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

using model chemistry: PBEPBE/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-266.035940
Energy at 298.15K-266.039865
HF Energy-266.035940
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy116.520192
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/Def2TZVPP
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 3784 3739 67.00      
2 A 3604 3561 28.18      
3 A 3585 3542 259.56      
4 A 2998 2962 16.74      
5 A 1735 1714 341.76      
6 A 1613 1593 57.86      
7 A 1348 1331 2.78      
8 A 1277 1262 12.14      
9 A 1101 1088 220.46      
10 A 1025 1012 4.84      
11 A 690 682 129.11      
12 A 618 610 29.44      
13 A 539 532 212.00      
14 A 310 306 94.47      
15 A 163 161 17.79      
16 A 126 125 84.82      
17 A 73 72 5.75      
18 A 66 65 23.50      

Unscaled Zero Point Vibrational Energy (zpe) 12327.4 cm-1
Scaled (by 0.9879) Zero Point Vibrational Energy (zpe) 12178.3 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 PBEPBE/Def2TZVPP
ABC
0.85135 0.09001 0.08183

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/Def2TZVPP

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.840 0.441 -0.118
O2 -2.466 -0.302 -0.086
O3 0.219 0.940 -0.001
H4 -3.015 -0.138 0.692
C5 0.696 -0.173 0.006
O6 2.007 -0.457 0.009
H7 0.099 -1.102 0.014
H8 2.500 0.385 -0.000

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 O6 H7 H8
H10.97232.12251.54002.61293.95292.48284.3420
O20.97232.96020.96613.16644.47682.68965.0139
O32.12252.96023.47911.21092.26912.04632.3468
H41.54000.96613.47913.77445.07843.33035.5826
C52.61293.16641.21093.77441.34121.10481.8877
O63.95294.47682.26915.07841.34122.01360.9762
H72.48282.68962.04633.33031.10482.01362.8239
H84.34205.01392.34685.58261.88770.97622.8239

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 105.215 H1 O3 C5 99.584
O2 H1 O3 143.367 O3 C5 O6 125.447
O3 C5 H7 124.116 C5 O6 H8 108.058
O6 C5 H7 110.437
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.221      
2 O -0.438      
3 O -0.291      
4 H 0.197      
5 C 0.213      
6 O -0.210      
7 H 0.092      
8 H 0.216      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.952 0.486 1.196 2.341
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.956 0.507 -4.277
y 0.507 -25.496 -0.142
z -4.277 -0.142 -23.548
Traceless
 xyz
x 3.565 0.507 -4.277
y 0.507 -3.244 -0.142
z -4.277 -0.142 -0.322
Polar
3z2-r2-0.643
x2-y24.540
xy0.507
xz-4.277
yz-0.142


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.870 -0.183 -0.170
y -0.183 4.443 0.005
z -0.170 0.005 3.094


<r2> (average value of r2) Å2
<r2> 128.065
(<r2>)1/2 11.317