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All results from a given calculation for HCOOHH2O (Formic acid water dimer)

using model chemistry: B3LYPultrafine_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 B3LYPultrafine_cp_opt/6-311+G(3df,2pd)
 hartrees
Energy at 0K-266.320088
Energy at 298.15K-266.324905
Nuclear repulsion energy9.105251
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 B3LYPultrafine_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 3888 3772 92.83      
2 A 3673 3563 238.84      
3 A 3375 3274 581.30      
4 A 3048 2957 69.40      
5 A 1775 1722 337.25      
6 A 1623 1575 127.41      
7 A 1448 1405 1.45      
8 A 1387 1346 15.73      
9 A 1211 1175 226.31      
10 A 1069 1037 5.93      
11 A 914 887 121.76      
12 A 699 678 43.12      
13 A 602 584 158.08      
14 A 365 354 73.10      
15 A 266 258 102.51      
16 A 210 204 28.78      
17 A 187 181 43.03      
18 A 167 162 12.56      

Unscaled Zero Point Vibrational Energy (zpe) 12954.3 cm-1
Scaled (by 0.97) Zero Point Vibrational Energy (zpe) 12565.6 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 B3LYPultrafine_cp_opt/6-311+G(3df,2pd)
ABC
0.39518 0.16413 0.11670

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine_cp_opt/6-311+G(3df,2pd)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.392 0.969 0.002
O2 -0.583 1.129 0.007
O3 1.907 0.002 -0.089
C4 -1.205 -0.040 0.008
O5 -0.673 -1.125 0.004
H6 -2.293 0.096 0.013
H7 2.580 -0.086 0.592
H8 1.339 -0.784 -0.026

Atom - Atom Distances (Å)
  H1 O2 O3 C4 O5 H6 H7 H8
H10.98791.80011.88992.34952.82352.49921.9925
O20.98792.73511.32462.25551.99783.43772.7114
O31.80012.73513.11462.81724.20260.96070.9715
C41.88991.32463.11461.20821.09593.83002.6510
O52.34952.25552.81721.20822.02843.46472.0410
H62.82351.99784.20261.09592.02844.91003.7371
H72.49923.43770.96073.83003.46474.91001.5517
H81.99252.71140.97152.65102.04103.73711.5517

picture of Formic acid water dimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 C4 108.746 H1 O3 H7 127.023
H1 O3 H8 86.490 O2 H1 O3 156.596
O2 C4 O5 125.817 O2 C4 H6 110.895
O5 C4 H6 123.288 H7 O3 H8 106.853
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine_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 -0.364      
4 C 0.000      
5 O 0.000      
6 H 0.000      
7 H 0.179      
8 H 0.185      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.588 0.274 1.201 1.365
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.848 -1.452 3.532
y -1.452 -28.088 -0.096
z 3.532 -0.096 -23.830
Traceless
 xyz
x 8.111 -1.452 3.532
y -1.452 -7.250 -0.096
z 3.532 -0.096 -0.861
Polar
3z2-r2-1.722
x2-y210.240
xy-1.452
xz3.532
yz-0.096


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.325 0.063 0.049
y 0.063 1.266 0.026
z 0.049 0.026 1.249


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