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All results from a given calculation for NCN (Cyanoimidogen)

using model chemistry: MP2/STO-3G

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/STO-3G
 hartrees
Energy at 0K-144.951326
Energy at 298.15K 
HF Energy-144.855132
Nuclear repulsion energy44.887424
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/STO-3G
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 1212 1057 0.00      
2 Σu 382i 333i 336.12      
3 Πu 432 377 10.49      
3 Πu 432 377 10.49      

Unscaled Zero Point Vibrational Energy (zpe) 847.6 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 739.0 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 MP2/STO-3G
B
0.36790

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/STO-3G

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 1.279
N3 0.000 0.000 -1.279

Atom - Atom Distances (Å)
  C1 N2 N3
C11.27911.2791
N21.27912.5582
N31.27912.5582

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/STO-3G
 hartrees
Energy at 0K-144.893709
Energy at 298.15K 
HF Energy-144.714061
Nuclear repulsion energy44.980779
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/STO-3G
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 1145 0.00      
2 Σu 742i 647i 463.32      
3 Πu 464 405 4.80      
3 Πu 368 321 21.35      

Unscaled Zero Point Vibrational Energy (zpe) 701.4 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 611.6 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/STO-3G
B
0.36943

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/STO-3G

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 1.276
N3 0.000 0.000 -1.276

Atom - Atom Distances (Å)
  C1 N2 N3
C11.27651.2765
N21.27652.5529
N31.27652.5529

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