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

using model chemistry: MP2_cp_opt/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-265.515913
Energy at 298.15K-265.519705
Nuclear repulsion energy69.683873
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/6-31+G**
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 3992 3754 126.06      
17 A 3817 3590 85.18      
16 A 3784 3559 91.21      
15 A 3216 3025 9.62      
14 A 1785 1679 329.44      
13 A 1635 1538 162.18      
12 A 1434 1349 2.73      
11 A 1316 1238 29.60      
10 A 1151 1083 275.77      
9 A 1076 1012 5.51      
8 A 693 651 174.87      
7 A 629 592 52.60      
6 A 446 420 112.85      
5 A 328 308 205.30      
4 A 155 146 4.26      
3 A 82 77 139.27      
2 A 67 63 23.40      
1 A 65 61 50.30      

Unscaled Zero Point Vibrational Energy (zpe) 12834.7 cm-1
Scaled (by 0.9406) Zero Point Vibrational Energy (zpe) 12072.3 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/6-31+G**
ABC
0.79926 0.09035 0.08117

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2_cp_opt/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.848 0.448 -0.000
O2 2.429 -0.326 -0.000
O3 -0.217 0.941 0.000
H4 3.330 0.011 0.002
C5 -0.694 -0.182 0.000
O6 -2.015 -0.449 -0.000
H7 -0.113 -1.105 0.001
H8 -2.480 0.407 -0.001

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 O6 H7 H8
H10.96792.12271.54522.61923.96542.50064.3284
O20.96792.93370.96223.12684.44572.65824.9638
O32.12272.93373.66671.22122.27282.04872.3260
H41.54520.96223.66674.02925.36483.61915.8239
C52.61923.12681.22124.02921.34711.09041.8806
O63.96544.44572.27285.36481.34712.01230.9736
H72.50062.65822.04873.61911.09042.01232.8090
H84.32844.96382.32605.82391.88060.97362.8090

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 106.379 H1 O3 C5 99.582
O2 H1 O3 140.355 O3 C5 O6 124.422
O3 C5 H7 124.723 C5 O6 H8 107.163
O6 C5 H7 110.855
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2_cp_opt/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.558      
4 H 0.000      
5 C 0.547      
6 O -0.531      
7 H 0.149      
8 H 0.393      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.771 0.689 0.006 1.034
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.084 0.823 0.025
y 0.823 -26.179 -0.002
z 0.025 -0.002 -24.763
Traceless
 xyz
x 9.387 0.823 0.025
y 0.823 -5.756 -0.002
z 0.025 -0.002 -3.631
Polar
3z2-r2-7.262
x2-y210.095
xy0.823
xz0.025
yz-0.002


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.447 -0.424 0.013
y -0.424 3.584 0.004
z 0.013 0.004 1.898


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