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All results from a given calculation for CHONH2 (formamide)

using model chemistry: CCD/6-31G**

19 10 17 12 22

States and conformations

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

Conformer 1 (Planar)

Jump to S1C2
Energy calculated at CCD/6-31G**
 hartrees
Energy at 0K-169.432757
Energy at 298.15K 
HF Energy-168.939136
Nuclear repulsion energy71.184893
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/6-31G**
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' 3860 3619 49.00      
2 A' 3715 3483 52.47      
3 A' 3071 2880 94.73      
4 A' 1892 1774 384.09      
5 A' 1677 1573 72.73      
6 A' 1478 1386 4.46      
7 A' 1312 1230 119.56      
8 A' 1088 1020 4.89      
9 A' 575 540 13.03      
10 A" 1078 1010 0.05      
11 A" 640 600 21.12      
12 A" 153i 144i 285.17      

Unscaled Zero Point Vibrational Energy (zpe) 10116.6 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 9485.3 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 CCD/6-31G**
ABC
2.45669 0.37792 0.32753

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.421 0.000
O2 1.200 0.231 0.000
N3 -0.942 -0.561 0.000
H4 -0.445 1.427 0.000
H5 -0.645 -1.520 0.000
H6 -1.921 -0.349 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21501.36031.10042.04512.0693
O21.21502.28322.03402.54323.1741
N31.36032.28322.04951.00391.0017
H41.10042.03402.04952.95422.3099
H52.04512.54321.00392.95421.7315
H62.06933.17411.00172.30991.7315

picture of formamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.003 C1 N3 H6 121.609
O2 C1 N3 124.797 O2 C1 H4 122.832
N3 C1 H4 112.371 H5 N3 H6 119.388
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (Non-Planar)

Jump to S1C1
Energy calculated at CCD/6-31G**
 hartrees
Energy at 0K-169.432785
Energy at 298.15K-169.436478
HF Energy-168.939019
Nuclear repulsion energy71.171376
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/6-31G**
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 3848 3608 44.42      
2 A 3706 3475 47.09      
3 A 3072 2880 93.56      
4 A 1893 1775 370.67      
5 A 1679 1574 69.20      
6 A 1478 1386 4.13      
7 A 1312 1231 115.93      
8 A 1098 1029 4.73      
9 A 1073 1006 0.87      
10 A 634 594 32.99      
11 A 574 539 12.68      
12 A 214 201 291.95      

Unscaled Zero Point Vibrational Energy (zpe) 10290.8 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 9648.6 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 CCD/6-31G**
ABC
2.44500 0.37795 0.32779

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.161 0.389 0.001
O2 1.196 -0.246 0.005
N3 -1.086 -0.158 -0.035
H4 0.137 1.489 -0.000
H5 -1.169 -1.154 0.070
H6 -1.898 0.408 0.124

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21471.36251.10042.03832.0628
O21.21472.28422.03342.53393.1648
N31.36252.28422.05231.00471.0024
H41.10042.03342.05232.94922.3082
H52.03832.53391.00472.94921.7243
H62.06283.16481.00242.30821.7243

picture of formamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 118.089 C1 N3 H6 120.689
O2 C1 N3 124.732 O2 C1 H4 122.801
N3 C1 H4 112.449 H5 N3 H6 118.434
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability