Vibrational levels (cm-1)  
| Mode Number | Symmetry | Frequency | Intensity | Comment | Description | 
| Fundamental(cm-1) | Harmonic(cm-1) | Reference | (km mol-1) | unc. | Reference | 
| 1 | Σ |  | 580 | 2001Bre/Ziu:249 |  |  |  | estimate |  | 
Detailed diatomic data
| ωe | ωexe | ωeye | Be | αe | ZPE | reference | 
| 580 |  |  | 0.6340409 | 6.790568E-03 |  | 2001Bre/Ziu:249 | 
  
  
vibrational zero-point energy:   cm
-1 (from fundamental vibrations)
Calculated vibrational frequencies for 
LiS (Lithium monosulfide).
 
  Geometric Data
 
Point Group C∞v
Internal coordinates
distances (r) in Å, angles (a) in degrees, dihedrals (d) in degrees
| Description | Value | unc. | Connectivity | Reference | Comment | 
| Atom 1 | Atom 2 | Atom 3 | Atom 4 | 
| rLiS | 2.150 |  | 1 | 2 |  |  | 2001Bre/Ziu:249 |  | 
Cartesians
| Atom | x (Å) | y (Å) | z (Å) | 
  | Li1 | 0.0000 | 0.0000 | 0.0000 | 
  | S2 | 0.0000 | 0.0000 | 2.1497 | 
Atom - Atom Distances  
Distances in Å
|  | Li1 | S2 | 
| Li1 |  | 2.1497 | 
| S2 | 2.1497 |  | 
Calculated geometries
for LiS (Lithium monosulfide).
Bond descriptions
Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Connectivity
 
Dipole, Quadrupole and Polarizability
Electric dipole moment  
| State | Config | State description | Conf description | Exp. min. | Dipole (Debye) | Reference | comment | Point Group | Components | 
| x | y | z | total | dipole | quadrupole | 
| 1 | 1 | 2Π | C∞v | True |  |  |  |  |  |  | C∞v | 1 | 1 | 
Experimental dipole measurement abbreviations: MW microwave; DT Dielectric with Temperature variation; DR Indirect (usually an upper limit); MB Molecular beam
Calculated electric dipole moments for 
LiS (Lithium monosulfide).
Electric quadrupole moment  
| State | Config | State description | Conf description | Exp. min. | Quadrupole (D Å) | Reference | comment | Point Group | Components | 
| xx | yy | zz | dipole | quadrupole | 
| 1 | 1 | 2Π | C∞v | True |  |  |  |  |  | C∞v | 1 | 1 | 
Calculated electric quadrupole moments for 
LiS (Lithium monosulfide).