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

using model chemistry: PBEPBE_cp_opt/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 PBEPBE_cp_opt/aug-cc-pVTZ
 hartrees
Energy at 0K-266.029850
Energy at 298.15K-266.034545
Nuclear repulsion energy69.737566
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_cp_opt/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 3776 3738 80.44      
2 A 3591 3555 36.20      
3 A 3559 3523 332.97      
4 A 2994 2964 15.90      
5 A 1731 1714 351.76      
6 A 1605 1589 90.84      
7 A 1350 1337 2.95      
8 A 1273 1260 13.86      
9 A 1099 1088 233.23      
10 A 1016 1006 4.99      
11 A 684 677 127.34      
12 A 615 609 42.89      
13 A 513 508 91.06      
14 A 349 345 136.48      
15 A 162 160 9.50      
16 A 94 93 108.32      
17 A 64 63 1.38      

Unscaled Zero Point Vibrational Energy (zpe) 12236.9 cm-1
Scaled (by 0.99) Zero Point Vibrational Energy (zpe) 12114.5 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 PBEPBE_cp_opt/aug-cc-pVTZ
ABC
0.93879 0.08728 0.07997

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.749 0.347 -0.019
O2 -2.478 -0.306 -0.051
O3 0.155 0.856 -0.005
H4 -3.245 0.159 0.315
C5 0.728 -0.215 0.023
O6 2.066 -0.369 -0.002
H7 0.227 -1.197 0.073
H8 2.458 0.529 -0.047

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 O6 H7 H8
H10.97931.97011.54462.54013.88092.50884.2105
O20.97932.87790.96903.20864.54452.85075.0061
O31.97012.87793.48471.21482.26972.05552.3267
H41.54460.96903.48474.00155.34623.73525.7262
C52.54013.20861.21484.00151.34641.10421.8839
O63.88094.54452.26975.34621.34642.01830.9807
H72.50882.85072.05553.73521.10422.01832.8234
H84.21055.00612.32675.72621.88390.98072.8234

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 104.895 H1 O3 C5 103.228
O2 H1 O3 153.130 O3 C5 O6 124.717
O3 C5 H7 124.781 C5 O6 H8 107.056
O6 C5 H7 110.502
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE_cp_opt/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.432      
4 H 0.000      
5 C 0.043      
6 O -0.200      
7 H 0.412      
8 H 0.177      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.835 0.778 0.602 2.082
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.920 -0.576 -2.394
y -0.576 -25.309 0.104
z -2.394 0.104 -24.850
Traceless
 xyz
x 5.160 -0.576 -2.394
y -0.576 -2.924 0.104
z -2.394 0.104 -2.236
Polar
3z2-r2-4.472
x2-y25.389
xy-0.576
xz-2.394
yz0.104


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.200 -0.232 -0.040
y -0.232 3.989 -0.059
z -0.040 -0.059 2.523


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