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: CCD/6-311G*

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/6-311G*
 hartrees
Energy at 0K-169.477643
Energy at 298.15K 
HF Energy-168.972744
Nuclear repulsion energy71.333338
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/6-311G*
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' 3801 3631 36.45      
2 A' 3665 3501 40.94      
3 A' 2998 2863 100.29      
4 A' 1883 1799 418.87      
5 A' 1694 1618 71.99      
6 A' 1453 1388 4.59      
7 A' 1302 1244 126.77      
8 A' 1089 1040 7.89      
9 A' 580 554 12.66      
10 A" 1065 1017 1.01      
11 A" 641 612 17.82      
12 A" 271i 259i 297.69      

Unscaled Zero Point Vibrational Energy (zpe) 9950.2 cm-1
Scaled (by 0.9551) Zero Point Vibrational Energy (zpe) 9503.5 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 CCD/6-311G*
ABC
2.46840 0.37929 0.32877

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.419 0.000
O2 1.193 0.244 0.000
N3 -0.934 -0.571 0.000
H4 -0.455 1.429 0.000
H5 -0.632 -1.530 0.000
H6 -1.916 -0.370 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.20561.36121.10742.04852.0723
O21.20562.27802.02932.54493.1693
N31.36122.27802.05621.00511.0026
H41.10742.02932.05622.96342.3171
H52.04852.54491.00512.96341.7307
H62.07233.16931.00262.31711.7307

picture of formamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.154 C1 N3 H6 121.754
O2 C1 N3 125.008 O2 C1 H4 122.596
N3 C1 H4 112.396 H5 N3 H6 119.092
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (Non-Planar)

Jump to S1C1
Energy calculated at CCD/6-311G*
 hartrees
Energy at 0K-169.477839
Energy at 298.15K-169.481718
HF Energy-168.972527
Nuclear repulsion energy71.280138
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/6-311G*
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 3774 3605 28.54      
2 A 3646 3482 31.35      
3 A 3002 2867 97.52      
4 A 1886 1801 386.31      
5 A 1699 1623 66.30      
6 A 1456 1391 4.41      
7 A 1306 1248 114.15      
8 A 1106 1056 11.00      
9 A 1060 1012 1.39      
10 A 632 604 53.45      
11 A 580 554 14.88      
12 A 360 344 299.99      

Unscaled Zero Point Vibrational Energy (zpe) 10253.3 cm-1
Scaled (by 0.9551) Zero Point Vibrational Energy (zpe) 9792.9 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 CCD/6-311G*
ABC
2.44409 0.37884 0.32901

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-311G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.166 0.386 0.001
O2 1.191 -0.247 0.008
N3 -1.089 -0.156 -0.052
H4 0.150 1.492 -0.001
H5 -1.165 -1.147 0.105
H6 -1.882 0.412 0.190

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.20491.36761.10702.03272.0564
O21.20492.28262.02732.52413.1479
N31.36762.28262.06281.00671.0045
H41.10702.02732.06282.95122.3096
H52.03272.52411.00672.95121.7175
H62.05643.14791.00452.30961.7175

picture of formamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 116.954 C1 N3 H6 119.420
O2 C1 N3 124.955 O2 C1 H4 122.488
N3 C1 H4 112.518 H5 N3 H6 117.295
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability