return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: QCISD(TQ)/cc-pVTZ

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(TQ)/cc-pVTZ
 hartrees
Energy at 0K-100.174289
Energy at 298.15K-100.173333
HF Energy-99.807921
Nuclear repulsion energy27.486615
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)/cc-pVTZ
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 2160        
2 Σ 624 624        
3 Π 165 165        
3 Π 165 165        

Unscaled Zero Point Vibrational Energy (zpe) 1556.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1556.6 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(TQ)/cc-pVTZ
B
0.37423

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(TQ)/cc-pVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 0.000 -2.078
C2 0.000 0.000 -0.152
N3 0.000 0.000 1.021

Atom - Atom Distances (Å)
  Li1 C2 N3
Li11.92663.0994
C21.92661.1728
N33.09941.1728

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)/cc-pVTZ
 hartrees
Energy at 0K-100.178181
Energy at 298.15K-100.177430
HF Energy-99.814593
Nuclear repulsion energy29.163786
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)/cc-pVTZ
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' 2059 2059        
2 A' 648 648        
3 A' 178 178        

Unscaled Zero Point Vibrational Energy (zpe) 1442.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1442.3 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)/cc-pVTZ
ABC
2.02924 0.80641 0.57708

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(TQ)/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 1.418 -0.629 0.000
C2 -0.709 -0.366 0.000
N3 0.000 0.583 0.000

Atom - Atom Distances (Å)
  Li1 C2 N3
Li12.14331.8656
C22.14331.1847
N31.86561.1847

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 60.292 Li1 N3 C2 86.236
C2 Li1 N3 33.472
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C*V LiNC)

Jump to S1C1 S1C2
Energy calculated at QCISD(TQ)/cc-pVTZ
 hartrees
Energy at 0K-100.177733
Energy at 298.15K-100.176549
HF Energy-99.818818
Nuclear repulsion energy28.246484
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)/cc-pVTZ
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 2107 2107        
2 Σ 706 706        
3 Π 85 85        
3 Π 85 85        

Unscaled Zero Point Vibrational Energy (zpe) 1491.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1491.6 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(TQ)/cc-pVTZ
B
0.43267

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(TQ)/cc-pVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 0.000 1.891
C2 0.000 0.000 -1.073
N3 0.000 0.000 0.109

Atom - Atom Distances (Å)
  Li1 C2 N3
Li12.96411.7819
C22.96411.1822
N31.78191.1822

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