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All results from a given calculation for CHONH2 (formamide)

using model chemistry: G3

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 G3
 hartrees
Energy at 0K-169.785123
Energy at 298.15K-169.780170
HF Energy-168.930703
Nuclear repulsion energy72.072080
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 HF/6-31G*
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' 3973 3743 63.48      
2 A' 3838 3616 57.94      
3 A' 3214 3028 103.76      
4 A' 1999 1883 514.87      
5 A' 1789 1686 84.03      
6 A' 1563 1473 10.33      
7 A' 1379 1299 155.07      
8 A' 1160 1093 8.34      
9 A' 618 582 17.30      
10 A" 1183 1114 2.51      
11 A" 674 635 32.50      
12 A" 109 103 334.98      

Unscaled Zero Point Vibrational Energy (zpe) 10749.2 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 10127.9 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 MP2=FULL/6-31G*
ABC
2.43485 0.37536 0.32522

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.422 0.000
O2 1.207 0.223 0.000
N3 -0.947 -0.555 0.000
H4 -0.442 1.434 0.000
H5 -0.653 -1.522 0.000
H6 -1.933 -0.341 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.22361.36061.10462.05032.0776
O21.22362.29072.04642.55053.1902
N31.36062.29072.05211.01061.0084
H41.10462.04642.05212.96332.3176
H52.05032.55051.01062.96331.7413
H62.07763.19021.00842.31761.7413

picture of formamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.266 C1 N3 H6 121.831
O2 C1 N3 124.961 O2 C1 H4 122.340
N3 C1 H4 112.700 H5 N3 H6 118.903
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (Non-Planar)

Jump to S1C1
Energy calculated at G3
 hartrees
Energy at 0K-169.785123
Energy at 298.15K-169.788844
HF Energy-168.930703
Nuclear repulsion energy72.074983
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 HF/6-31G*
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 3973 3743 63.49      
2 A 3838 3616 57.94      
3 A 3214 3029 103.76      
4 A 1999 1883 514.84      
5 A 1789 1686 84.05      
6 A 1563 1473 10.33      
7 A 1379 1299 155.07      
8 A 1183 1114 2.51      
9 A 1160 1093 8.34      
10 A 674 635 32.49      
11 A 618 582 17.30      
12 A 108 102 335.00      

Unscaled Zero Point Vibrational Energy (zpe) 10748.8 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 10127.5 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 MP2=FULL/6-31G*
ABC
2.42496 0.37541 0.32543

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.158 0.392 0.001
O2 1.202 -0.246 0.005
N3 -1.088 -0.160 -0.031
H4 0.129 1.496 -0.001
H5 -1.168 -1.163 0.062
H6 -1.912 0.405 0.110

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.22361.36231.10462.04472.0722
O21.22362.29162.04582.54263.1827
N31.36232.29162.05471.01121.0089
H41.10462.04582.05472.95952.3165
H52.04472.54261.01122.95951.7362
H62.07223.18271.00892.31651.7362

picture of formamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 112.151 C1 N3 H6 114.190
O2 C1 N3 124.198 O2 C1 H4 122.944
N3 C1 H4 112.822 H5 N3 H6 112.127
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability