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All results from a given calculation for NCN (Cyanoimidogen)

using model chemistry: MP2/CEP-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 MP2/CEP-31G*
 hartrees
Energy at 0K-25.111947
Energy at 298.15K-25.111751
HF Energy-24.794386
Nuclear repulsion energy22.408336
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 MP2/CEP-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 1334 1266 0.00      
2 Σu 1007 956 653.88      
3 Πu 504 478 19.26      
3 Πu 504 478 19.26      

Unscaled Zero Point Vibrational Energy (zpe) 1674.1 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 1589.4 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 MP2/CEP-31G*
B
0.39160

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-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 1.240
N3 0.000 0.000 -1.240

Atom - Atom Distances (Å)
  C1 N2 N3
C11.23981.2398
N21.23982.4796
N31.23982.4796

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

State 2 (1Σg)

Jump to S1C1
Energy calculated at MP2/CEP-31G*
 hartrees
Energy at 0K-25.078779
Energy at 298.15K-25.078551
HF Energy-24.689246
Nuclear repulsion energy22.226669
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 MP2/CEP-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 1298 1232 0.00      
2 Σu 1871 1776 44.55      
3 Πu 535 508 3.28      
3 Πu 386 367 44.62      

Unscaled Zero Point Vibrational Energy (zpe) 2044.5 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 1941.1 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 MP2/CEP-31G*
B
0.38528

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-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 1.250
N3 0.000 0.000 -1.250

Atom - Atom Distances (Å)
  C1 N2 N3
C11.24991.2499
N21.24992.4999
N31.24992.4999

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