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All results from a given calculation for CHONH2 (formamide)

using model chemistry: PBEPBE/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Planar 1A'
Energy calculated at PBEPBE/6-311+G(3df,2p)
 hartrees
Energy at 0K-169.771626
Energy at 298.15K 
HF Energy-169.771626
Nuclear repulsion energy70.859933
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 PBEPBE/6-311+G(3df,2p)
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' 546 542 9.31      
2 A' 1017 1009 2.54      
3 A' 1233 1223 87.96      
4 A' 1366 1355 4.32      
5 A' 1560 1547 57.37      
6 A' 1748 1733 386.94      
7 A' 2846 2822 104.64      
8 A' 3494 3466 21.36      
9 A' 3634 3605 33.26      
10 A" 244 242 188.09      
11 A" 634 629 10.81      
12 A" 992 984 4.48      

Unscaled Zero Point Vibrational Energy (zpe) 9656.8 cm-1
Scaled (by 0.9918) Zero Point Vibrational Energy (zpe) 9577.6 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 PBEPBE/6-311+G(3df,2p)
ABC
2.42641 0.37541 0.32511

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.421 0.000
O2 1.204 0.233 0.000
N3 -0.942 -0.564 0.000
H4 -0.456 1.439 0.000
H5 -0.651 -1.536 0.000
H6 -1.931 -0.345 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.21901.36271.11562.06192.0775
O21.21902.28982.05232.56333.1884
N31.36272.28982.06051.01511.0126
H41.11562.05232.06052.98102.3147
H52.06192.56331.01512.98101.7485
H62.07753.18841.01262.31471.7485

picture of formamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.550 C1 N3 H6 121.299
O2 C1 N3 124.899 O2 C1 H4 122.998
N3 C1 H4 112.103 H5 N3 H6 119.151
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.725      
2 O -0.611      
3 N -0.533      
4 H 0.098      
5 H 0.168      
6 H 0.154      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -3.812 -0.738 0.000 3.883
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.700 0.044 0.000
y 0.044 -15.200 0.000
z 0.000 0.000 -19.204
Traceless
 xyz
x -1.497 0.044 0.000
y 0.044 3.751 0.000
z 0.000 0.000 -2.254
Polar
3z2-r2-4.508
x2-y2-3.499
xy0.044
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.460 0.363 0.000
y 0.363 4.415 0.000
z 0.000 0.000 3.000


<r2> (average value of r2) Å2
<r2> 41.506
(<r2>)1/2 6.443