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

using model chemistry: QCISD(T)/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'
1 3 no C*V LiNC 1Σ

Conformer 1 (C*V LiCN)

Jump to S1C2 S1C3
Energy calculated at QCISD(T)/6-31G*
 hartrees
Energy at 0K-100.077687
Energy at 298.15K-100.076709
HF Energy-99.769096
Nuclear repulsion energy27.217371
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)/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 2160 2072        
2 Σ 622 597        
3 Π 162 155        
3 Π 162 155        

Unscaled Zero Point Vibrational Energy (zpe) 1552.4 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 1489.2 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)/6-31G*
B
0.36762

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 0.000 -2.097
C2 0.000 0.000 -0.154
N3 0.000 0.000 1.030

Atom - Atom Distances (Å)
  Li1 C2 N3
Li11.94273.1270
C21.94271.1843
N33.12701.1843

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(T)/6-31G*
 hartrees
Energy at 0K-100.084064
Energy at 298.15K-100.083349
HF Energy-99.777037
Nuclear repulsion energy28.855907
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)/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' 2046 1963        
2 A' 652 625        
3 A' 206 198        

Unscaled Zero Point Vibrational Energy (zpe) 1451.8 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 1392.7 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)/6-31G*
ABC
1.97616 0.79167 0.56523

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 1.429 -0.643 0.000
C2 -0.715 -0.369 0.000
N3 0.000 0.592 0.000

Atom - Atom Distances (Å)
  Li1 C2 N3
Li12.16151.8890
C22.16151.1972
N31.88901.1972

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 60.644 Li1 N3 C2 85.823
C2 Li1 N3 33.533
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C*V LiNC)

Jump to S1C1 S1C2
Energy calculated at QCISD(T)/6-31G*
 hartrees
Energy at 0K-100.078883
Energy at 298.15K 
HF Energy-99.777964
Nuclear repulsion energy27.927415
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)/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 2094 2009        
2 Σ 709 680        
3 Π 26i 25i        
3 Π 26i 25i        

Unscaled Zero Point Vibrational Energy (zpe) 1375.4 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 1319.4 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)/6-31G*
B
0.42248

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

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 -1.085
N3 0.000 0.000 0.110

Atom - Atom Distances (Å)
  Li1 C2 N3
Li12.99971.8047
C22.99971.1950
N31.80471.1950

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