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 NCN (Cyanoimidogen)

using model chemistry: B3PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 3Σg
2 1 yes D*H 1Σg

State 1 (3Σg)

Jump to S2C1
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-147.428059
Energy at 298.15K-147.427781
HF Energy-147.428059
Nuclear repulsion energy46.544836
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**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 1284 1231 0.00      
2 Σu 1576 1511 190.45      
3 Πu 427 409 18.72      
3 Πu 427 409 18.72      

Unscaled Zero Point Vibrational Energy (zpe) 1856.7 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 1779.5 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**
B
0.39557

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
N2 0.000 0.000 1.234
N3 0.000 0.000 -1.234

Atom - Atom Distances (Å)
  C1 N2 N3
C11.23361.2336
N21.23362.4671
N31.23362.4671

picture of Cyanoimidogen state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N2 C1 N3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.619      
2 N -0.310      
3 N -0.310      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.342 0.000 0.000
y 0.000 -15.342 0.000
z 0.000 0.000 -20.205
Traceless
 xyz
x 2.432 0.000 0.000
y 0.000 2.432 0.000
z 0.000 0.000 -4.863
Polar
3z2-r2-9.726
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 1.607 0.000 0.000
y 0.000 1.607 0.000
z 0.000 0.000 5.021


<r2> (average value of r2) Å2
<r2> 31.898
(<r2>)1/2 5.648

State 2 (1Σg)

Jump to S1C1
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-147.371002
Energy at 298.15K-147.370717
HF Energy-147.371002
Nuclear repulsion energy46.670926
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**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 1313 1258 0.00      
2 Σu 1889 1810 60.82      
3 Πu 535 513 8.62      
3 Πu 328 314 34.43      

Unscaled Zero Point Vibrational Energy (zpe) 2031.8 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 1947.3 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**
B
0.39772

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
N2 0.000 0.000 1.230
N3 0.000 0.000 -1.230

Atom - Atom Distances (Å)
  C1 N2 N3
C11.23021.2302
N21.23022.4605
N31.23022.4605

picture of Cyanoimidogen state 2 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N2 C1 N3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.649      
2 N -0.324      
3 N -0.324      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.115 0.000 0.000
y 0.000 -16.689 0.000
z 0.000 0.000 -20.231
Traceless
 xyz
x 4.345 0.000 0.000
y 0.000 0.484 0.000
z 0.000 0.000 -4.829
Polar
3z2-r2-9.658
x2-y22.574
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.660 0.000 0.000
y 0.000 1.396 0.000
z 0.000 0.000 5.148


<r2> (average value of r2) Å2
<r2> 31.814
(<r2>)1/2 5.640