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

using model chemistry: B1B95/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/aug-cc-pVDZ
 hartrees
Energy at 0K-266.075602
Energy at 298.15K-266.079536
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 B1B95/aug-cc-pVDZ
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 3909 3744 60.83      
2 A 3790 3630 16.68      
3 A 3733 3576 58.94      
4 A 3144 3012 10.94      
5 A 1893 1813 320.65      
6 A 1727 1654 76.78      
7 A 1423 1363 11.34      
8 A 1310 1255 8.65      
9 A 1161 1112 263.77      
10 A 1085 1039 1.57      
11 A 703 674 162.61      
12 A 629 603 54.59      
13 A 470 450 259.54      
14 A 228 218 123.69      
15 A 161 154 83.63      
16 A 138 132 0.43      
17 A 112 107 8.93      
18 A 83 80 10.00      

Unscaled Zero Point Vibrational Energy (zpe) 12848.8 cm-1
Scaled (by 0.9579) Zero Point Vibrational Energy (zpe) 12307.9 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 B1B95/aug-cc-pVDZ
ABC
0.64765 0.09659 0.08473

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/aug-cc-pVDZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.879 0.497 -0.197
O2 2.384 -0.319 -0.089
O3 -0.266 0.952 0.009
H4 2.727 -0.263 0.809
H5 -1.014 1.575 0.013
C6 -0.795 -0.288 -0.002
O7 -1.972 -0.516 0.007
H8 0.016 -1.024 -0.020

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 O7 H8
H10.96572.20241.51973.09362.79343.98662.4112
O20.96572.94090.96383.89093.18034.36122.4717
O32.20242.94093.32850.97261.34812.25001.9961
H41.51970.96383.32854.24303.61474.77372.9358
H53.09363.89090.97264.24301.87562.29952.7952
C62.79343.18031.34813.61471.87561.19861.0952
O73.98664.36122.25004.77372.29951.19862.0518
H82.41122.47171.99612.93582.79521.09522.0518

picture of Water formic acid dimer 1 state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 H4 103.926 H1 O3 H5 151.754
H1 O3 C6 101.022 O2 H1 O3 132.361
O3 C6 O7 124.031 O3 C6 H8 109.133
H5 O3 C6 106.719 O7 C6 H8 126.837
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.419      
2 O -0.810      
3 O -0.567      
4 H 0.400      
5 H 0.425      
6 C 0.355      
7 O -0.414      
8 H 0.194      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.775 2.375 1.380 2.854
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 4.176 0.042 0.202
y 0.042 3.492 -0.021
z 0.202 -0.021 2.124


<r2> (average value of r2) Å2
<r2> 123.129
(<r2>)1/2 11.096