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

using model chemistry: PBEPBE_cp/3-21G

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/3-21G
 hartrees
Energy at 0K-264.386813
Energy at 298.15K-264.379894
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 PBEPBE/3-21G
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 3421 3390 20.67      
2 A 3325 3295 2.50      
3 A 3271 3241 44.89      
4 A 2944 2918 31.29      
5 A 1719 1704 166.30      
6 A 1677 1662 45.90      
7 A 1368 1356 35.72      
8 A 1197 1186 45.17      
9 A 1140 1129 12.58      
10 A 978 969 205.97      
11 A 687 680 320.80      
12 A 655 649 156.48      
13 A 564 558 57.42      
14 A 380 376 97.76      
15 A 272 270 81.55      
16 A 214 212 6.01      
17 A 166 164 27.51      
18 A 146 145 12.59      

Unscaled Zero Point Vibrational Energy (zpe) 12061.0 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 11951.3 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/3-21G
ABC
0.55096 0.11293 0.09472

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.668 0.509 -0.188
O2 2.178 -0.360 -0.094
O3 -0.194 1.039 0.011
H4 2.397 -0.390 0.889
H5 -0.978 1.677 0.030
C6 -0.689 -0.287 -0.015
O7 -1.882 -0.574 0.011
H8 0.226 -0.909 -0.064

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 O7 H8
H11.01271.94651.58082.90092.49403.71692.0267
O21.01272.75661.00773.75922.86924.06702.0281
O31.94652.75663.08681.01111.41522.33421.9942
H41.58081.00773.08684.05023.21694.37142.4267
H52.90093.75921.01114.05021.98572.42582.8545
C62.49402.86921.41523.21691.98571.22721.1076
O73.71694.06702.33424.37142.42581.22722.1356
H82.02672.02811.99422.42672.85451.10762.1356

picture of Water formic acid dimer 1 state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.337      
2 O -0.616      
3 O -0.512      
4 H 0.320      
5 H 0.357      
6 C 0.300      
7 O -0.421      
8 H 0.236      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.413 2.431 1.514 2.893
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> 0.000
(<r2>)1/2 0.000