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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/6-31+G**
 hartrees
Energy at 0K-265.932362
Energy at 298.15K-265.936125
Counterpoise corrected energy-265.931711
CP Energy at 298.15K-265.935489
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy116.364270
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 PBEPBEultrafine/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
1 A 3809 3765 91.56      
2 A 3606 3565 31.81      
3 A 3583 3542 280.58      
4 A 3037 3003 12.23      
5 A 1739 1719 348.96      
6 A 1583 1565 135.65      
7 A 1354 1338 3.22      
8 A 1271 1257 21.05      
9 A 1110 1098 228.94      
10 A 1015 1003 7.05      
11 A 694 686 153.08      
12 A 610 603 49.62      
13 A 500 494 97.06      
14 A 364 359 208.11      
15 A 174 172 6.91      
16 A 78 77 29.83      
17 A 54 54 20.87      
18 A 25 25 133.02      

Unscaled Zero Point Vibrational Energy (zpe) 12302.7 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 12162.4 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 PBEPBEultrafine/6-31+G**
ABC
0.87180 0.09063 0.08210

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.748 0.394 -0.004
O2 -2.419 -0.323 -0.011
O3 0.161 0.896 -0.001
H4 -3.281 0.118 0.061
C5 0.700 -0.203 0.005
O6 2.034 -0.399 -0.001
H7 0.161 -1.169 0.016
H8 2.456 0.490 -0.010

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 O6 H7 H8
H10.98171.97431.55872.52003.86472.46794.2054
O20.98172.85330.97133.12104.45362.71554.9421
O31.97432.85333.52941.22392.27692.06492.3305
H41.55870.97133.52943.99435.34083.67565.7495
C52.52003.12101.22393.99431.34861.10591.8880
O63.86474.45362.27695.34081.34862.02510.9839
H72.46792.71552.06493.67561.10592.02512.8317
H84.20544.94212.33055.74951.88800.98392.8317

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 105.901 H1 O3 C5 101.396
O2 H1 O3 147.800 O3 C5 O6 124.458
O3 C5 H7 124.744 C5 O6 H8 107.043
O6 C5 H7 110.798
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.371      
2 O -0.748      
3 O -0.427      
4 H 0.358      
5 C 0.248      
6 O -0.343      
7 H 0.184      
8 H 0.356      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.432 1.095 0.141 1.808
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.979 -1.089 -0.550
y -1.089 -25.873 0.006
z -0.550 0.006 -25.340
Traceless
 xyz
x 7.627 -1.089 -0.550
y -1.089 -4.213 0.006
z -0.550 0.006 -3.414
Polar
3z2-r2-6.828
x2-y27.894
xy-1.089
xz-0.550
yz0.006


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.857 -0.292 -0.011
y -0.292 4.503 -0.015
z -0.011 -0.015 3.106


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