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All results from a given calculation for CHONH2 (formamide)

using model chemistry: QCISD(T)/aug-cc-pVTZ

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 QCISD(T)/aug-cc-pVTZ
 hartrees
Energy at 0K-169.657976
Energy at 298.15K 
HF Energy-169.004388
Nuclear repulsion energy71.084083
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 QCISD(T)/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' 3740 3616        
2 A' 3597 3477        
3 A' 2988 2888        
4 A' 1776 1718        
5 A' 1619 1565        
6 A' 1412 1365        
7 A' 1268 1226        
8 A' 1047 1012        
9 A' 559 540        
10 A" 1041 1006        
11 A" 626 605        
12 A" 90i 87i        

Unscaled Zero Point Vibrational Energy (zpe) 9790.5 cm-1
Scaled (by 0.9668) Zero Point Vibrational Energy (zpe) 9465.5 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 QCISD(T)/aug-cc-pVTZ
ABC
2.44164 0.37735 0.32683

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.422 0.000
O2 1.202 0.228 0.000
N3 -0.943 -0.561 0.000
H4 -0.442 1.431 0.000
H5 -0.652 -1.524 0.000
H6 -1.922 -0.339 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21721.36141.10212.05192.0667
O21.21722.28492.03672.55073.1746
N31.36142.28492.05411.00651.0040
H41.10212.03672.05412.96302.3074
H52.05192.55071.00652.96301.7374
H62.06673.17461.00402.30741.7374

picture of formamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.369 C1 N3 H6 121.050
O2 C1 N3 124.683 O2 C1 H4 122.759
N3 C1 H4 112.558 H5 N3 H6 119.581
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (Non-Planar)

Jump to S1C1
Energy calculated at QCISD(T)/aug-cc-pVTZ
 hartrees
Energy at 0K-169.657979
Energy at 298.15K-169.661522
HF Energy-169.004344
Nuclear repulsion energy71.078457
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 QCISD(T)/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 3735 3611        
2 A 3593 3474        
3 A 2987 2888        
4 A 1777 1718        
5 A 1620 1566        
6 A 1412 1365        
7 A 1268 1226        
8 A 1052 1017        
9 A 1039 1004        
10 A 624 604        
11 A 559 540        
12 A 132 127        

Unscaled Zero Point Vibrational Energy (zpe) 9898.6 cm-1
Scaled (by 0.9668) Zero Point Vibrational Energy (zpe) 9570.0 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 QCISD(T)/aug-cc-pVTZ
ABC
2.43558 0.37745 0.32695

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.161 0.390 0.001
O2 1.198 -0.247 0.003
N3 -1.086 -0.159 -0.021
H4 0.138 1.492 0.001
H5 -1.178 -1.160 0.044
H6 -1.903 0.417 0.070

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21701.36251.10222.04892.0648
O21.21702.28512.03682.54563.1714
N31.36252.28512.05561.00681.0043
H41.10222.03682.05562.96102.3071
H52.04892.54561.00682.96101.7360
H62.06483.17141.00432.30711.7360

picture of formamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 118.950 C1 N3 H6 120.728
O2 C1 N3 124.621 O2 C1 H4 122.776
N3 C1 H4 112.596 H5 N3 H6 119.359
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability