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: ROHF/cc-pVTZ

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 ROHF/cc-pVTZ
 hartrees
Energy at 0K-167.182901
Energy at 298.15K-167.182972
HF Energy-167.182901
Nuclear repulsion energy53.115388
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 ROHF/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 Σ 2370 2135 623.26      
2 Σ 1387 1250 0.02      
3 Π 694 625 36.59      
3 Π 636 573 70.56      

Unscaled Zero Point Vibrational Energy (zpe) 2543.6 cm-1
Scaled (by 0.901) Zero Point Vibrational Energy (zpe) 2291.8 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 ROHF/cc-pVTZ
B
0.40580

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.248
C2 0.000 0.000 -0.024
O3 0.000 0.000 1.110

Atom - Atom Distances (Å)
  N1 C2 O3
N11.22472.3585
C21.22471.1338
O32.35851.1338

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 ROHF/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.203      
2 C 0.396      
3 O -0.193      


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 0.594 0.594
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.450 0.000 0.000
y 0.000 -15.864 0.000
z 0.000 0.000 -20.859
Traceless
 xyz
x 3.912 0.000 0.000
y 0.000 1.790 0.000
z 0.000 0.000 -5.702
Polar
3z2-r2-11.404
x2-y21.415
xy0.000
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 31.427
(<r2>)1/2 5.606