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All results from a given calculation for NCN (Cyanoimidogen)

using model chemistry: MP2=FULL/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 MP2=FULL/3-21G*
 hartrees
Energy at 0K-146.109789
Energy at 298.15K-146.109601
HF Energy-145.895311
Nuclear repulsion energy46.629811
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=FULL/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Σg 1281 1215 0.00      
2 Σu 867 822 319.40      
3 Πu 529 502 15.56      
3 Πu 529 502 15.56      

Unscaled Zero Point Vibrational Energy (zpe) 1603.4 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 1520.1 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=FULL/3-21G*
B
0.39702

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/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 1.231
N3 0.000 0.000 -1.231

Atom - Atom Distances (Å)
  C1 N2 N3
C11.23131.2313
N21.23132.4626
N31.23132.4626

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=FULL/3-21G*
 hartrees
Energy at 0K-146.070320
Energy at 298.15K-146.070125
HF Energy-145.786946
Nuclear repulsion energy46.282608
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=FULL/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Σg 1254 1189 0.00      
2 Σu 1556 1475 127.32      
3 Πu 477 452 41.20      
3 Πu 476 451 2.37      

Unscaled Zero Point Vibrational Energy (zpe) 1881.7 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 1783.8 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 MP2=FULL/3-21G*
B
0.39113

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/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 1.241
N3 0.000 0.000 -1.241

Atom - Atom Distances (Å)
  C1 N2 N3
C11.24051.2405
N21.24052.4811
N31.24052.4811

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