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All results from a given calculation for CHONH2 (formamide)

using model chemistry: MP3=FULL/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 MP3=FULL/6-31G*
 hartrees
Energy at 0K-169.412189
Energy at 298.15K 
HF Energy-168.929361
Nuclear repulsion energy71.217798
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 MP3=FULL/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' 3800 3565 52.65      
2 A' 3668 3442 55.74      
3 A' 3063 2874 88.17      
4 A' 1902 1785 398.19      
5 A' 1672 1568 85.43      
6 A' 1476 1385 5.10      
7 A' 1321 1240 117.52      
8 A' 1094 1027 4.25      
9 A' 578 543 13.35      
10 A" 1075 1009 0.17      
11 A" 646 606 22.58      
12 A" 164i 154i 310.15      

Unscaled Zero Point Vibrational Energy (zpe) 10065.3 cm-1
Scaled (by 0.9383) Zero Point Vibrational Energy (zpe) 9444.3 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 MP3=FULL/6-31G*
ABC
2.45006 0.37911 0.32831

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.420 0.000
O2 1.198 0.237 0.000
N3 -0.939 -0.565 0.000
H4 -0.450 1.430 0.000
H5 -0.640 -1.529 0.000
H6 -1.925 -0.360 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21221.36071.10592.05142.0766
O21.21222.28322.03462.54993.1799
N31.36072.28322.05401.00941.0071
H41.10592.03462.05402.96522.3188
H52.05142.54991.00942.96521.7375
H62.07663.17991.00712.31881.7375

picture of formamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.137 C1 N3 H6 121.856
O2 C1 N3 124.996 O2 C1 H4 122.658
N3 C1 H4 112.346 H5 N3 H6 119.007
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (Non-Planar)

Jump to S1C1
Energy calculated at MP3=FULL/6-31G*
 hartrees
Energy at 0K-169.412188
Energy at 298.15K 
HF Energy-168.929355
Nuclear repulsion energy71.218635
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 MP3=FULL/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 3800 3566 52.77      
2 A 3669 3442 55.77      
3 A 3064 2875 88.00      
4 A 1901 1784 398.39      
5 A 1671 1568 85.26      
6 A 1476 1385 5.12      
7 A 1322 1240 117.28      
8 A 1094 1027 4.19      
9 A 1075 1009 0.17      
10 A 646 606 22.65      
11 A 578 543 13.38      
12 A 165i 155i 310.07      

Unscaled Zero Point Vibrational Energy (zpe) 10065.2 cm-1
Scaled (by 0.9383) Zero Point Vibrational Energy (zpe) 9444.2 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 MP3=FULL/6-31G*
ABC
2.45007 0.37914 0.32833

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.163 0.387 -0.000
O2 -1.197 -0.246 0.000
N3 1.085 -0.157 -0.000
H4 -0.140 1.492 0.000
H5 1.183 -1.161 0.001
H6 1.914 0.415 0.001

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21221.36071.10592.05142.0766
O21.21222.28332.03452.55003.1800
N31.36072.28332.05401.00941.0071
H41.10592.03452.05402.96522.3188
H52.05142.55001.00942.96521.7375
H62.07663.18001.00712.31881.7375

picture of formamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.139 C1 N3 H6 121.860
O2 C1 N3 125.001 O2 C1 H4 122.656
N3 C1 H4 112.343 H5 N3 H6 119.001
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability