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

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-264.815895
Energy at 298.15K-264.819748
Nuclear repulsion energy71.290519
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
18 A 4254 3847 152.34      
17 A 4111 3717 23.78      
16 A 4108 3715 198.92      
15 A 3321 3003 16.81      
14 A 1979 1789 523.41      
13 A 1745 1577 163.01      
12 A 1540 1392 12.29      
11 A 1425 1288 42.38      
10 A 1276 1154 307.86      
9 A 1201 1086 0.30      
8 A 709 641 222.10      
7 A 696 629 70.82      
6 A 455 411 142.96      
5 A 339 307 191.03      
4 A 151 137 5.74      
3 A 74 67 154.71      
2 A 65 59 33.67      
1 A 57 51 25.29      

Unscaled Zero Point Vibrational Energy (zpe) 13752.4 cm-1
Scaled (by 0.9042) Zero Point Vibrational Energy (zpe) 12434.9 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
0.88593 0.08849 0.08045

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 -1.873 0.434 -0.000
O2 -2.467 -0.303 -0.000
O3 0.230 0.892 0.000
H4 -3.346 0.034 0.001
C5 0.721 -0.191 0.000
O6 2.018 -0.416 -0.000
H7 0.156 -1.114 0.000
H8 2.487 0.409 -0.000

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 O6 H7 H8
H10.94702.15221.52662.66783.98282.55204.3603
O20.94702.94990.94223.18934.48612.74475.0050
O32.15222.94993.67761.18902.21582.00802.3085
H41.52660.94223.67764.07315.38313.68545.8456
C52.66783.18931.18904.07311.31681.08281.8657
O63.98284.48612.21585.38311.31681.98890.9495
H72.55202.74472.00803.68541.08281.98892.7853
H84.36035.00502.30855.84561.86570.94952.7853

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 107.813 H1 O3 C5 102.086
O2 H1 O3 141.118 O3 C5 O6 124.242
O3 C5 H7 124.166 C5 O6 H8 109.756
O6 C5 H7 111.592
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 -0.548      
4 H 0.000      
5 C 0.545      
6 O -0.524      
7 H 0.138      
8 H 0.388      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.915 0.761 0.001 1.190
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.005 -0.942 -0.005
y -0.942 -25.817 -0.000
z -0.005 -0.000 -24.541
Traceless
 xyz
x 9.174 -0.942 -0.005
y -0.942 -5.543 -0.000
z -0.005 -0.000 -3.630
Polar
3z2-r2-7.260
x2-y29.811
xy-0.942
xz-0.005
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.881 -0.301 0.005
y -0.301 3.118 -0.008
z 0.005 -0.008 1.707


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