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

using model chemistry: QCISD(TQ)/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 no CS 1A'
1 3 yes C*V LiNC 1Σ

Conformer 1 (C*V LiCN)

Jump to S1C2 S1C3
Energy calculated at QCISD(TQ)/6-31+G**
 hartrees
Energy at 0K-100.088342
Energy at 298.15K-100.087429
HF Energy-99.777159
Nuclear repulsion energy27.194120
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(TQ)/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 2154 2154        
2 Σ 613 613        
3 Π 182 182        
3 Π 182 182        

Unscaled Zero Point Vibrational Energy (zpe) 1565.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1565.8 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 QCISD(TQ)/6-31+G**
B
0.36673

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 0.000 -2.099
C2 0.000 0.000 -0.154
N3 0.000 0.000 1.031

Atom - Atom Distances (Å)
  Li1 C2 N3
Li11.94583.1309
C21.94581.1850
N33.13091.1850

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 S1C3
Energy calculated at QCISD(TQ)/6-31+G**
 hartrees
Energy at 0K-100.090969
Energy at 298.15K-100.090165
HF Energy-99.782408
Nuclear repulsion energy28.808155
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(TQ)/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' 2062 2062        
2 A' 643 643        
3 A' 149 149        

Unscaled Zero Point Vibrational Energy (zpe) 1427.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1427.0 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(TQ)/6-31+G**
ABC
2.08812 0.75971 0.55705

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 1.472 -0.587 0.000
C2 -0.736 -0.372 0.000
N3 0.000 0.571 0.000

Atom - Atom Distances (Å)
  Li1 C2 N3
Li12.21831.8728
C22.21831.1960
N31.87281.1960

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 57.593 Li1 N3 C2 89.780
C2 Li1 N3 32.627
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C*V LiNC)

Jump to S1C1 S1C2
Energy calculated at QCISD(TQ)/6-31+G**
 hartrees
Energy at 0K-100.091595
Energy at 298.15K-100.090550
HF Energy-99.788681
Nuclear repulsion energy27.956455
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(TQ)/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 2112 2112        
2 Σ 691 691        
3 Π 129 129        
3 Π 129 129        

Unscaled Zero Point Vibrational Energy (zpe) 1529.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1529.8 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 QCISD(TQ)/6-31+G**
B
0.42302

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 0.000 1.914
C2 0.000 0.000 -1.084
N3 0.000 0.000 0.109

Atom - Atom Distances (Å)
  Li1 C2 N3
Li12.99781.8045
C22.99781.1933
N31.80451.1933

picture of lithium cyanide state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Li1 C2 N3 0.000 Li1 N3 C2 180.000
C2 Li1 N3 0.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability