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

using model chemistry: B2PLYP/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B2PLYP/cc-pVTZ
 hartrees
Energy at 0K-266.127666
Energy at 298.15K-266.131741
HF Energy-265.836626
Nuclear repulsion energy117.598412
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 B2PLYP/cc-pVTZ
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 3907 3748 83.60      
2 A 3750 3598 101.34      
3 A 3742 3590 120.79      
4 A 3123 2997 13.39      
5 A 1783 1710 338.38      
6 A 1668 1601 62.42      
7 A 1410 1353 4.01      
8 A 1328 1274 13.84      
9 A 1149 1102 240.30      
10 A 1086 1042 2.43      
11 A 699 670 141.46      
12 A 641 615 32.95      
13 A 544 521 251.31      
14 A 295 283 88.70      
15 A 171 164 52.64      
16 A 153 147 46.34      
17 A 90 86 8.10      
18 A 81 78 29.76      

Unscaled Zero Point Vibrational Energy (zpe) 12809.2 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 12289.1 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 B2PLYP/cc-pVTZ
ABC
0.79264 0.09379 0.08438

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.834 0.434 -0.123
O2 -2.456 -0.300 -0.081
O3 0.220 0.931 -0.003
H4 -3.007 -0.117 0.681
C5 0.693 -0.177 0.002
O6 2.000 -0.450 0.012
H7 0.101 -1.095 -0.005
H8 2.478 0.390 0.013

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 O6 H7 H8
H10.96302.11611.52492.60303.93672.46924.3150
O20.96302.94600.95793.15264.45912.67914.9835
O32.11612.94603.46061.20442.25282.02872.3227
H41.52490.95793.46063.76235.06203.32995.5493
C52.60303.15261.20443.76231.33481.09221.8734
O63.93674.45912.25285.06201.33482.00490.9674
H72.46922.67912.02873.32991.09222.00492.8031
H84.31504.98352.32275.54931.87340.96742.8031

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 105.086 H1 O3 C5 99.566
O2 H1 O3 143.425 O3 C5 O6 124.969
O3 C5 H7 124.031 C5 O6 H8 107.861
O6 C5 H7 110.999
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.261      
2 O -0.495      
3 O -0.368      
4 H 0.227      
5 C 0.314      
6 O -0.279      
7 H 0.103      
8 H 0.236      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.173 -0.158 -0.163
y -0.158 4.101 0.006
z -0.163 0.006 2.826


<r2> (average value of r2) Å2
<r2> 124.470
(<r2>)1/2 11.157