 -0.003 1.707


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