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

using model chemistry: B3LYP_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 B3LYP_cp/3-21G
 hartrees
Energy at 0K-264.674533
Energy at 298.15K-264.667673
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/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
18 A 3532 3408 25.13      
17 A 3442 3321 12.79      
16 A 3373 3255 96.33      
15 A 3160 3049 9.00      
14 A 1717 1656 42.43      
13 A 1702 1642 222.00      
12 A 1377 1329 10.25      
11 A 1345 1298 9.22      
10 A 1151 1110 8.54      
9 A 1092 1054 184.78      
8 A 712 687 433.45      
7 A 703 678 186.61      
6 A 615 593 134.55      
5 A 348 336 100.18      
4 A 309 298 110.38      
3 A 234 225 0.23      
2 A 167 161 30.23      
1 A 150 145 10.46      

Unscaled Zero Point Vibrational Energy (zpe) 12563.3 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 12122.4 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/3-21G
ABC
0.65802 0.10817 0.09377

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.683 0.506 -0.144
O2 -2.226 -0.334 -0.094
O3 0.176 1.029 0.009
H4 -2.577 -0.351 0.837
C5 0.561 -0.141 -0.014
O6 1.869 -0.521 0.011
H7 -0.110 -0.996 -0.058
H8 2.453 0.291 0.043

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 O6 H7 H8
H11.00131.93681.57972.33843.70102.17624.1453
O21.00132.76330.99552.79424.10092.21704.7220
O31.93682.76333.18821.23212.29632.04642.3940
H41.57970.99553.18823.25734.52552.70185.1319
C52.33842.79421.23213.25731.36321.08761.9415
O63.70104.10092.29634.52551.36322.03701.0002
H72.17622.21702.04642.70181.08762.03702.8696
H84.14534.72202.39405.13191.94151.00022.8696

picture of Water formic acid dimer 2 state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.342      
2 O -0.662      
3 O -0.479      
4 H 0.318      
5 C 0.404      
6 O -0.528      
7 H 0.239      
8 H 0.365      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.666 0.653 1.586 2.391
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> 113.353
(<r2>)1/2 10.647