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

using model chemistry: PBEPBE_cp_opt/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at PBEPBE_cp_opt/6-31+G**
 hartrees
Energy at 0K-265.928563
Energy at 298.15K-265.931957
Nuclear repulsion energy69.276688
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 PBEPBE_cp_opt/6-31+G**
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' 3826 3783 80.98      
2 A' 3688 3645 29.42      
3 A' 3617 3576 46.97      
4 A' 3031 2996 7.68      
5 A' 1768 1748 336.23      
6 A' 1570 1552 130.09      
7 A' 1358 1342 8.10      
8 A' 1229 1215 5.25      
9 A' 1073 1061 259.30      
10 A' 597 591 34.46      
11 A' 272 269 173.44      
12 A' 126 125 1.36      
13 A' 73 72 15.41      
14 A" 1008 997 7.05      
15 A" 664 656 151.19      
16 A" 319 315 86.33      
17 A" 63 62 98.04      
18 A" 30 30 91.84      

Unscaled Zero Point Vibrational Energy (zpe) 12155.8 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 12017.2 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 PBEPBE_cp_opt/6-31+G**
ABC
0.66617 0.09357 0.08205

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.154 -1.996 0.000
O2 1.122 -2.115 0.000
O3 -0.981 -0.078 0.000
H4 1.273 -3.076 0.000
H5 -1.840 0.399 0.000
C6 0.000 0.876 0.000
O7 -0.214 2.073 0.000
H8 0.990 0.382 0.000

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 O7 H8
H10.97542.22871.55503.11672.87644.08552.5209
O20.97542.92780.97203.88543.19484.39582.5007
O32.22872.92783.75050.98321.36792.28322.0234
H41.55500.97203.75054.66554.15165.35863.4690
H53.11673.88540.98324.66551.90122.33422.8304
C62.87643.19481.36794.15161.90121.21561.1064
O74.08554.39582.28325.35862.33421.21562.0753
H82.52092.50072.02343.46902.83041.10642.0753

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 105.974 H1 O3 H5 149.596
H1 O3 C6 103.616 O2 H1 O3 127.603
O3 C6 O7 124.094 O3 C6 H8 109.267
H5 O3 C6 106.788 O7 C6 H8 126.640
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE_cp_opt/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.358      
4 H 0.000      
5 H 0.353      
6 C 0.241      
7 O -0.388      
8 H 0.152      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.772 -2.766 0.000 3.285
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.395 -0.105 0.000
y -0.105 -23.782 0.000
z 0.000 0.000 -25.388
Traceless
 xyz
x 3.190 -0.105 0.000
y -0.105 -0.391 0.000
z 0.000 0.000 -2.800
Polar
3z2-r2-5.599
x2-y22.387
xy-0.105
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.452 0.177 0.000
y 0.177 4.125 0.000
z 0.000 0.000 2.032


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