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All results from a given calculation for CHONH2 (formamide)

using model chemistry: MP2/6-31G

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 MP2/6-31G
 hartrees
Energy at 0K-169.179443
Energy at 298.15K-169.183395
HF Energy-168.850816
Nuclear repulsion energy69.744340
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 MP2/6-31G
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' 3762 3599 38.60      
2 A' 3613 3457 46.23      
3 A' 3060 2927 95.76      
4 A' 1731 1656 265.19      
5 A' 1680 1608 53.70      
6 A' 1445 1383 16.95      
7 A' 1296 1240 109.15      
8 A' 1074 1028 7.75      
9 A' 564 540 10.79      
10 A" 1033 989 1.48      
11 A" 641 613 135.16      
12 A" 459 439 311.56      

Unscaled Zero Point Vibrational Energy (zpe) 10179.4 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 9739.7 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 MP2/6-31G
ABC
2.37083 0.36194 0.31400

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.430 0.000
O2 1.238 0.198 0.000
N3 -0.976 -0.542 0.000
H4 -0.404 1.454 0.000
H5 -0.707 -1.517 0.000
H6 -1.958 -0.307 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.25941.37741.10112.07072.0916
O21.25942.33482.06712.59283.2353
N31.37742.33482.07631.01161.0091
H41.10112.06712.07632.98612.3480
H52.07072.59281.01162.98611.7407
H62.09163.23531.00912.34801.7407

picture of formamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.383 C1 N3 H6 121.658
O2 C1 N3 124.561 O2 C1 H4 122.113
N3 C1 H4 113.326 H5 N3 H6 118.959
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (Non-Planar)

Jump to S1C1
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-169.179443
Energy at 298.15K-169.183396
HF Energy-168.850816
Nuclear repulsion energy69.744950
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 MP2/6-31G
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 3762 3599 38.62      
2 A 3613 3457 46.23      
3 A 3059 2927 95.82      
4 A 1731 1656 265.16      
5 A 1680 1608 53.79      
6 A 1446 1383 16.99      
7 A 1296 1240 109.08      
8 A 1075 1028 7.72      
9 A 1034 989 1.48      
10 A 641 613 135.73      
11 A 564 540 10.79      
12 A 459 439 310.95      

Unscaled Zero Point Vibrational Energy (zpe) 10179.7 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 9740.0 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 MP2/6-31G
ABC
2.37131 0.36193 0.31401

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.151 0.402 -0.000
O2 -1.229 -0.250 -0.000
N3 1.105 -0.164 0.000
H4 -0.133 1.503 0.000
H5 1.195 -1.172 0.000
H6 1.941 0.401 -0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.25941.37731.10122.07052.0917
O21.25942.33492.06702.59273.2355
N31.37732.33492.07621.01161.0091
H41.10122.06702.07622.98602.3483
H52.07052.59271.01162.98601.7407
H62.09173.23551.00912.34831.7407

picture of formamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.366 C1 N3 H6 121.683
O2 C1 N3 124.571 O2 C1 H4 122.103
N3 C1 H4 113.326 H5 N3 H6 118.951
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability