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

using model chemistry: QCISD(T)=FULL/cc-pVQZ

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'

Conformer 1 (C*V LiCN)

Jump to S1C2
Energy calculated at QCISD(T)=FULL/cc-pVQZ
 hartrees
Energy at 0K-100.280690
Energy at 298.15K-100.279771
HF Energy-99.815547
Nuclear repulsion energy27.658629
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)=FULL/cc-pVQZ
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 2167 2167        
2 Σ 628 628        
3 Π 176 176        
3 Π 176 176        

Unscaled Zero Point Vibrational Energy (zpe) 1573.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1573.6 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(T)=FULL/cc-pVQZ
B
0.38080

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/cc-pVQZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 0.000 -2.058
C2 0.000 0.000 -0.154
N3 0.000 0.000 1.014

Atom - Atom Distances (Å)
  Li1 C2 N3
Li11.90453.0721
C21.90451.1677
N33.07211.1677

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
Energy calculated at QCISD(T)=FULL/cc-pVQZ
 hartrees
Energy at 0K-100.284280
Energy at 298.15K-100.283549
HF Energy-99.821556
Nuclear repulsion energy29.373946
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)=FULL/cc-pVQZ
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' 659 659        
3 A' 188 188        

Unscaled Zero Point Vibrational Energy (zpe) 1454.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1454.0 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(T)=FULL/cc-pVQZ
ABC
2.03687 0.82924 0.58932

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 1.399 -0.623 0.000
C2 -0.699 -0.368 0.000
N3 0.000 0.582 0.000

Atom - Atom Distances (Å)
  Li1 C2 N3
Li12.11331.8459
C22.11331.1794
N31.84591.1794

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 60.563 Li1 N3 C2 85.626
C2 Li1 N3 33.812
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability