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

using model chemistry: PBEPBE/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 PBEPBE/6-31G*
 hartrees
Energy at 0K-265.885652
Energy at 298.15K-265.889546
Counterpoise corrected energy-265.881525
CP Energy at 298.15K-265.885072
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy116.518130
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 PBEPBE/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 3728 3675 46.26      
2 A 3607 3555 18.49      
3 A 3542 3491 30.82      
4 A 3020 2977 10.37      
5 A 1803 1777 260.96      
6 A 1690 1666 64.31      
7 A 1363 1344 14.14      
8 A 1248 1230 4.76      
9 A 1084 1069 235.97      
10 A 1034 1020 4.64      
11 A 691 681 138.12      
12 A 600 592 46.94      
13 A 469 462 250.85      
14 A 238 234 97.47      
15 A 175 173 79.92      
16 A 143 141 0.21      
17 A 108 107 11.55      
18 A 87 86 11.19      

Unscaled Zero Point Vibrational Energy (zpe) 12315.0 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 12138.9 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 PBEPBE/6-31G*
ABC
0.62881 0.09728 0.08499

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.838 0.488 -0.195
O2 2.375 -0.325 -0.094
O3 -0.245 0.968 0.010
H4 2.631 -0.297 0.849
H5 -1.009 1.592 0.012
C6 -0.787 -0.290 -0.002
O7 -1.978 -0.521 0.005
H8 0.044 -1.023 -0.020

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 O7 H8
H10.97982.14711.52863.06072.74503.95232.3526
O20.97982.92280.97723.89063.16344.35812.4343
O32.14712.92283.25170.98711.36952.28472.0114
H41.52860.97723.25174.18603.52274.69102.8242
H53.06073.89060.98714.18601.89492.32452.8190
C62.74503.16341.36953.52271.89491.21301.1082
O73.95234.35812.28474.69102.32451.21302.0831
H82.35262.43432.01142.82422.81901.10822.0831

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 102.716 H1 O3 H5 153.205
H1 O3 C6 100.281 O2 H1 O3 134.961
O3 C6 O7 124.321 O3 C6 H8 108.091
H5 O3 C6 105.902 O7 C6 H8 127.588
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.397      
2 O -0.768      
3 O -0.512      
4 H 0.380      
5 H 0.401      
6 C 0.294      
7 O -0.372      
8 H 0.179      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.487 2.282 1.387 2.715
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.656 -1.761 4.201
y -1.761 -20.882 -0.754
z 4.201 -0.754 -22.035
Traceless
 xyz
x -8.198 -1.761 4.201
y -1.761 4.964 -0.754
z 4.201 -0.754 3.234
Polar
3z2-r26.468
x2-y2-8.774
xy-1.761
xz4.201
yz-0.754


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.567 0.050 0.188
y 0.050 3.773 -0.031
z 0.188 -0.031 2.235


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