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All results from a given calculation for CHONH2 (formamide)

using model chemistry: MP2/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-169.620770
Energy at 298.15K-169.624330
HF Energy-169.004536
Nuclear repulsion energy71.160634
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/aug-cc-pVTZ
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' 3767 3589 59.41      
2 A' 3616 3445 52.93      
3 A' 3024 2882 75.64      
4 A' 1782 1699 411.65      
5 A' 1619 1543 50.29      
6 A' 1421 1354 5.13      
7 A' 1278 1218 113.95      
8 A' 1051 1002 5.22      
9 A' 563 536 10.13      
10 A" 1049 999 4.81      
11 A" 638 608 11.52      
12 A" 135 129 208.46      

Unscaled Zero Point Vibrational Energy (zpe) 9971.1 cm-1
Scaled (by 0.9529) Zero Point Vibrational Energy (zpe) 9501.5 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/aug-cc-pVTZ
ABC
2.44757 0.37824 0.32761

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.419 0.000
O2 1.199 0.234 0.000
N3 -0.940 -0.563 0.000
H4 -0.450 1.425 0.000
H5 -0.647 -1.526 0.000
H6 -1.919 -0.348 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21371.35971.10202.04982.0671
O21.21372.28312.03482.55083.1728
N31.35972.28312.04771.00591.0030
H41.10202.03482.04772.95732.3025
H52.04982.55081.00592.95731.7337
H62.06713.17281.00302.30251.7337

picture of formamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.357 C1 N3 H6 121.330
O2 C1 N3 124.950 O2 C1 H4 122.903
N3 C1 H4 112.147 H5 N3 H6 119.313
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (Non-Planar)

Jump to S1C1
Energy calculated at MP2/aug-cc-pVTZ
 hartrees
Energy at 0K-169.620770
Energy at 298.15K-169.624331
HF Energy-169.004547
Nuclear repulsion energy71.166150
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/aug-cc-pVTZ
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 3767 3589 59.43      
2 A 3615 3445 52.93      
3 A 3024 2881 75.61      
4 A 1783 1699 411.70      
5 A 1619 1543 50.30      
6 A 1421 1354 5.07      
7 A 1279 1218 113.86      
8 A 1051 1002 5.19      
9 A 1049 1000 4.82      
10 A 639 608 11.65      
11 A 563 536 10.17      
12 A 135 129 208.34      

Unscaled Zero Point Vibrational Energy (zpe) 9971.6 cm-1
Scaled (by 0.9529) Zero Point Vibrational Energy (zpe) 9501.9 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/aug-cc-pVTZ
ABC
2.44688 0.37837 0.32770

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.159 0.390 0.000
O2 1.197 -0.246 -0.000
N3 -1.083 -0.160 -0.001
H4 0.133 1.489 0.000
H5 -1.178 -1.161 0.002
H6 -1.904 0.417 0.002

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21771.35791.09992.04732.0627
O21.21772.28202.03542.54563.1711
N31.35792.28202.04911.00561.0029
H41.09992.03542.04912.95692.3023
H52.04732.54561.00562.95691.7364
H62.06273.17111.00292.30231.7364

picture of formamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.293 C1 N3 H6 121.052
O2 C1 N3 124.667 O2 C1 H4 122.789
N3 C1 H4 112.545 H5 N3 H6 119.654
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability