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: PBE1PBE/3-21G

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 PBE1PBE/3-21G
 hartrees
Energy at 0K-146.500561
Energy at 298.15K-146.500393
HF Energy-146.500561
Nuclear repulsion energy46.357914
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 PBE1PBE/3-21G
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 1236 1187 0.00      
2 Σu 1470 1412 152.68      
3 Πu 494 474 12.88      
3 Πu 494 474 12.88      

Unscaled Zero Point Vibrational Energy (zpe) 1847.0 cm-1
Scaled (by 0.9604) Zero Point Vibrational Energy (zpe) 1773.8 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 PBE1PBE/3-21G
B
0.39240

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G

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 1.239
N3 0.000 0.000 -1.239

Atom - Atom Distances (Å)
  C1 N2 N3
C11.23851.2385
N21.23852.4771
N31.23852.4771

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 PBE1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.586      
2 N -0.293      
3 N -0.293      


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 -15.395 0.000 0.000
y 0.000 -15.395 0.000
z 0.000 0.000 -20.849
Traceless
 xyz
x 2.727 0.000 0.000
y 0.000 2.727 0.000
z 0.000 0.000 -5.454
Polar
3z2-r2-10.909
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 1.358 0.000 0.000
y 0.000 1.358 0.000
z 0.000 0.000 4.345


<r2> (average value of r2) Å2
<r2> 32.226
(<r2>)1/2 5.677

State 2 (1Σg)

Jump to S1C1
Energy calculated at PBE1PBE/3-21G
 hartrees
Energy at 0K-146.438912
Energy at 298.15K-146.438757
HF Energy-146.438912
Nuclear repulsion energy46.527793
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 PBE1PBE/3-21G
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 1272 1222 0.00      
2 Σu 1803 1732 71.02      
3 Πu 530 509 3.80      
3 Πu 464 445 28.72      

Unscaled Zero Point Vibrational Energy (zpe) 2034.8 cm-1
Scaled (by 0.9604) Zero Point Vibrational Energy (zpe) 1954.2 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 PBE1PBE/3-21G
B
0.39528

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G

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
C11.23401.2340
N21.23402.4680
N31.23402.4680

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 PBE1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.608      
2 N -0.304      
3 N -0.304      


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 -16.700 0.000 0.000
y 0.000 -14.161 0.000
z 0.000 0.000 -20.855
Traceless
 xyz
x 0.808 0.000 0.000
y 0.000 4.617 0.000
z 0.000 0.000 -5.425
Polar
3z2-r2-10.849
x2-y2-2.540
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.982 0.000 0.000
y 0.000 1.451 0.000
z 0.000 0.000 4.564


<r2> (average value of r2) Å2
<r2> 32.086
(<r2>)1/2 5.664