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

using model chemistry: CCD/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 CCD/TZVP
 hartrees
Energy at 0K-189.371719
Energy at 298.15K-189.374457
HF Energy-188.835927
Nuclear repulsion energy70.435025
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 CCD/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' 3836 3637 63.08      
2 A' 3142 2979 39.87      
3 A' 1886 1788 366.02      
4 A' 1470 1394 5.08      
5 A' 1352 1282 10.89      
6 A' 1169 1109 282.25      
7 A' 654 620 48.84      
8 A" 1081 1024 0.96      
9 A" 664 629 164.66      

Unscaled Zero Point Vibrational Energy (zpe) 7627.0 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 7230.4 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 CCD/TZVP
ABC
2.60896 0.40480 0.35043

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.421 0.000
O2 -1.027 -0.444 0.000
O3 1.155 0.114 0.000
H4 -0.376 1.447 0.000
H5 -0.648 -1.333 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5
C11.34221.19481.09291.8698
O21.34222.25121.99980.9662
O31.19482.25122.02992.3114
H41.09291.99982.02992.7934
H51.86980.96622.31142.7934

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 107.059 O2 C1 O3 124.983
O2 C1 H4 109.997 O3 C1 H4 125.020
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at CCD/TZVP
 hartrees
Energy at 0K-189.364147
Energy at 298.15K 
HF Energy-188.827164
Nuclear repulsion energy70.185618
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 CCD/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' 3893 3690 68.47      
2 A' 3053 2894 72.17      
3 A' 1925 1824 298.73      
4 A' 1488 1411 1.16      
5 A' 1325 1256 326.58      
6 A' 1143 1084 61.32      
7 A' 680 645 12.46      
8 A" 1061 1006 0.50      
9 A" 491 465 102.32      

Unscaled Zero Point Vibrational Energy (zpe) 7529.2 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 7137.7 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 CCD/TZVP
ABC
2.91995 0.39180 0.34545

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.384 0.000
O2 -0.894 -0.627 0.000
O3 1.174 0.199 0.000
H4 -0.460 1.383 0.000
H5 -1.782 -0.260 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5
C11.34971.18861.09961.8952
O21.34972.22682.05640.9616
O31.18862.22682.01802.9919
H41.09962.05642.01802.1090
H51.89520.96162.99192.1090

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 109.011 O2 C1 O3 122.504
O2 C1 H4 113.805 O3 C1 H4 123.690
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability