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All results from a given calculation for CHONH2 (formamide)

using model chemistry: B2PLYP=FULL/3-21G

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 B2PLYP=FULL/3-21G
 hartrees
Energy at 0K-168.733239
Energy at 298.15K-168.737241
HF Energy-168.620813
Nuclear repulsion energy70.284544
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 B2PLYP=FULL/3-21G
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' 3679 3502 29.20      
2 A' 3544 3374 30.20      
3 A' 2986 2842 114.93      
4 A' 1744 1660 257.77      
5 A' 1686 1605 28.01      
6 A' 1458 1388 11.58      
7 A' 1274 1213 100.59      
8 A' 1066 1014 6.66      
9 A' 569 542 9.95      
10 A" 1089 1037 0.01      
11 A" 671 639 121.38      
12 A" 481 458 260.71      

Unscaled Zero Point Vibrational Energy (zpe) 10123.0 cm-1
Scaled (by 0.952) Zero Point Vibrational Energy (zpe) 9637.0 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 B2PLYP=FULL/3-21G
ABC
2.43760 0.36636 0.31849

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.421 0.000
O2 1.224 0.226 0.000
N3 -0.959 -0.557 0.000
H4 -0.457 1.423 0.000
H5 -0.675 -1.529 0.000
H6 -1.945 -0.334 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.23961.37011.10082.06372.0868
O21.23962.31972.06342.58593.2185
N31.37012.31972.04241.01291.0106
H41.10082.06342.04242.95982.3028
H52.06372.58591.01292.95981.7438
H62.08683.21851.01062.30281.7438

picture of formamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.239 C1 N3 H6 121.730
O2 C1 N3 125.392 O2 C1 H4 123.573
N3 C1 H4 111.034 H5 N3 H6 119.031
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (Non-Planar)

Jump to S1C1
Energy calculated at B2PLYP=FULL/3-21G
 hartrees
Energy at 0K-168.733240
Energy at 298.15K-168.737241
HF Energy-168.620814
Nuclear repulsion energy70.287456
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 B2PLYP=FULL/3-21G
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 3679 3503 29.23      
2 A 3544 3374 30.19      
3 A 2985 2842 114.88      
4 A 1744 1660 258.13      
5 A 1686 1605 27.65      
6 A 1458 1388 11.64      
7 A 1275 1214 100.45      
8 A 1090 1038 0.01      
9 A 1066 1015 6.58      
10 A 671 639 121.31      
11 A 569 542 9.99      
12 A 482 459 260.74      

Unscaled Zero Point Vibrational Energy (zpe) 10123.8 cm-1
Scaled (by 0.952) Zero Point Vibrational Energy (zpe) 9637.9 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 B2PLYP=FULL/3-21G
ABC
2.43685 0.36645 0.31855

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.156 0.392 -0.000
O2 -1.221 -0.243 -0.000
N3 1.097 -0.162 0.000
H4 -0.102 1.491 0.001
H5 1.192 -1.171 0.000
H6 1.931 0.409 -0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.23971.36991.10082.06332.0868
O21.23972.31942.06342.58523.2184
N31.36992.31942.04261.01291.0105
H41.10082.06342.04262.95982.3035
H52.06332.58521.01292.95981.7436
H62.08683.21841.01052.30351.7436

picture of formamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.222 C1 N3 H6 121.755
O2 C1 N3 125.374 O2 C1 H4 123.563
N3 C1 H4 111.063 H5 N3 H6 119.023
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability