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

using model chemistry: HF_cp_opt/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_cp_opt/6-311+G(3df,2pd)
 hartrees
Energy at 0K-264.905736
Energy at 298.15K-264.909148
Nuclear repulsion energy71.521854
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/6-311+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 4244 3862 122.70      
2 A 4141 3768 22.58      
3 A 4108 3739 115.21      
4 A 3271 2977 15.66      
5 A 1993 1814 488.55      
6 A 1746 1589 129.52      
7 A 1539 1401 13.52      
8 A 1410 1283 11.52      
9 A 1248 1135 313.61      
10 A 1201 1093 0.09      
11 A 697 634 51.14      
12 A 684 623 179.35      
13 A 268 244 83.06      
14 A 233 212 130.79      
15 A 96 87 0.67      
16 A 75 68 168.27      
17 A 68 62 13.01      
18 A 49 45 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 13535.2 cm-1
Scaled (by 0.91) Zero Point Vibrational Energy (zpe) 12317.0 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/6-311+G(3df,2pd)
ABC
0.68228 0.08903 0.07875

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.075 0.546 -0.000
O2 2.463 -0.312 -0.000
O3 -0.349 0.935 0.000
H4 3.394 -0.189 0.000
H5 -1.055 1.565 -0.000
C6 -0.860 -0.287 0.000
O7 -2.011 -0.520 -0.000
H8 -0.072 -1.029 0.000

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 O7 H8
H10.94132.45541.51033.29183.05094.22322.6628
O20.94133.07610.93973.98713.32274.47902.6342
O32.45543.07613.90880.94581.32462.20911.9840
H41.51030.93973.90884.78274.25545.41593.5666
H53.29183.98710.94584.78271.86202.29342.7742
C63.05093.32271.32464.25541.86201.17491.0826
O74.22324.47902.20915.41592.29341.17492.0054
H82.66282.63421.98403.56662.77421.08262.0054

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 106.821 H1 O3 H5 147.395
H1 O3 C6 103.553 O2 H1 O3 123.443
O3 C6 O7 124.103 O3 C6 H8 110.611
H5 O3 C6 109.051 O7 C6 H8 125.286
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF_cp_opt/6-311+G(3df,2pd) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.475      
4 H 0.000      
5 H 0.155      
6 C 1.003      
7 O -0.743      
8 H 0.060      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.445 2.469 0.001 3.475
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.266 -1.548 0.001
y -1.548 -21.032 -0.002
z 0.001 -0.002 -24.382
Traceless
 xyz
x -0.559 -1.548 0.001
y -1.548 2.792 -0.002
z 0.001 -0.002 -2.233
Polar
3z2-r2-4.466
x2-y2-2.234
xy-1.548
xz0.001
yz-0.002


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.363 0.205 0.005
y 0.205 3.084 -0.003
z 0.005 -0.003 2.086


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