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

using model chemistry: B97D3/TZVP

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 B97D3/TZVP
 hartrees
Energy at 0K-189.731826
Energy at 298.15K-189.734522
HF Energy-189.731826
Nuclear repulsion energy69.747694
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 B97D3/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' 3635 3583 36.61 91.29 0.25 0.40
2 A' 2988 2945 57.16 131.12 0.28 0.43
3 A' 1770 1745 334.23 8.06 0.15 0.26
4 A' 1385 1365 1.77 9.30 0.63 0.77
5 A' 1270 1251 4.89 0.68 0.61 0.76
6 A' 1076 1060 251.56 2.50 0.28 0.43
7 A' 614 605 38.11 5.10 0.52 0.69
8 A" 1020 1005 3.87 1.57 0.75 0.86
9 A" 684 674 146.60 1.23 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7220.7 cm-1
Scaled (by 0.9856) Zero Point Vibrational Energy (zpe) 7116.7 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 B97D3/TZVP
ABC
2.58594 0.39542 0.34298

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.422 0.000
O2 -1.036 -0.453 0.000
O3 1.167 0.123 0.000
H4 -0.397 1.451 0.000
H5 -0.655 -1.351 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5
C11.35591.20511.10241.8902
O21.35592.27742.00790.9755
O31.20512.27742.05152.3441
H41.10242.00792.05152.8135
H51.89020.97552.34412.8135

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 107.207 O2 C1 O3 125.458
O2 C1 H4 109.090 O3 C1 H4 125.452
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.184      
2 O -0.258      
3 O -0.290      
4 H 0.084      
5 H 0.279      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.408 -0.409 0.000 1.466
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.265 -0.089 0.000
y -0.089 -12.843 0.000
z 0.000 0.000 -16.972
Traceless
 xyz
x -7.357 -0.089 0.000
y -0.089 6.775 0.000
z 0.000 0.000 0.582
Polar
3z2-r21.164
x2-y2-9.422
xy-0.089
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.745 0.089 0.000
y 0.089 3.250 0.000
z 0.000 0.000 1.793


<r2> (average value of r2) Å2
<r2> 37.677
(<r2>)1/2 6.138

Conformer 2 (CS)

Jump to S1C1
Energy calculated at B97D3/TZVP
 hartrees
Energy at 0K-189.724791
Energy at 298.15K 
HF Energy-189.724791
Nuclear repulsion energy69.562469
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 B97D3/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' 3690 3637 31.58 134.38 0.27 0.42
2 A' 2878 2837 105.94 121.15 0.28 0.43
3 A' 1817 1790 270.54 14.32 0.18 0.31
4 A' 1396 1375 0.26 7.49 0.67 0.80
5 A' 1236 1218 271.60 5.09 0.75 0.86
6 A' 1062 1046 68.39 8.01 0.47 0.64
7 A' 642 633 10.41 0.80 0.72 0.84
8 A" 1002 988 0.00 1.85 0.75 0.86
9 A" 537 529 91.18 1.74 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7129.5 cm-1
Scaled (by 0.9856) Zero Point Vibrational Energy (zpe) 7026.8 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 B97D3/TZVP
ABC
2.87048 0.38477 0.33929

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.388 0.000
O2 -0.900 -0.636 0.000
O3 1.184 0.205 0.000
H4 -0.476 1.392 0.000
H5 -1.799 -0.270 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5
C11.36281.19791.11091.9153
O21.36282.24682.07150.9708
O31.19792.24682.04013.0203
H41.11092.07152.04012.1241
H51.91530.97083.02032.1241

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 109.164 O2 C1 O3 122.539
O2 C1 H4 113.344 O3 C1 H4 124.118
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.176      
2 O -0.231      
3 O -0.262      
4 H 0.048      
5 H 0.269      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -3.587 1.559 0.000 3.911
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.770 -1.227 0.000
y -1.227 -17.621 0.000
z 0.000 0.000 -16.979
Traceless
 xyz
x 1.531 -1.227 0.000
y -1.227 -1.247 0.000
z 0.000 0.000 -0.284
Polar
3z2-r2-0.568
x2-y21.852
xy-1.227
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.360 0.151 0.000
y 0.151 2.848 0.000
z 0.000 0.000 1.781


<r2> (average value of r2) Å2
<r2> 38.119
(<r2>)1/2 6.174