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

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

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-pVDZ
 hartrees
Energy at 0K-100.084973
Energy at 298.15K-100.083902
HF Energy-99.778198
Nuclear repulsion energy27.111253
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-pVDZ
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 2145 2145        
2 Σ 602 602        
3 Π 134 134        
3 Π 134 134        

Unscaled Zero Point Vibrational Energy (zpe) 1507.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1507.0 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)/cc-pVDZ
B
0.36287

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 0.000 -2.112
C2 0.000 0.000 -0.152
N3 0.000 0.000 1.036

Atom - Atom Distances (Å)
  Li1 C2 N3
Li11.96033.1478
C21.96031.1875
N33.14781.1875

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-pVDZ
 hartrees
Energy at 0K-100.091264
Energy at 298.15K-100.090468
HF Energy-99.787764
Nuclear repulsion energy28.671061
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-pVDZ
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' 2041 2041        
2 A' 646 646        
3 A' 151 151        

Unscaled Zero Point Vibrational Energy (zpe) 1418.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1418.9 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-pVDZ
ABC
2.06223 0.75136 0.55071

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 1.478 -0.600 0.000
C2 -0.739 -0.371 0.000
N3 0.000 0.575 0.000

Atom - Atom Distances (Å)
  Li1 C2 N3
Li12.22921.8881
C22.22921.2004
N31.88811.2004

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 57.882 Li1 N3 C2 89.536
C2 Li1 N3 32.581
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C*V LiNC)

Jump to S1C1 S1C2
Energy calculated at QCISD(TQ)/cc-pVDZ
 hartrees
Energy at 0K-100.089214
Energy at 298.15K 
HF Energy-99.790648
Nuclear repulsion energy27.836520
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-pVDZ
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 2094        
2 Σ 699 699        
3 Π 35i 35i        
3 Π 35i 35i        

Unscaled Zero Point Vibrational Energy (zpe) 1361.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1361.1 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(TQ)/cc-pVDZ
B
0.41886

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 0.000 1.924
C2 0.000 0.000 -1.089
N3 0.000 0.000 0.109

Atom - Atom Distances (Å)
  Li1 C2 N3
Li13.01281.8151
C23.01281.1977
N31.81511.1977

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