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All results from a given calculation for CHONH2 (formamide)

using model chemistry: MP2/TZVP

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 MP2/TZVP
 hartrees
Energy at 0K-169.512130
Energy at 298.15K 
HF Energy-168.995667
Nuclear repulsion energy71.136551
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 MP2/TZVP
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' 3786 3589 55.08      
2 A' 3636 3446 53.50      
3 A' 3033 2875 97.94      
4 A' 1802 1708 395.24      
5 A' 1634 1549 56.48      
6 A' 1453 1377 4.87      
7 A' 1281 1214 117.19      
8 A' 1058 1003 6.00      
9 A' 573 543 9.92      
10 A" 1037 983 4.30      
11 A" 622 590 11.50      
12 A" 317i 300i 256.91      

Unscaled Zero Point Vibrational Energy (zpe) 9798.5 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 9288.0 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 MP2/TZVP
ABC
2.45174 0.37763 0.32723

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.420 0.000
O2 1.201 0.229 0.000
N3 -0.942 -0.560 0.000
H4 -0.445 1.427 0.000
H5 -0.649 -1.523 0.000
H6 -1.922 -0.341 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21641.35981.10112.04872.0670
O21.21642.28412.03642.54803.1745
N31.35982.28412.04881.00631.0038
H41.10112.03642.04882.95732.3037
H52.04872.54801.00632.95731.7370
H62.06703.17451.00382.30371.7370

picture of formamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.203 C1 N3 H6 121.237
O2 C1 N3 124.811 O2 C1 H4 122.897
N3 C1 H4 112.293 H5 N3 H6 119.560
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (Non-Planar)

Jump to S1C1
Energy calculated at MP2/TZVP
 hartrees
Energy at 0K-169.512356
Energy at 298.15K-169.516256
HF Energy-168.995329
Nuclear repulsion energy71.103356
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 MP2/TZVP
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 3764 3568 45.83      
2 A 3620 3432 44.69      
3 A 3035 2877 94.88      
4 A 1802 1708 368.64      
5 A 1635 1550 53.65      
6 A 1456 1380 4.08      
7 A 1284 1218 109.89      
8 A 1077 1021 8.44      
9 A 1041 987 2.38      
10 A 623 590 42.13      
11 A 572 543 11.32      
12 A 394 373 259.31      

Unscaled Zero Point Vibrational Energy (zpe) 10151.4 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 9622.5 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 MP2/TZVP
ABC
2.43046 0.37748 0.32763

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/TZVP

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.160 0.389 0.003
O2 1.196 -0.246 0.007
N3 -1.088 -0.159 -0.050
H4 0.135 1.490 -0.001
H5 -1.163 -1.153 0.103
H6 -1.885 0.411 0.176

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21591.36461.10092.03432.0520
O21.21592.28722.03472.52963.1550
N31.36462.28722.05431.00771.0053
H41.10092.03472.05432.94622.2969
H52.03432.52961.00772.94621.7238
H62.05203.15501.00532.29691.7238

picture of formamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 117.283 C1 N3 H6 119.187
O2 C1 N3 124.740 O2 C1 H4 122.787
N3 C1 H4 112.427 H5 N3 H6 117.804
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability