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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-169.494388
Energy at 298.15K 
HF Energy-168.980203
Nuclear repulsion energy71.087784
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' 3796 3607 49.74      
2 A' 3649 3467 48.97      
3 A' 3005 2855 112.80      
4 A' 1832 1740 351.48      
5 A' 1629 1548 62.03      
6 A' 1442 1370 3.53      
7 A' 1284 1220 106.67      
8 A' 1057 1004 4.41      
9 A' 565 537 11.04      
10 A" 1059 1006 1.84      
11 A" 644 612 13.59      
12 A" 262i 249i 245.20      

Unscaled Zero Point Vibrational Energy (zpe) 9849.4 cm-1
Scaled (by 0.9502) Zero Point Vibrational Energy (zpe) 9358.9 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 MP2/6-311G**
ABC
2.45442 0.37662 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 0.420 0.000
O2 1.200 0.239 0.000
N3 -0.940 -0.568 0.000
H4 -0.462 1.425 0.000
H5 -0.637 -1.528 0.000
H6 -1.922 -0.357 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21371.36361.10612.05002.0734
O21.21372.28712.04192.54953.1786
N31.36362.28712.04951.00691.0044
H41.10612.04192.04952.95862.3042
H52.05002.54951.00692.95861.7380
H62.07343.17861.00442.30421.7380

picture of formamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 118.948 C1 N3 H6 121.481
O2 C1 N3 124.988 O2 C1 H4 123.269
N3 C1 H4 111.742 H5 N3 H6 119.571
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-169.494553
Energy at 298.15K-169.498406
HF Energy-168.979988
Nuclear repulsion energy71.049328
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 3773 3585 41.22      
2 A 3631 3451 39.91      
3 A 3007 2857 109.95      
4 A 1830 1739 328.78      
5 A 1630 1549 57.76      
6 A 1444 1372 2.83      
7 A 1286 1222 101.29      
8 A 1078 1024 6.07      
9 A 1049 996 2.04      
10 A 635 603 39.27      
11 A 567 538 10.69      
12 A 345 328 253.74      

Unscaled Zero Point Vibrational Energy (zpe) 10136.9 cm-1
Scaled (by 0.9502) Zero Point Vibrational Energy (zpe) 9632.1 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
2.43184 0.37643 0.32689

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 0.163 0.388 0.002
O2 1.197 -0.246 0.008
N3 -1.091 -0.159 -0.050
H4 0.131 1.493 -0.001
H5 -1.163 -1.153 0.102
H6 -1.887 0.411 0.180

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21321.36871.10592.03562.0579
O21.21322.29042.04032.53073.1584
N31.36872.29042.05551.00841.0060
H41.10592.04032.05552.94782.2971
H52.03562.53071.00842.94781.7252
H62.05793.15841.00602.29711.7252

picture of formamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 117.011 C1 N3 H6 119.347
O2 C1 N3 124.917 O2 C1 H4 123.157
N3 C1 H4 111.888 H5 N3 H6 117.835
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability