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All results from a given calculation for HCOOHH2O (Formic acid water dimer)

using model chemistry: B3LYP_cp/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3LYP_cp/aug-cc-pVTZ
 hartrees
Energy at 0K-266.324986
Energy at 298.15K-266.318225
Nuclear repulsion energy 
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 B3LYP/aug-cc-pVTZ
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 3861 3736 90.55      
2 A 3637 3519 256.65      
3 A 3332 3224 587.95      
4 A 3050 2950 72.86      
5 A 1767 1709 332.40      
6 A 1622 1569 126.40      
7 A 1450 1403 1.95      
8 A 1386 1341 16.35      
9 A 1210 1170 223.32      
10 A 1068 1034 7.09      
11 A 920 891 115.68      
12 A 699 676 43.18      
13 A 614 594 151.05      
14 A 366 354 66.67      
15 A 272 263 97.06      
16 A 217 210 28.88      
17 A 190 184 41.14      
18 A 171 166 13.09      

Unscaled Zero Point Vibrational Energy (zpe) 12915.3 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 12495.5 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 B3LYP/aug-cc-pVTZ
ABC
0.39429 0.16572 0.11744

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.401 0.965 0.003
O2 -0.575 1.131 0.007
O3 1.898 -0.001 -0.090
C4 -1.202 -0.038 0.007
O5 -0.672 -1.126 0.004
H6 -2.289 0.101 0.012
H7 2.563 -0.084 0.600
H8 1.325 -0.785 -0.026

Atom - Atom Distances (Å)
  H1 O2 O3 C4 O5 H6 H7 H8
H10.99011.78381.89112.35002.82562.47551.9795
O20.99012.72111.32612.25831.99953.41612.6984
O31.78382.72113.10152.80644.18920.96170.9731
C41.89111.32613.10151.21021.09583.81112.6355
O52.35002.25832.80641.21022.02973.44972.0259
H62.82561.99954.18921.09582.02974.89033.7213
H72.47553.41610.96173.81113.44974.89031.5539
H81.97952.69840.97312.63552.02593.72131.5539

picture of Formic acid water dimer state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.268      
2 O -0.302      
3 O -0.373      
4 C 0.013      
5 O -0.527      
6 H 0.508      
7 H 0.155      
8 H 0.259      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.586 0.290 1.198 1.365
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 94.343
(<r2>)1/2 9.713