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

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

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/6-31+G**
 hartrees
Energy at 0K-100.099647
Energy at 298.15K-100.098887
HF Energy-99.777085
Nuclear repulsion energy27.308358
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/6-31+G**
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 2153 2153        
2 Σ 629 629        
3 Π 232 232        
3 Π 232 232        

Unscaled Zero Point Vibrational Energy (zpe) 1622.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1622.6 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/6-31+G**
B
0.37347

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 0.000 -2.076
C2 0.000 0.000 -0.159
N3 0.000 0.000 1.026

Atom - Atom Distances (Å)
  Li1 C2 N3
Li11.91723.1017
C21.91721.1845
N33.10171.1845

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/6-31+G**
 hartrees
Energy at 0K-100.101423
Energy at 298.15K-100.100577
HF Energy-99.782916
Nuclear repulsion energy28.834213
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/6-31+G**
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' 2046 2046        
2 A' 652 652        
3 A' 121 121        

Unscaled Zero Point Vibrational Energy (zpe) 1409.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1409.1 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 QCISD(T)=FULL/6-31+G**
ABC
2.27336 0.73274 0.55413

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 1.512 -0.494 0.000
C2 -0.756 -0.386 0.000
N3 0.000 0.542 0.000

Atom - Atom Distances (Å)
  Li1 C2 N3
Li12.27001.8328
C22.27001.1967
N31.83281.1967

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 53.578 Li1 N3 C2 94.727
C2 Li1 N3 31.695
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability