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 NCO (isocyanato radical)

using model chemistry: B3PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 2Π
Energy calculated at B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-167.944828
Energy at 298.15K-167.944777
HF Energy-167.944828
Nuclear repulsion energy52.028818
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 B3PW91/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 2033 1955 58.55      
2 Σ 1309 1258 7.59      
3 Π 610 586 16.16      
3 Π 526 506 38.14      

Unscaled Zero Point Vibrational Energy (zpe) 2238.6 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 2152.2 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 B3PW91/6-31G(2df,p)
B
0.39055

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.266
C2 0.000 0.000 -0.039
O3 0.000 0.000 1.137

Atom - Atom Distances (Å)
  N1 C2 O3
N11.22702.4037
C21.22701.1767
O32.40371.1767

picture of isocyanato radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 O3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.388      
2 C 0.592      
3 O -0.204      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.758 0.758
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.533 0.000 0.000
y 0.000 -14.297 0.000
z 0.000 0.000 -19.514
Traceless
 xyz
x 1.373 0.000 0.000
y 0.000 3.227 0.000
z 0.000 0.000 -4.600
Polar
3z2-r2-9.200
x2-y2-1.236
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.654 0.000 0.000
y 0.000 1.735 0.000
z 0.000 0.000 4.206


<r2> (average value of r2) Å2
<r2> 31.856
(<r2>)1/2 5.644