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

using model chemistry: HF/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 HF/6-311+G(3df,2pd)
 hartrees
Energy at 0K-264.905990
Energy at 298.15K-264.909436
Counterpoise corrected energy-264.905736
CP Energy at 298.15K-264.909148
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy116.981262
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 HF/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 4243 3845 125.79      
2 A 4141 3752 22.34      
3 A 4107 3721 116.11      
4 A 3272 2965 15.46      
5 A 1994 1806 487.64      
6 A 1747 1583 128.60      
7 A 1539 1394 13.43      
8 A 1409 1277 11.23      
9 A 1247 1130 314.01      
10 A 1201 1088 0.10      
11 A 697 631 50.70      
12 A 685 621 179.82      
13 A 280 253 78.95      
14 A 238 215 130.43      
15 A 99 89 0.98      
16 A 78 71 169.00      
17 A 68 61 13.76      
18 A 52 47 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 13547.1 cm-1
Scaled (by 0.906) Zero Point Vibrational Energy (zpe) 12273.7 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 HF/6-311+G(3df,2pd)
ABC
0.68883 0.08978 0.07943

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.049 0.538 0.000
O2 2.450 -0.314 0.000
O3 -0.337 0.931 -0.000
H4 3.379 -0.179 0.000
H5 -1.038 1.566 0.000
C6 -0.857 -0.288 -0.000
O7 -2.010 -0.512 0.000
H8 -0.074 -1.036 -0.000

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 O7 H8
H10.94132.41811.51083.25363.02104.19272.6432
O20.94133.05160.93963.96163.30624.46382.6250
O32.41813.05163.87810.94591.32492.20911.9842
H41.51080.93963.87814.74914.23735.39953.5583
H53.25363.96160.94594.74911.86242.29362.7744
C63.02103.30621.32494.23731.86241.17481.0825
O74.19274.46382.20915.39952.29361.17482.0054
H82.64322.62501.98423.55832.77441.08252.0054

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 106.884 H1 O3 H5 147.178
H1 O3 C6 103.758 O2 H1 O3 124.507
O3 C6 O7 124.087 O3 C6 H8 110.612
H5 O3 C6 109.064 O7 C6 H8 125.301
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311+G(3df,2pd) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.173      
2 O -0.291      
3 O -0.499      
4 H 0.128      
5 H 0.162      
6 C 1.020      
7 O -0.784      
8 H 0.090      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.414 2.469 0.000 3.453
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.458 -1.457 0.001
y -1.457 -21.002 0.001
z 0.001 0.001 -24.381
Traceless
 xyz
x -0.767 -1.457 0.001
y -1.457 2.918 0.001
z 0.001 0.001 -2.151
Polar
3z2-r2-4.302
x2-y2-2.456
xy-1.457
xz0.001
yz0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.819 0.150 -0.000
y 0.150 4.014 0.000
z -0.000 0.000 3.023


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