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 NCl (nitrogen monochloride)

using model chemistry: mPW1PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 3Σ
2 1 yes C*V 1Σ

State 1 (3Σ)

Jump to S2C1
Energy calculated at mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-514.824145
Energy at 298.15K-514.824155
HF Energy-514.824145
Nuclear repulsion energy38.887520
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 mPW1PW91/6-31G(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 856 818 58.66      

Unscaled Zero Point Vibrational Energy (zpe) 428.2 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 408.8 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 mPW1PW91/6-31G(2df,p)
B
0.64293

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.147
Cl2 0.000 0.000 0.472

Atom - Atom Distances (Å)
  N1 Cl2
N11.6193
Cl21.6193

picture of nitrogen monochloride state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.133      
2 Cl 0.133      


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 1.020 1.020
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.531 0.000 0.000
y 0.000 -17.531 0.000
z 0.000 0.000 -17.897
Traceless
 xyz
x 0.183 0.000 0.000
y 0.000 0.183 0.000
z 0.000 0.000 -0.365
Polar
3z2-r2-0.731
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.895 0.000 0.000
y 0.000 1.895 0.000
z 0.000 0.000 3.862


<r2> (average value of r2) Å2
<r2> 24.028
(<r2>)1/2 4.902

State 2 (1Σ)

Jump to S1C1
Energy calculated at mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-514.756085
Energy at 298.15K-514.756116
Nuclear repulsion energy39.848542
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 mPW1PW91/6-31G(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 945 902 33.95      

Unscaled Zero Point Vibrational Energy (zpe) 472.4 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 451.0 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 mPW1PW91/6-31G(2df,p)
B
0.67510

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -1.119
Cl2 0.000 0.000 0.461

Atom - Atom Distances (Å)
  N1 Cl2
N11.5803
Cl21.5803

picture of nitrogen monochloride state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.215      
2 Cl 0.215      


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 1.576 1.576
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.092 0.000 0.000
y 0.000 -18.836 0.000
z 0.000 0.000 -18.275
Traceless
 xyz
x 2.463 0.000 0.000
y 0.000 -1.653 0.000
z 0.000 0.000 -0.811
Polar
3z2-r2-1.622
x2-y22.744
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.857 0.000 0.000
y 0.000 1.808 0.000
z 0.000 0.000 3.820


<r2> (average value of r2) Å2
<r2> 23.459
(<r2>)1/2 4.843