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

using model chemistry: TPSSh/aug-cc-pVTZ

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 TPSSh/aug-cc-pVTZ
 hartrees
Energy at 0K-189.840894
Energy at 298.15K-189.843604
HF Energy-189.840894
Nuclear repulsion energy70.082959
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 TPSSh/aug-cc-pVTZ
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' 3689 3560 51.36 78.00 0.17 0.30
2 A' 3051 2945 41.62 124.27 0.25 0.40
3 A' 1797 1735 358.78 13.63 0.10 0.19
4 A' 1400 1352 2.10 4.79 0.63 0.77
5 A' 1293 1248 10.26 2.50 0.23 0.38
6 A' 1111 1073 250.39 2.54 0.26 0.41
7 A' 616 595 41.53 3.36 0.32 0.49
8 A" 1044 1007 3.43 1.02 0.75 0.86
9 A" 681 658 131.01 0.49 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7341.4 cm-1
Scaled (by 0.9652) Zero Point Vibrational Energy (zpe) 7085.9 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 TPSSh/aug-cc-pVTZ
ABC
2.58969 0.40051 0.34687

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.422 0.000
O2 -1.032 -0.445 0.000
O3 1.161 0.114 0.000
H4 -0.383 1.450 0.000
H5 -0.655 -1.341 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5
C11.34771.20151.09651.8814
O21.34772.26322.00240.9725
O31.20152.26322.04202.3276
H41.09652.00242.04202.8043
H51.88140.97252.32762.8043

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 107.258 O2 C1 O3 125.092
O2 C1 H4 109.585 O3 C1 H4 125.323
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.174      
2 O -0.233      
3 O -0.474      
4 H 0.346      
5 H 0.188      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.504 -0.288 0.000 1.531
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.113 0.114 0.000
y 0.114 3.643 0.000
z 0.000 0.000 2.412


<r2> (average value of r2) Å2
<r2> 37.383
(<r2>)1/2 6.114

Conformer 2 (CS)

Jump to S1C1
Energy calculated at TPSSh/aug-cc-pVTZ
 hartrees
Energy at 0K-189.834556
Energy at 298.15K 
HF Energy-189.834556
Nuclear repulsion energy69.885515
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 TPSSh/aug-cc-pVTZ
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' 3748 3617 46.79 114.89 0.20 0.34
2 A' 2964 2861 76.59 119.53 0.24 0.39
3 A' 1841 1777 294.81 17.42 0.17 0.29
4 A' 1409 1360 0.35 3.75 0.55 0.71
5 A' 1264 1220 299.29 1.94 0.61 0.76
6 A' 1099 1061 54.19 10.11 0.35 0.52
7 A' 649 626 9.05 0.34 0.51 0.67
8 A" 1023 987 0.14 1.27 0.75 0.86
9 A" 539 520 80.19 0.87 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7267.7 cm-1
Scaled (by 0.9652) Zero Point Vibrational Energy (zpe) 7014.8 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 TPSSh/aug-cc-pVTZ
ABC
2.88572 0.38908 0.34285

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.388 0.000
O2 -0.897 -0.627 0.000
O3 1.179 0.196 0.000
H4 -0.465 1.388 0.000
H5 -1.795 -0.267 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5
C11.35431.19481.10301.9108
O21.35432.23362.06050.9677
O31.19482.23362.03103.0104
H41.10302.06052.03102.1228
H51.91080.96773.01042.1228

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 109.632 O2 C1 O3 122.254
O2 C1 H4 113.570 O3 C1 H4 124.176
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.214      
2 O -0.240      
3 O -0.459      
4 H 0.298      
5 H 0.187      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -3.563 1.497 0.000 3.864
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.620 0.134 0.000
y 0.134 3.365 0.000
z 0.000 0.000 2.428


<r2> (average value of r2) Å2
<r2> 37.871
(<r2>)1/2 6.154