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

using model chemistry: MP2_cp_opt/6-311+G(3df,2pd)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2_cp_opt/6-311+G(3df,2pd)
 hartrees
Energy at 0K-265.803205
Energy at 298.15K-265.806728
Nuclear repulsion energy70.134168
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 MP2_cp_opt/6-311+G(3df,2pd)
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 3976 3777 115.66      
2 A 3851 3659 28.32      
3 A 3787 3598 85.62      
4 A 3149 2992 6.70      
5 A 1809 1718 318.39      
6 A 1631 1549 107.11      
7 A 1422 1351 7.28      
8 A 1286 1222 7.91      
9 A 1119 1063 284.15      
10 A 1069 1016 3.16      
11 A 666 633 139.81      
12 A 628 596 35.81      
13 A 315 299 65.46      
14 A 267 253 138.48      
15 A 130 124 1.73      
16 A 88 84 56.07      
17 A 79 75 107.94      
18 A 45 43 2.38      

Unscaled Zero Point Vibrational Energy (zpe) 12658.4 cm-1
Scaled (by 0.95) Zero Point Vibrational Energy (zpe) 12025.4 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 MP2_cp_opt/6-311+G(3df,2pd)
ABC
0.68062 0.09458 0.08304

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2_cp_opt/6-311+G(3df,2pd)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.919 0.513 0.002
O2 2.363 -0.339 -0.013
O3 -0.263 0.940 0.001
H4 3.295 -0.134 0.071
H5 -0.996 1.572 -0.011
C6 -0.822 -0.292 0.006
O7 -2.006 -0.494 -0.002
H8 -0.037 -1.051 0.018

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 O7 H8
H10.96092.22301.52233.10082.85644.05132.5041
O20.96092.92070.95813.86423.18524.37112.5036
O32.22302.92073.71700.96791.35262.25662.0030
H41.52230.95813.71704.61804.12045.31313.4564
H53.10083.86420.96794.61801.87222.29982.7923
C62.85643.18521.35264.12041.87221.20071.0913
O74.05134.37112.25665.31312.29981.20072.0454
H82.50412.50362.00303.45642.79231.09132.0454

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 104.979 H1 O3 H5 150.265
H1 O3 C6 103.338 O2 H1 O3 128.601
O3 C6 O7 124.094 O3 C6 H8 109.622
H5 O3 C6 106.390 O7 C6 H8 126.284
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2_cp_opt/6-311+G(3df,2pd) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.508      
4 H 0.000      
5 H 0.183      
6 C 0.987      
7 O -0.735      
8 H 0.072      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.331 2.445 0.175 3.383
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.632 -4.802 0.001
y -4.802 -14.459 -0.055
z 0.001 -0.055 -17.022
Traceless
 xyz
x -7.891 -4.802 0.001
y -4.802 5.868 -0.055
z 0.001 -0.055 2.023
Polar
3z2-r24.047
x2-y2-9.173
xy-4.802
xz0.001
yz-0.055


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.820 0.315 0.010
y 0.315 3.577 -0.007
z 0.010 -0.007 2.287


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