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

using model chemistry: HF_cp_opt/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 HF_cp_opt/6-31G*
 hartrees
Energy at 0K-264.779717
Energy at 298.15K-264.783498
Nuclear repulsion energy71.301343
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/6-31G*
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 4172 3749 115.28      
17 A 4043 3633 23.67      
16 A 4040 3630 176.58      
15 A 3346 3007 26.37      
14 A 2011 1807 460.15      
13 A 1844 1657 155.85      
12 A 1556 1398 14.82      
11 A 1448 1301 26.49      
10 A 1285 1155 301.21      
9 A 1204 1082 1.34      
8 A 725 652 224.26      
7 A 698 627 72.76      
6 A 454 408 156.39      
5 A 337 303 185.77      
4 A 149 134 5.04      
3 A 66 60 24.86      
2 A 49 44 136.57      
1 A 47 43 22.98      

Unscaled Zero Point Vibrational Energy (zpe) 13737.0 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 12342.7 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/6-31G*
ABC
0.90811 0.08713 0.07950

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.850 0.396 -0.000
O2 -2.492 -0.306 -0.000
O3 0.225 0.879 -0.000
H4 -3.339 0.117 0.001
C5 0.731 -0.195 0.000
O6 2.033 -0.404 0.000
H7 0.185 -1.129 0.000
H8 2.482 0.437 -0.000

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 O6 H7 H8
H10.95082.13071.51482.64803.96442.54264.3315
O20.95082.96410.94653.22514.52582.80065.0284
O32.13072.96413.64471.18692.21672.00792.2990
H41.51480.94653.64474.08215.39703.73755.8291
C52.64803.22511.18694.08211.31831.08201.8606
O63.96444.52582.21675.39701.31831.98480.9534
H72.54262.80062.00793.73751.08201.98482.7794
H84.33155.02842.29905.82911.86060.95342.7794

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 105.957 H1 O3 C5 102.136
O2 H1 O3 145.571 O3 C5 O6 124.385
O3 C5 H7 124.433 C5 O6 H8 108.917
O6 C5 H7 111.182
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF_cp_opt/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.518      
4 H 0.000      
5 C 0.525      
6 O -0.658      
7 H 0.183      
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
  1.151 0.956 0.002 1.496
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.653 -1.263 -0.008
y -1.263 -24.881 0.000
z -0.008 0.000 -23.763
Traceless
 xyz
x 7.668 -1.263 -0.008
y -1.263 -4.673 0.000
z -0.008 0.000 -2.995
Polar
3z2-r2-5.991
x2-y28.227
xy-1.263
xz-0.008
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.546 -0.163 0.004
y -0.163 2.693 -0.008
z 0.004 -0.008 1.256


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