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All results from a given calculation for CHONH2 (formamide)

using model chemistry: CCSD/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Planar 1A'
1 2 no Non-Planar 1A

Conformer 1 (Planar)

Jump to S1C2
Energy calculated at CCSD/cc-pVQZ
 hartrees
Energy at 0K-169.666947
Energy at 298.15K-169.670418
HF Energy-169.015684
Nuclear repulsion energy71.578209
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 CCSD/cc-pVQZ
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' 3792 3604 52.73      
2 A' 3650 3469 50.68      
3 A' 3022 2872 75.46      
4 A' 1840 1749 420.57      
5 A' 1644 1563 62.92      
6 A' 1447 1375 5.23      
7 A' 1295 1231 121.68      
8 A' 1075 1021 6.24      
9 A' 576 548 12.04      
10 A" 1073 1020 1.76      
11 A" 638 607 14.02      
12 A" 74 71 215.95      

Unscaled Zero Point Vibrational Energy (zpe) 10062.7 cm-1
Scaled (by 0.9505) Zero Point Vibrational Energy (zpe) 9564.6 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 CCSD/cc-pVQZ
ABC
2.47598 0.38258 0.33137

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.418 0.000
O2 1.191 0.234 0.000
N3 -0.934 -0.562 0.000
H4 -0.444 1.424 0.000
H5 -0.639 -1.520 0.000
H6 -1.909 -0.346 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.20521.35391.09912.04052.0563
O21.20522.26892.02232.53443.1538
N31.35392.26892.04531.00180.9991
H41.09912.02232.04532.94972.2972
H52.04052.53441.00182.94971.7295
H62.05633.15380.99912.29721.7295

picture of formamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.283 C1 N3 H6 121.094
O2 C1 N3 124.796 O2 C1 H4 122.642
N3 C1 H4 112.562 H5 N3 H6 119.623
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (Non-Planar)

Jump to S1C1
Energy calculated at CCSD/cc-pVQZ
 hartrees
Energy at 0K-169.666947
Energy at 298.15K 
HF Energy-169.015683
Nuclear repulsion energy71.579957
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 CCSD/cc-pVQZ
Rotational Constants (cm-1) from geometry optimized at CCSD/cc-pVQZ
ABC
2.47535 0.38264 0.33141

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/cc-pVQZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.162 0.386 0.000
O2 1.189 -0.245 0.000
N3 -1.078 -0.157 -0.001
H4 0.141 1.485 0.000
H5 -1.177 -1.154 0.002
H6 -1.894 0.420 0.003

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.20531.35381.09912.04032.0563
O21.20532.26872.02232.53383.1537
N31.35382.26872.04541.00180.9991
H41.09912.02232.04542.94972.2975
H52.04032.53381.00182.94971.7296
H62.05633.15370.99912.29751.7296

picture of formamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.267 C1 N3 H6 121.102
O2 C1 N3 124.781 O2 C1 H4 122.638
N3 C1 H4 112.581 H5 N3 H6 119.630
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability