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

using model chemistry: HF_cp_opt/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 HF_cp_opt/6-31G*
 hartrees
Energy at 0K-264.777211
Energy at 298.15K-264.780698
Nuclear repulsion energy71.200245
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_cp_opt/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 4188 3763 84.07      
2 A 4069 3656 23.45      
3 A 4043 3633 107.82      
4 A 3359 3018 18.34      
5 A 2031 1825 443.68      
6 A 1827 1641 152.46      
7 A 1555 1397 16.96      
8 A 1430 1285 13.45      
9 A 1264 1136 317.25      
10 A 1200 1078 0.96      
11 A 712 640 219.45      
12 A 693 622 59.27      
13 A 288 259 128.98      
14 A 251 225 154.26      
15 A 105 94 0.44      
16 A 73 65 18.91      
17 A 71 64 180.49      
18 A 56 50 5.86      

Unscaled Zero Point Vibrational Energy (zpe) 13606.6 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 12225.5 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_cp_opt/6-31G*
ABC
0.66933 0.09241 0.08120

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.029 0.550 -0.000
O2 2.408 -0.319 -0.000
O3 -0.330 0.946 -0.000
H4 3.347 -0.196 0.001
H5 -1.055 1.565 0.000
C6 -0.832 -0.286 -0.000
O7 -1.990 -0.526 0.000
H8 -0.037 -1.019 -0.000

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 O7 H8
H10.94852.39181.51473.24632.98074.16012.5943
O20.94853.01630.94693.94243.24054.40272.5436
O32.39183.01633.85020.95321.33042.21831.9865
H41.51470.94693.85024.74104.18025.34693.4829
H53.24633.94240.95324.74101.86452.29052.7771
C62.98073.24051.33044.18021.86451.18211.0812
O74.16014.40272.21835.34692.29051.18212.0137
H82.59432.54361.98653.48292.77711.08122.0137

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 106.099 H1 O3 H5 149.017
H1 O3 C6 102.651 O2 H1 O3 123.103
O3 C6 O7 123.886 O3 C6 H8 110.494
H5 O3 C6 108.332 O7 C6 H8 125.621
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF_cp_opt/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.669      
4 H 0.000      
5 H 0.465      
6 C 0.528      
7 O -0.509      
8 H 0.184      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.433 2.641 0.001 3.590
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.958 -1.284 0.005
y -1.284 -20.778 0.000
z 0.005 0.000 -23.781
Traceless
 xyz
x 0.322 -1.284 0.005
y -1.284 2.091 0.000
z 0.005 0.000 -2.413
Polar
3z2-r2-4.827
x2-y2-1.180
xy-1.284
xz0.005
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.754 0.115 0.007
y 0.115 2.489 -0.005
z 0.007 -0.005 1.255


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