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

using model chemistry: BLYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at BLYP/6-31G*
 hartrees
Energy at 0K-266.116598
Energy at 298.15K-266.120435
HF Energy-266.116598
Nuclear repulsion energy115.647392
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 BLYP/6-31G*
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 3676 3647 37.40      
2 A 3562 3533 13.20      
3 A 3501 3473 23.96      
4 A 3019 2994 12.01      
5 A 1775 1761 253.88      
6 A 1689 1675 60.61      
7 A 1370 1359 15.47      
8 A 1246 1236 4.77      
9 A 1057 1049 235.32      
10 A 1030 1021 5.15      
11 A 680 675 135.50      
12 A 596 591 41.34      
13 A 453 449 245.73      
14 A 233 232 95.67      
15 A 174 173 77.04      
16 A 136 135 0.17      
17 A 102 101 11.00      
18 A 86 86 9.18      

Unscaled Zero Point Vibrational Energy (zpe) 12192.6 cm-1
Scaled (by 0.9919) Zero Point Vibrational Energy (zpe) 12093.8 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 BLYP/6-31G*
ABC
0.62320 0.09467 0.08289

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.975 0.531 -0.107
O2 2.441 -0.327 -0.092
O3 -0.287 0.966 0.008
H4 3.018 -0.278 0.692
H5 -1.023 1.618 -0.004
C6 -0.835 -0.283 0.009
O7 -2.023 -0.533 0.002
H8 -0.012 -1.023 0.021

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 O7 H8
H10.97572.30671.54263.19122.92794.13842.5257
O20.97573.02020.97453.97333.27714.46882.5517
O32.30673.02023.59710.98321.36462.29352.0084
H41.54260.97453.59714.51783.91285.09393.1913
H53.19123.97330.98324.51781.91082.37162.8281
C62.92793.27711.36463.91281.91081.21371.1065
O74.13844.46882.29355.09392.37161.21372.0697
H82.52572.55172.00843.19132.82811.10652.0697

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 104.552 H1 O3 H5 149.198
H1 O3 C6 102.751 O2 H1 O3 129.257
O3 C6 O7 125.520 O3 C6 H8 108.278
H5 O3 C6 107.840 O7 C6 H8 126.201
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.384      
2 O -0.745      
3 O -0.503      
4 H 0.367      
5 H 0.386      
6 C 0.321      
7 O -0.371      
8 H 0.160      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.496 2.239 1.368 2.670
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.699 -1.679 4.203
y -1.679 -20.947 -0.759
z 4.203 -0.759 -22.058
Traceless
 xyz
x -8.197 -1.679 4.203
y -1.679 4.932 -0.759
z 4.203 -0.759 3.265
Polar
3z2-r26.530
x2-y2-8.752
xy-1.679
xz4.203
yz-0.759


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.588 0.037 0.214
y 0.037 3.812 -0.037
z 0.214 -0.037 2.237


<r2> (average value of r2) Å2
<r2> 125.537
(<r2>)1/2 11.204