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All results from a given calculation for CHONH2 (formamide)

using model chemistry: CCSD(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 CCSD(T)/aug-cc-pVTZ
 hartrees
Energy at 0K-169.657017
Energy at 298.15K 
HF Energy-169.004490
Nuclear repulsion energy71.112168
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 CCSD(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' 3742 3629        
2 A' 3599 3491        
3 A' 2990 2900        
4 A' 1782 1728        
5 A' 1620 1571        
6 A' 1414 1372        
7 A' 1270 1232        
8 A' 1049 1017        
9 A' 560 543        
10 A" 1043 1011        
11 A" 626 607        
12 A" 91i 88i        

Unscaled Zero Point Vibrational Energy (zpe) 9802.3 cm-1
Scaled (by 0.9699) Zero Point Vibrational Energy (zpe) 9507.2 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 CCSD(T)/aug-cc-pVTZ
ABC
2.44340 0.37765 0.32710

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.421 0.000
O2 1.201 0.229 0.000
N3 -0.942 -0.561 0.000
H4 -0.442 1.431 0.000
H5 -0.651 -1.524 0.000
H6 -1.921 -0.339 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21641.36101.10202.05152.0663
O21.21642.28402.03572.54983.1734
N31.36102.28402.05381.00631.0038
H41.10202.03572.05382.96252.3071
H52.05152.54981.00632.96251.7371
H62.06633.17341.00382.30711.7371

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 121.055
O2 C1 N3 124.686 O2 C1 H4 122.745
N3 C1 H4 112.568 H5 N3 H6 119.577
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (Non-Planar)

Jump to S1C1
Energy calculated at CCSD(T)/aug-cc-pVTZ
 hartrees
Energy at 0K-169.657020
Energy at 298.15K 
HF Energy-169.004443
Nuclear repulsion energy71.105091
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 CCSD(T)/aug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at CCSD(T)/aug-cc-pVTZ
ABC
2.43711 0.37773 0.32721

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(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 1.197 -0.247 0.003
N3 -1.086 -0.159 -0.022
H4 0.138 1.492 0.001
H5 -1.178 -1.159 0.046
H6 -1.902 0.418 0.075

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21621.36221.10212.04832.0641
O21.21622.28432.03582.54473.1699
N31.36222.28432.05531.00671.0041
H41.10212.03582.05532.96042.3066
H52.04832.54471.00672.96041.7353
H62.06413.16991.00412.30661.7353

picture of formamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 118.926 C1 N3 H6 120.693
O2 C1 N3 124.628 O2 C1 H4 122.764
N3 C1 H4 112.602 H5 N3 H6 119.302
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability