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All results from a given calculation for HCOOH (Formic acid)

using model chemistry: wB97X-D/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
1 2 no CS 1A'

Conformer 1 (CS)

Jump to S1C2
Energy calculated at wB97X-D/SDD
 hartrees
Energy at 0K-189.665956
Energy at 298.15K-189.668642
HF Energy-189.665956
Nuclear repulsion energy68.874256
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/SDD
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' 3735 3735 45.57 81.43 0.28 0.44
2 A' 3195 3195 37.46 98.15 0.26 0.41
3 A' 1745 1745 355.19 6.50 0.22 0.36
4 A' 1421 1421 3.29 10.99 0.58 0.73
5 A' 1294 1294 10.15 1.54 0.54 0.70
6 A' 1094 1094 285.77 4.52 0.18 0.31
7 A' 602 602 52.63 5.56 0.58 0.74
8 A" 1053 1053 10.87 0.53 0.75 0.86
9 A" 678 678 239.99 2.23 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7408.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7408.0 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 wB97X-D/SDD
ABC
2.50317 0.38611 0.33451

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.435 0.000
O2 -1.044 -0.451 0.000
O3 1.186 0.115 0.000
H4 -0.390 1.455 0.000
H5 -0.744 -1.382 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5
C11.36911.22821.09181.9633
O21.36912.30042.01480.9786
O31.22822.30042.06832.4419
H41.09182.01482.06832.8589
H51.96330.97862.44192.8589

picture of Formic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H5 112.425 O2 C1 O3 124.583
O2 C1 H4 109.394 O3 C1 H4 126.023
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.093      
2 O -0.445      
3 O -0.266      
4 H 0.217      
5 H 0.400      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.513 -0.363 0.000 1.556
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.579 0.099 0.000
y 0.099 -11.922 0.000
z 0.000 0.000 -17.006
Traceless
 xyz
x -9.115 0.099 0.000
y 0.099 8.370 0.000
z 0.000 0.000 0.745
Polar
3z2-r21.489
x2-y2-11.657
xy0.099
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.261 0.103 0.000
y 0.103 2.595 0.000
z 0.000 0.000 1.213


<r2> (average value of r2) Å2
<r2> 38.497
(<r2>)1/2 6.205

Conformer 2 (CS)

Jump to S1C1
Energy calculated at wB97X-D/SDD
 hartrees
Energy at 0K-189.655840
Energy at 298.15K 
HF Energy-189.655840
Nuclear repulsion energy68.712841
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/SDD
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' 3781 3781 47.38 111.71 0.29 0.45
2 A' 3056 3056 85.64 93.24 0.29 0.45
3 A' 1803 1803 293.96 9.62 0.16 0.27
4 A' 1432 1432 0.12 9.76 0.65 0.79
5 A' 1192 1192 330.26 6.80 0.68 0.81
6 A' 1099 1099 71.92 8.76 0.32 0.48
7 A' 635 635 10.20 1.49 0.66 0.80
8 A" 1024 1024 0.85 0.49 0.75 0.86
9 A" 493 493 154.76 3.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7257.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7257.3 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/SDD
ABC
2.82340 0.37467 0.33078

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.399 0.000
O2 -0.915 -0.629 0.000
O3 1.202 0.195 0.000
H4 -0.454 1.404 0.000
H5 -1.843 -0.333 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5
C11.37651.21961.10231.9836
O21.37652.27232.08430.9743
O31.21962.27232.05063.0913
H41.10232.08432.05062.2242
H51.98360.97433.09132.2242

picture of Formic acid state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 H5 113.997 O2 C1 O3 122.033
O2 C1 H4 114.000 O3 C1 H4 123.967
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.091      
2 O -0.430      
3 O -0.226      
4 H 0.179      
5 H 0.386      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -4.200 2.205 0.000 4.744
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.619 -1.428 0.000
y -1.428 -17.649 0.000
z 0.000 0.000 -16.996
Traceless
 xyz
x 1.703 -1.428 0.000
y -1.428 -1.341 0.000
z 0.000 0.000 -0.361
Polar
3z2-r2-0.723
x2-y22.029
xy-1.428
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.871 0.179 0.000
y 0.179 2.163 0.000
z 0.000 0.000 1.213


<r2> (average value of r2) Å2
<r2> 38.843
(<r2>)1/2 6.232