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All results from a given calculation for CHONH2 (formamide)

using model chemistry: CID/3-21G

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 CID/3-21G
 hartrees
Energy at 0K-168.281825
Energy at 298.15K-168.285817
HF Energy-167.983694
Nuclear repulsion energy70.571335
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 CID/3-21G
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' 3757 3500 35.85      
2 A' 3627 3379 41.52      
3 A' 3044 2836 95.20      
4 A' 1814 1690 291.17      
5 A' 1737 1618 49.07      
6 A' 1503 1401 8.56      
7 A' 1299 1210 136.49      
8 A' 1099 1023 12.00      
9 A' 589 549 11.82      
10 A" 1117 1040 0.49      
11 A" 652 607 138.45      
12 A" 452 421 290.20      

Unscaled Zero Point Vibrational Energy (zpe) 10344.5 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 9636.9 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 CID/3-21G
ABC
2.45632 0.36914 0.32091

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.420 0.000
O2 1.216 0.233 0.000
N3 -0.954 -0.562 0.000
H4 -0.448 1.423 0.000
H5 -0.669 -1.529 0.000
H6 -1.936 -0.345 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.23051.36871.09822.06072.0817
O21.23052.31062.04612.57993.2046
N31.36872.31062.04771.00861.0061
H41.09822.04612.04772.96002.3103
H52.06072.57991.00862.96001.7347
H62.08173.20461.00612.31031.7347

picture of formamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.418 C1 N3 H6 121.718
O2 C1 N3 125.403 O2 C1 H4 122.853
N3 C1 H4 111.744 H5 N3 H6 118.864
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (Non-Planar)

Jump to S1C1
Energy calculated at CID/3-21G
 hartrees
Energy at 0K-168.281825
Energy at 298.15K-168.285817
HF Energy-167.983692
Nuclear repulsion energy70.571458
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 CID/3-21G
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 3757 3500 35.89      
2 A 3627 3379 41.53      
3 A 3044 2836 95.17      
4 A 1814 1690 291.59      
5 A 1737 1618 48.64      
6 A 1503 1401 8.62      
7 A 1299 1210 136.48      
8 A 1117 1040 0.49      
9 A 1099 1024 11.89      
10 A 652 608 139.01      
11 A 589 549 11.82      
12 A 452 421 289.60      

Unscaled Zero Point Vibrational Energy (zpe) 10344.7 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 9637.2 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 CID/3-21G
ABC
2.45638 0.36915 0.32092

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.159 0.389 -0.000
O2 -1.214 -0.244 0.000
N3 1.095 -0.159 -0.000
H4 -0.123 1.487 -0.000
H5 1.197 -1.163 -0.000
H6 1.923 0.413 0.001

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.23061.36851.09822.06052.0817
O21.23062.31052.04612.57973.2047
N31.36852.31052.04771.00861.0061
H41.09822.04612.04772.96002.3107
H52.06052.57971.00862.96001.7346
H62.08173.20471.00612.31071.7346

picture of formamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.406 C1 N3 H6 121.740
O2 C1 N3 125.403 O2 C1 H4 122.843
N3 C1 H4 111.754 H5 N3 H6 118.854
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability