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

using model chemistry: MP2=FULL/6-31G(2df,p)

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 MP2=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-100.131296
Energy at 298.15K-100.130294
HF Energy-99.778062
Nuclear repulsion energy27.418383
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 MP2=FULL/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Σ 2078 1953 28.84      
2 Σ 635 597 109.65      
3 Π 150 141 39.59      
3 Π 150 141 39.59      

Unscaled Zero Point Vibrational Energy (zpe) 1506.4 cm-1
Scaled (by 0.9399) Zero Point Vibrational Energy (zpe) 1415.9 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 MP2=FULL/6-31G(2df,p)
B
0.37744

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G(2df,p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 0.000 -2.064
C2 0.000 0.000 -0.160
N3 0.000 0.000 1.021

Atom - Atom Distances (Å)
  Li1 C2 N3
Li11.90373.0851
C21.90371.1814
N33.08511.1814

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 MP2=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-100.136981
Energy at 298.15K-100.136278
HF Energy-99.787836
Nuclear repulsion energy29.129041
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 MP2=FULL/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 1992 1872 11.80      
2 A' 655 616 138.03      
3 A' 210 197 24.76      

Unscaled Zero Point Vibrational Energy (zpe) 1428.6 cm-1
Scaled (by 0.9399) Zero Point Vibrational Energy (zpe) 1342.7 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 MP2=FULL/6-31G(2df,p)
ABC
1.93755 0.83592 0.58398

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 1.429 -0.593 0.000
C2 -0.714 -0.375 0.000
N3 0.000 0.575 0.000

Atom - Atom Distances (Å)
  Li1 C2 N3
Li12.15431.8453
C22.15431.1887
N31.84531.1887

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 58.857 Li1 N3 C2 87.684
C2 Li1 N3 33.459
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C*V LiNC)

Jump to S1C1 S1C2
Energy calculated at MP2=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-100.133085
Energy at 298.15K-100.131932
HF Energy-99.791244
Nuclear repulsion energy28.236623
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 MP2=FULL/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Σ 2073 1949 96.07      
2 Σ 723 680 142.02      
3 Π 93 87 24.31      
3 Π 93 87 24.31      

Unscaled Zero Point Vibrational Energy (zpe) 1491.1 cm-1
Scaled (by 0.9399) Zero Point Vibrational Energy (zpe) 1401.5 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 MP2=FULL/6-31G(2df,p)
B
0.43496

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G(2df,p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 0.000 1.883
C2 0.000 0.000 -1.073
N3 0.000 0.000 0.113

Atom - Atom Distances (Å)
  Li1 C2 N3
Li12.95591.7695
C22.95591.1864
N31.76951.1864

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