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

using model chemistry: B2PLYP=FULLultrafine/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

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

Conformer 1 (CS)

Jump to S1C2
Energy calculated at B2PLYP=FULLultrafine/6-311+G(3df,2p)
 hartrees
Energy at 0K-189.731061
Energy at 298.15K 
HF Energy-189.504879
Nuclear repulsion energy70.307973
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 B2PLYP=FULLultrafine/6-311+G(3df,2p)
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' 3763 3763 68.58 68.66 0.18 0.30
2 A' 3094 3094 36.25 113.03 0.25 0.40
3 A' 1806 1806 355.76 13.78 0.13 0.23
4 A' 1412 1412 2.01 5.15 0.56 0.72
5 A' 1304 1304 10.59 1.95 0.22 0.36
6 A' 1130 1130 261.36 2.95 0.19 0.33
7 A' 630 630 42.34 3.39 0.34 0.51
8 A" 1058 1058 2.17 0.92 0.75 0.86
9 A" 682 682 139.37 0.46 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7438.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7438.8 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 B2PLYP=FULLultrafine/6-311+G(3df,2p)
ABC
2.60750 0.40301 0.34906

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.421 0.000
O2 -1.029 -0.441 0.000
O3 1.158 0.112 0.000
H4 -0.377 1.447 0.000
H5 -0.657 -1.335 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5
C11.34241.19871.09301.8749
O21.34242.25611.99740.9679
O31.19872.25612.03452.3217
H41.09301.99742.03452.7959
H51.87490.96792.32172.7959

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 107.382 O2 C1 O3 125.110
O2 C1 H4 109.777 O3 C1 H4 125.114
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at B2PLYP=FULLultrafine/6-311+G(3df,2p)
 hartrees
Energy at 0K-189.724395
Energy at 298.15K 
HF Energy-189.497946
Nuclear repulsion energy70.104084
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 B2PLYP=FULLultrafine/6-311+G(3df,2p)
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' 3829 3829 67.31 98.97 0.21 0.34
2 A' 3005 3005 69.04 109.95 0.25 0.39
3 A' 1850 1850 291.48 16.94 0.18 0.30
4 A' 1424 1424 0.23 4.44 0.51 0.68
5 A' 1277 1277 313.97 1.51 0.74 0.85
6 A' 1112 1112 50.14 9.19 0.33 0.49
7 A' 661 661 9.83 0.73 0.44 0.61
8 A" 1039 1039 0.00 1.19 0.75 0.86
9 A" 536 536 85.80 0.58 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7366.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7366.5 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 B2PLYP=FULLultrafine/6-311+G(3df,2p)
ABC
2.91627 0.39099 0.34476

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.385 0.000
O2 -0.895 -0.624 0.000
O3 1.177 0.196 0.000
H4 -0.463 1.383 0.000
H5 -1.790 -0.268 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5
C11.34901.19191.09961.9051
O21.34902.22822.05270.9629
O31.19192.22822.02413.0025
H41.09962.05272.02412.1176
H51.90510.96293.00252.1176

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 109.858 O2 C1 O3 122.433
O2 C1 H4 113.531 O3 C1 H4 124.036
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability