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

using model chemistry: PBEPBEultrafine_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 PBEPBEultrafine_cp_opt/6-31+G**
 hartrees
Energy at 0K-265.928558
Energy at 298.15K-265.931927
Nuclear repulsion energy69.276099
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 PBEPBEultrafine_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 3824 3780 81.18      
2 A 3686 3644 29.91      
3 A 3614 3573 46.97      
4 A 3032 2997 7.69      
5 A 1768 1748 336.21      
6 A 1570 1552 128.51      
7 A 1357 1342 8.17      
8 A 1229 1215 5.19      
9 A 1072 1060 259.49      
10 A 1009 997 7.09      
11 A 663 656 151.17      
12 A 597 591 34.67      
13 A 320 316 100.22      
14 A 265 262 161.45      
15 A 126 125 2.03      
16 A 74 73 27.26      
17 A 58 58 52.42      
18 A 25 25 123.21      

Unscaled Zero Point Vibrational Energy (zpe) 12144.5 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 12006.0 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 PBEPBEultrafine_cp_opt/6-31+G**
ABC
0.66602 0.09349 0.08200

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.930 0.528 -0.005
O2 2.372 -0.342 -0.022
O3 -0.258 0.949 0.004
H4 3.318 -0.164 0.113
H5 -0.996 1.598 -0.022
C6 -0.825 -0.296 0.012
O7 -2.024 -0.498 -0.007
H8 -0.026 -1.061 0.039

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 O7 H8
H10.97542.22771.55483.11542.87554.08442.5203
O20.97542.92920.97203.88633.19754.39812.5043
O32.22772.92923.74590.98321.36802.28322.0233
H41.55480.97203.74594.66124.14615.35303.4630
H53.11543.88630.98324.66121.90132.33422.8304
C62.87553.19751.36804.14611.90131.21551.1065
O74.08444.39812.28325.35302.33421.21552.0754
H82.52032.50432.02333.46302.83041.10652.0754

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 105.953 H1 O3 H5 149.555
H1 O3 C6 103.612 O2 H1 O3 127.842
O3 C6 O7 124.094 O3 C6 H8 109.256
H5 O3 C6 106.788 O7 C6 H8 126.650
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine_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
  1.981 2.592 0.283 3.275
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.597 -0.864 0.997
y -0.864 -21.736 -0.163
z 0.997 -0.163 -25.346
Traceless
 xyz
x -0.056 -0.864 0.997
y -0.864 2.736 -0.163
z 0.997 -0.163 -2.680
Polar
3z2-r2-5.359
x2-y2-1.861
xy-0.864
xz0.997
yz-0.163


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.931 0.351 -0.006
y 0.351 3.644 -0.003
z -0.006 -0.003 2.031


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