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

using model chemistry: wB97X-D/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at wB97X-D/TZVP
 hartrees
Energy at 0K-266.216037
Energy at 298.15K-266.219765
HF Energy-266.216037
Nuclear repulsion energy117.184189
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 wB97X-D/TZVP
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 3973 3795 86.40      
2 A 3845 3672 44.84      
3 A 3814 3642 73.10      
4 A 3110 2970 11.61      
5 A 1867 1783 379.98      
6 A 1619 1546 73.41      
7 A 1451 1386 8.10      
8 A 1304 1245 4.70      
9 A 1144 1092 298.96      
10 A 1079 1031 2.13      
11 A 669 639 174.97      
12 A 643 614 46.16      
13 A 406 388 196.19      
14 A 241 230 120.90      
15 A 155 148 100.72      
16 A 122 117 21.53      
17 A 79 76 38.98      
18 A 54 52 3.22      

Unscaled Zero Point Vibrational Energy (zpe) 12787.3 cm-1
Scaled (by 0.955) Zero Point Vibrational Energy (zpe) 12211.9 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 wB97X-D/TZVP
ABC
0.70071 0.09402 0.08325

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/TZVP

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.963 0.523 -0.121
O2 2.425 -0.317 -0.083
O3 -0.298 0.948 0.008
H4 3.040 -0.246 0.646
H5 -1.019 1.590 -0.005
C6 -0.829 -0.287 0.008
O7 -2.000 -0.519 0.004
H8 -0.025 -1.033 0.010

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 C6 O7 H8
H10.95952.30391.52923.16882.90924.09872.5271
O20.95953.00370.95693.93723.25474.42962.5535
O32.30393.00373.60190.96541.34412.24651.9992
H41.52920.95693.60194.50183.92095.08753.2274
H53.16883.93720.96544.50181.88662.32572.8045
C62.90923.25471.34413.92091.88661.19371.0962
O74.09874.42962.24655.08752.32571.19372.0404
H82.52712.55351.99923.22742.80451.09622.0404

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 105.874 H1 O3 H5 148.727
H1 O3 C6 102.578 O2 H1 O3 129.194
O3 C6 O7 124.450 O3 C6 H8 109.598
H5 O3 C6 108.438 O7 C6 H8 125.952
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.283      
2 O -0.552      
3 O -0.345      
4 H 0.273      
5 H 0.300      
6 C 0.239      
7 O -0.330      
8 H 0.131      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.403 2.455 1.212 3.076
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.172 -1.187 4.138
y -1.187 -21.002 -0.585
z 4.138 -0.585 -23.517
Traceless
 xyz
x -4.913 -1.187 4.138
y -1.187 4.343 -0.585
z 4.138 -0.585 0.570
Polar
3z2-r21.140
x2-y2-6.170
xy-1.187
xz4.138
yz-0.585


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.954 0.180 0.204
y 0.180 3.900 -0.034
z 0.204 -0.034 2.566


<r2> (average value of r2) Å2
<r2> 125.497
(<r2>)1/2 11.203