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All results from a given calculation for LiCN (lithium cyanide)

using model chemistry: QCISD(T)=FULL/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no C*V LiCN 1Σ
1 2 yes CS 1A'

Conformer 1 (C*V LiCN)

Jump to S1C2
Energy calculated at QCISD(T)=FULL/6-31G*
 hartrees
Energy at 0K-100.087009
Energy at 298.15K-100.086078
HF Energy-99.769264
Nuclear repulsion energy27.285362
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 QCISD(T)=FULL/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 2167 2167        
2 Σ 629 629        
3 Π 175 175        
3 Π 175 175        

Unscaled Zero Point Vibrational Energy (zpe) 1573.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1573.6 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 QCISD(T)=FULL/6-31G*
B
0.37084

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/6-31G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 0.000 -2.086
C2 0.000 0.000 -0.156
N3 0.000 0.000 1.027

Atom - Atom Distances (Å)
  Li1 C2 N3
Li11.93013.1132
C21.93011.1831
N33.11321.1831

picture of lithium cyanide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Li1 C2 N3 180.000 Li1 N3 C2 0.000
C2 Li1 N3 0.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at QCISD(T)=FULL/6-31G*
 hartrees
Energy at 0K-100.092723
Energy at 298.15K-100.092005
HF Energy-99.777205
Nuclear repulsion energy28.905496
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 QCISD(T)=FULL/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 2051 2051        
2 A' 651 651        
3 A' 204 204        

Unscaled Zero Point Vibrational Energy (zpe) 1453.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1453.0 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 QCISD(T)=FULL/6-31G*
ABC
1.98484 0.79568 0.56799

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 1.427 -0.636 0.000
C2 -0.714 -0.370 0.000
N3 0.000 0.590 0.000

Atom - Atom Distances (Å)
  Li1 C2 N3
Li12.15721.8815
C22.15721.1961
N31.88151.1961

picture of lithium cyanide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Li1 C2 N3 60.464 Li1 N3 C2 85.956
C2 Li1 N3 33.580
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability