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All results from a given calculation for CHONH2 (formamide)

using model chemistry: MP2/6-311G*

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 MP2/6-311G*
 hartrees
Energy at 0K-169.469501
Energy at 298.15K 
HF Energy-168.971916
Nuclear repulsion energy71.094798
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 MP2/6-311G*
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' 3803 3614 42.88      
2 A' 3657 3475 43.90      
3 A' 3013 2863 113.36      
4 A' 1833 1742 365.67      
5 A' 1680 1596 56.79      
6 A' 1441 1369 4.06      
7 A' 1297 1233 107.85      
8 A' 1074 1021 6.25      
9 A' 570 542 10.97      
10 A" 1050 998 2.46      
11 A" 652 620 16.93      
12 A" 232i 220i 289.89      

Unscaled Zero Point Vibrational Energy (zpe) 9919.2 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 9426.2 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 MP2/6-311G*
ABC
2.45815 0.37654 0.32652

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.417 0.000
O2 1.200 0.245 0.000
N3 -0.940 -0.570 0.000
H4 -0.461 1.424 0.000
H5 -0.639 -1.530 0.000
H6 -1.923 -0.368 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21281.36361.10742.04972.0772
O21.21282.29062.03762.55643.1832
N31.36362.29062.05111.00601.0037
H41.10742.03762.05112.95972.3124
H52.04972.55641.00602.95971.7323
H62.07723.18321.00372.31241.7323

picture of formamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 118.993 C1 N3 H6 121.932
O2 C1 N3 125.418 O2 C1 H4 122.788
N3 C1 H4 111.793 H5 N3 H6 119.075
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (Non-Planar)

Jump to S1C1
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-169.469596
Energy at 298.15K-169.473414
HF Energy-168.971793
Nuclear repulsion energy71.065501
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 MP2/6-311G*
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 3786 3598 37.26      
2 A 3644 3463 37.63      
3 A 3014 2864 111.38      
4 A 1833 1742 346.67      
5 A 1683 1599 55.12      
6 A 1444 1372 3.78      
7 A 1300 1235 103.05      
8 A 1087 1033 8.59      
9 A 1048 996 1.58      
10 A 645 613 38.08      
11 A 572 543 10.71      
12 A 310 295 293.83      

Unscaled Zero Point Vibrational Energy (zpe) 10181.8 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 9675.7 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 MP2/6-311G*
ABC
2.44132 0.37639 0.32678

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.162 0.388 0.002
O2 1.198 -0.246 0.007
N3 -1.090 -0.158 -0.043
H4 0.137 1.493 -0.002
H5 -1.167 -1.153 0.087
H6 -1.895 0.409 0.155

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21441.36621.10562.03692.0627
O21.21442.28982.03732.53453.1648
N31.36622.28982.05711.00671.0044
H41.10562.03732.05712.95152.3083
H52.03692.53451.00672.95151.7244
H62.06273.16481.00442.30831.7244

picture of formamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 117.471 C1 N3 H6 120.178
O2 C1 N3 124.970 O2 C1 H4 122.764
N3 C1 H4 112.233 H5 N3 H6 118.063
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability