return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CHONH2 (formamide)

using model chemistry: B2PLYP=FULL/6-31G**

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/6-31G**
 hartrees
Energy at 0K-169.737558
Energy at 298.15K-169.741087
HF Energy-169.573889
Nuclear repulsion energy71.044899
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/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3791 3791 43.22      
2 A' 3643 3643 39.69      
3 A' 3008 3008 106.59      
4 A' 1832 1832 340.86      
5 A' 1641 1641 62.29      
6 A' 1445 1445 5.34      
7 A' 1289 1289 96.46      
8 A' 1063 1063 2.95      
9 A' 564 564 11.61      
10 A" 1056 1056 0.19      
11 A" 653 653 20.53      
12 A" 115 115 260.37      

Unscaled Zero Point Vibrational Energy (zpe) 10049.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10049.1 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/6-31G**
ABC
2.44798 0.37658 0.32637

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.421 0.000
O2 1.204 0.229 0.000
N3 -0.944 -0.559 0.000
H4 -0.450 1.429 0.000
H5 -0.647 -1.521 0.000
H6 -1.925 -0.346 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21881.36061.10402.04682.0722
O21.21882.28732.04342.54673.1811
N31.36062.28732.04841.00661.0044
H41.10402.04342.04842.95642.3074
H52.04682.54671.00662.95641.7367
H62.07223.18111.00442.30741.7367

picture of formamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 118.923 C1 N3 H6 121.640
O2 C1 N3 124.849 O2 C1 H4 123.140
N3 C1 H4 112.011 H5 N3 H6 119.437
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (Non-Planar)

Jump to S1C1
Energy calculated at B2PLYP=FULL/6-31G**
 hartrees
Energy at 0K-169.737559
Energy at 298.15K-169.741077
HF Energy-169.573885
Nuclear repulsion energy71.046299
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/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3791 3791 43.33      
2 A 3642 3642 39.70      
3 A 3009 3009 106.37      
4 A 1831 1831 340.88      
5 A 1641 1641 62.11      
6 A 1444 1444 5.35      
7 A 1290 1290 96.24      
8 A 1063 1063 2.90      
9 A 1056 1056 0.20      
10 A 653 653 20.89      
11 A 564 564 11.66      
12 A 108 108 259.99      

Unscaled Zero Point Vibrational Energy (zpe) 10046.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10046.4 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/6-31G**
ABC
2.44705 0.37667 0.32642

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.159 0.389 0.000
O2 1.200 -0.245 0.000
N3 -1.085 -0.160 -0.000
H4 0.126 1.493 -0.000
H5 -1.174 -1.162 0.000
H6 -1.913 0.410 0.001

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21911.36041.10392.04592.0722
O21.21912.28712.04312.54523.1811
N31.36042.28712.04881.00671.0044
H41.10392.04312.04882.95632.3085
H52.04592.54521.00672.95631.7370
H62.07223.18111.00442.30851.7370

picture of formamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 118.858 C1 N3 H6 121.665
O2 C1 N3 124.828 O2 C1 H4 123.102
N3 C1 H4 112.070 H5 N3 H6 119.477
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability