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

using model chemistry: QCISD/daug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes CS 1A'

Conformer 1 (CS)

Jump to S1C2
Vibrational Frequencies calculated at QCISD/daug-cc-pVDZ
Rotational Constants (cm-1) from geometry optimized at QCISD/daug-cc-pVDZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/daug-cc-pVDZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at QCISD/daug-cc-pVDZ
 hartrees
Energy at 0K-189.335439
Energy at 298.15K 
HF Energy-188.788935
Nuclear repulsion energy69.453800
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 QCISD/daug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3812 3812 59.34      
2 A' 3032 3032 63.56      
3 A' 1841 1841 283.32      
4 A' 1415 1415 0.31      
5 A' 1301 1301 290.46      
6 A' 1106 1106 67.01      
7 A' 651 651 9.83      
8 A" 1028 1028 0.02      
9 A" 508 508 83.34      

Unscaled Zero Point Vibrational Energy (zpe) 7346.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7346.3 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 QCISD/daug-cc-pVDZ
ABC
2.84525 0.38417 0.33847

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/daug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.390 0.000
O2 -0.905 -0.629 0.000
O3 1.188 0.194 0.000
H4 -0.462 1.399 0.000
H5 -1.798 -0.257 0.000

Atom - Atom Distances (Å)
  C1 O2 O3 H4 H5
C11.36291.20381.11031.9112
O21.36292.24902.07620.9674
O31.20382.24902.04333.0200
H41.11032.07622.04332.1284
H51.91120.96743.02002.1284

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 109.022 O2 C1 O3 122.255
O2 C1 H4 113.785 O3 C1 H4 123.960
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability