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All results from a given calculation for CHONH2 (formamide)

using model chemistry: B3PW91/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Planar 1A'
Energy calculated at B3PW91/aug-cc-pVTZ
 hartrees
Energy at 0K-169.900806
Energy at 298.15K-169.904547
HF Energy-169.900806
Nuclear repulsion energy71.406266
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 B3PW91/aug-cc-pVTZ
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' 3736 3606 44.20      
2 A' 3596 3471 34.99      
3 A' 2946 2843 92.95      
4 A' 1805 1742 430.73      
5 A' 1614 1558 62.25      
6 A' 1414 1365 5.03      
7 A' 1274 1229 105.93      
8 A' 1054 1018 3.55      
9 A' 565 546 10.91      
10 A" 1042 1005 2.75      
11 A" 644 621 13.99      
12 A" 253 244 201.36      

Unscaled Zero Point Vibrational Energy (zpe) 9971.4 cm-1
Scaled (by 0.9651) Zero Point Vibrational Energy (zpe) 9623.4 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 B3PW91/aug-cc-pVTZ
ABC
2.46629 0.38092 0.32996

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.417 0.000
O2 1.194 0.238 0.000
N3 -0.934 -0.565 0.000
H4 -0.453 1.427 0.000
H5 -0.640 -1.527 0.000
H6 -1.915 -0.354 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 H4 H5 H6
C11.20701.35561.10622.04732.0650
O21.20702.27432.03092.54533.1649
N31.35562.27432.04871.00631.0034
H41.10622.03092.04872.95972.3042
H52.04732.54531.00632.95971.7326
H62.06503.16491.00342.30421.7326

picture of formamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.443 C1 N3 H6 121.453
O2 C1 N3 125.013 O2 C1 H4 122.735
N3 C1 H4 112.252 H5 N3 H6 119.104
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.077      
2 O -0.542      
3 N -0.122      
4 H 0.413      
5 H 0.100      
6 H 0.073      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -3.889 -0.689 0.000 3.949
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.545 -0.043 0.000
y -0.043 -14.870 0.000
z 0.000 0.000 -18.899
Traceless
 xyz
x -1.660 -0.043 0.000
y -0.043 3.851 0.000
z 0.000 0.000 -2.191
Polar
3z2-r2-4.383
x2-y2-3.674
xy-0.043
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.196 0.320 0.000
y 0.320 4.222 0.000
z 0.000 0.000 2.952


<r2> (average value of r2) Å2
<r2> 40.888
(<r2>)1/2 6.394