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

using model chemistry: B3LYP_cp_opt/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3LYP_cp_opt/3-21G
 hartrees
Energy at 0K-264.676930
Energy at 298.15K-264.680630
Nuclear repulsion energy68.718889
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 B3LYP_cp_opt/3-21G
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 3559 3435 5.80      
2 A 3458 3337 10.33      
3 A 3410 3290 48.03      
4 A 3117 3008 9.02      
5 A 1768 1706 190.62      
6 A 1698 1638 74.37      
7 A 1425 1375 10.62      
8 A 1305 1259 8.99      
9 A 1087 1049 9.45      
10 A 1046 1010 232.34      
11 A 682 658 210.65      
12 A 606 585 44.79      
13 A 415 401 184.07      
14 A 304 293 149.00      
15 A 139 134 9.02      
16 A 91 88 88.32      
17 A 84 81 5.63      
18 A 48 46 65.89      

Unscaled Zero Point Vibrational Energy (zpe) 12122.0 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 11696.6 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 B3LYP_cp_opt/3-21G
ABC
0.64275 0.09569 0.08344

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP_cp_opt/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.773 0.454 -0.055
O2 2.350 -0.360 -0.055
O3 -0.235 0.963 0.006
H4 3.213 -0.066 0.340
H5 -0.960 1.648 -0.044
C6 -0.810 -0.300 0.025
O7 -2.011 -0.504 -0.008
H8 -0.001 -1.031 0.072

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 O7 H8
H10.99782.07181.58182.98222.69173.90312.3167
O20.99782.90400.99433.87133.16134.36302.4477
O32.07182.90403.61390.99901.38792.30362.0086
H41.58180.99433.61394.52824.04255.25393.3665
H52.98223.87130.99904.52821.95512.39542.8480
C62.69173.16131.38794.04251.95511.21841.0914
O73.90314.36302.30365.25392.39541.21842.0792
H82.31672.44772.00863.36652.84801.09142.0792

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 105.129 H1 O3 H5 150.511
H1 O3 C6 100.284 O2 H1 O3 139.523
O3 C6 O7 124.104 O3 C6 H8 107.620
H5 O3 C6 108.896 O7 C6 H8 128.276
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP_cp_opt/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.533      
4 H 0.000      
5 H 0.359      
6 C 0.410      
7 O -0.447      
8 H 0.212      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.144 2.856 0.731 3.162
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.048 -0.294 2.464
y -0.294 -20.605 -0.353
z 2.464 -0.353 -23.090
Traceless
 xyz
x -2.200 -0.294 2.464
y -0.294 2.963 -0.353
z 2.464 -0.353 -0.763
Polar
3z2-r2-1.526
x2-y2-3.442
xy-0.294
xz2.464
yz-0.353


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.686 0.111 -0.035
y 0.111 2.754 0.034
z -0.035 0.034 0.874


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