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: mPW1PW91/TZVP

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 mPW1PW91/TZVP
 hartrees
Energy at 0K-147.495935
Energy at 298.15K-147.495695
HF Energy-147.495935
Nuclear repulsion energy46.944366
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/TZVP
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 1289 1230 0.00      
2 Σu 1542 1471 225.85      
3 Πu 444 424 18.95      
3 Πu 444 424 18.95      

Unscaled Zero Point Vibrational Energy (zpe) 1859.7 cm-1
Scaled (by 0.954) Zero Point Vibrational Energy (zpe) 1774.2 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 mPW1PW91/TZVP
B
0.40239

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/TZVP

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 1.223
N3 0.000 0.000 -1.223

Atom - Atom Distances (Å)
  C1 N2 N3
C11.22311.2231
N21.22312.4461
N31.22312.4461

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 mPW1PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.069      
2 N -0.035      
3 N -0.035      


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 -15.549 0.000 0.000
y 0.000 -15.549 0.000
z 0.000 0.000 -20.722
Traceless
 xyz
x 2.586 0.000 0.000
y 0.000 2.586 0.000
z 0.000 0.000 -5.173
Polar
3z2-r2-10.345
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 5.448


<r2> (average value of r2) Å2
<r2> 31.731
(<r2>)1/2 5.633

State 2 (1Σg)

Jump to S1C1
Energy calculated at mPW1PW91/TZVP
 hartrees
Energy at 0K-147.436948
Energy at 298.15K-147.436707
HF Energy-147.436948
Nuclear repulsion energy47.096721
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/TZVP
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 1322 1261 0.00      
2 Σu 1867 1781 65.58      
3 Πu 563 537 8.80      
3 Πu 345 329 34.79      

Unscaled Zero Point Vibrational Energy (zpe) 2048.5 cm-1
Scaled (by 0.954) 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 mPW1PW91/TZVP
B
0.40501

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/TZVP

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 1.219
N3 0.000 0.000 -1.219

Atom - Atom Distances (Å)
  C1 N2 N3
C11.21911.2191
N21.21912.4382
N31.21912.4382

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 mPW1PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.103      
2 N -0.051      
3 N -0.051      


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 -14.315 0.000 0.000
y 0.000 -17.003 0.000
z 0.000 0.000 -20.787
Traceless
 xyz
x 4.580 0.000 0.000
y 0.000 0.548 0.000
z 0.000 0.000 -5.128
Polar
3z2-r2-10.256
x2-y22.688
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.891 0.000 0.000
y 0.000 1.724 0.000
z 0.000 0.000 5.624


<r2> (average value of r2) Å2
<r2> 31.655
(<r2>)1/2 5.626