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

using model chemistry: B97D3/6-31G

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 B97D3/6-31G
 hartrees
Energy at 0K-189.584828
Energy at 298.15K-189.587492
HF Energy-189.584828
Nuclear repulsion energy68.318209
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 B97D3/6-31G
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' 3477 3477 13.32 104.25 0.31 0.47
2 A' 3086 3086 47.41 125.62 0.28 0.44
3 A' 1686 1686 240.89 4.12 0.21 0.34
4 A' 1384 1384 4.47 12.22 0.66 0.80
5 A' 1268 1268 5.52 0.98 0.64 0.78
6 A' 1028 1028 238.48 3.29 0.20 0.33
7 A' 588 588 41.85 6.48 0.63 0.77
8 A" 1012 1012 11.32 1.68 0.75 0.86
9 A" 686 686 190.41 4.03 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7106.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7106.5 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 B97D3/6-31G
ABC
2.49695 0.37812 0.32839

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.435 0.000
O2 -1.056 -0.461 0.000
O3 1.195 0.126 0.000
H4 -0.406 1.454 0.000
H5 -0.712 -1.390 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5
C11.38471.23461.09621.9593
O21.38472.32642.02200.9903
O31.23462.32642.07962.4370
H41.09622.02202.07962.8601
H51.95930.99032.43702.8601

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 110.056 O2 C1 O3 125.183
O2 C1 H4 108.618 O3 C1 H4 126.199
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.322      
2 O -0.501      
3 O -0.371      
4 H 0.172      
5 H 0.378      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.289 -0.502 0.000 1.383
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.728 0.052 0.000
y 0.052 -12.313 0.000
z 0.000 0.000 -16.811
Traceless
 xyz
x -8.166 0.052 0.000
y 0.052 7.457 0.000
z 0.000 0.000 0.709
Polar
3z2-r21.418
x2-y2-10.416
xy0.052
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.315 0.154 0.000
y 0.154 2.882 0.000
z 0.000 0.000 1.100


<r2> (average value of r2) Å2
<r2> 38.823
(<r2>)1/2 6.231

Conformer 2 (CS)

Jump to S1C1
Energy calculated at B97D3/6-31G
 hartrees
Energy at 0K-189.575944
Energy at 298.15K 
HF Energy-189.575944
Nuclear repulsion energy68.227609
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 B97D3/6-31G
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' 3516 3516 10.71 149.33 0.30 0.46
2 A' 2949 2949 100.87 107.00 0.31 0.47
3 A' 1749 1749 193.15 8.13 0.17 0.28
4 A' 1407 1407 1.06 11.00 0.68 0.81
5 A' 1184 1184 236.99 9.44 0.75 0.86
6 A' 1045 1045 91.17 8.79 0.32 0.48
7 A' 619 619 9.74 1.24 0.75 0.86
8 A" 993 993 0.08 2.15 0.75 0.86
9 A" 526 526 123.90 4.35 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6993.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 6993.8 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 B97D3/6-31G
ABC
2.76942 0.36984 0.32627

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.402 0.000
O2 -0.921 -0.639 0.000
O3 1.209 0.199 0.000
H4 -0.463 1.407 0.000
H5 -1.848 -0.304 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5
C11.39001.22641.10631.9786
O21.39002.28902.09670.9858
O31.22642.28902.06303.0986
H41.10632.09672.06302.2019
H51.97860.98583.09862.2019

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 111.645 O2 C1 O3 121.937
O2 C1 H4 113.788 O3 C1 H4 124.275
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.335      
2 O -0.495      
3 O -0.344      
4 H 0.129      
5 H 0.375      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -3.748 1.819 0.000 4.166
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.384 -1.209 0.000
y -1.209 -17.649 0.000
z 0.000 0.000 -16.810
Traceless
 xyz
x 1.846 -1.209 0.000
y -1.209 -1.552 0.000
z 0.000 0.000 -0.293
Polar
3z2-r2-0.587
x2-y22.265
xy-1.209
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.065 0.181 0.000
y 0.181 2.352 0.000
z 0.000 0.000 1.099


<r2> (average value of r2) Å2
<r2> 39.117
(<r2>)1/2 6.254