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All results from a given calculation for CHONH2 (formamide)

using model chemistry: CCD/6-31G*

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 CCD/6-31G*
 hartrees
Energy at 0K-169.405636
Energy at 298.15K 
HF Energy-168.928937
Nuclear repulsion energy71.073682
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 CCD/6-31G*
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' 3776 3574 48.75      
2 A' 3643 3448 53.12      
3 A' 3035 2873 91.19      
4 A' 1886 1785 384.04      
5 A' 1665 1576 81.80      
6 A' 1466 1388 4.53      
7 A' 1314 1244 118.99      
8 A' 1088 1029 4.81      
9 A' 576 545 12.96      
10 A" 1068 1011 0.15      
11 A" 641 607 21.71      
12 A" 194i 184i 309.94      

Unscaled Zero Point Vibrational Energy (zpe) 9981.7 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 9447.7 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 CCD/6-31G*
ABC
2.44210 0.37748 0.32694

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.420 0.000
O2 1.201 0.239 0.000
N3 -0.941 -0.567 0.000
H4 -0.452 1.432 0.000
H5 -0.642 -1.533 0.000
H6 -1.929 -0.361 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21471.36331.10832.05532.0807
O21.21472.28842.03882.55643.1866
N31.36332.28842.05721.01111.0088
H41.10832.03882.05722.97042.3224
H52.05532.55641.01112.97041.7400
H62.08073.18661.00882.32241.7400

picture of formamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.164 C1 N3 H6 121.889
O2 C1 N3 125.074 O2 C1 H4 122.658
N3 C1 H4 112.268 H5 N3 H6 118.947
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (Non-Planar)

Jump to S1C1
Energy calculated at CCD/6-31G*
 hartrees
Energy at 0K-169.405704
Energy at 298.15K-169.409460
HF Energy-168.928800
Nuclear repulsion energy71.036123
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 CCD/6-31G*
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 3757 3556 42.18      
2 A 3628 3434 45.10      
3 A 3036 2874 89.57      
4 A 1888 1787 363.00      
5 A 1670 1581 75.56      
6 A 1467 1389 4.06      
7 A 1313 1243 113.95      
8 A 1101 1042 5.56      
9 A 1063 1007 0.64      
10 A 633 599 40.99      
11 A 575 544 13.18      
12 A 267 253 317.48      

Unscaled Zero Point Vibrational Energy (zpe) 10198.8 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 9653.2 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 CCD/6-31G*
ABC
2.42485 0.37723 0.32711

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.161 0.390 0.001
O2 1.196 -0.248 0.007
N3 -1.088 -0.158 -0.043
H4 0.143 1.496 -0.000
H5 -1.167 -1.158 0.086
H6 -1.900 0.408 0.154

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21531.36471.10602.04152.0674
O21.21532.28632.03682.53393.1685
N31.36472.28632.06161.01151.0093
H41.10602.03682.06162.96052.3197
H52.04152.53391.01152.96051.7302
H62.06743.16851.00932.31971.7302

picture of formamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 117.669 C1 N3 H6 120.376
O2 C1 N3 124.689 O2 C1 H4 122.598
N3 C1 H4 112.686 H5 N3 H6 117.772
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability