Niobium disulfide is the
chemical compound
A chemical compound is a chemical substance composed of many identical molecules (or molecular entities) containing atoms from more than one chemical element held together by chemical bonds. A molecule consisting of atoms of only one element ...
with the
formula NbS
2. It is a black layered solid that can be exfoliated into ultrathin grayish sheets similar to other
transition metal dichalcogenides. These layers exhibit
superconductivity, where the transition temperature increases from ca. 2 to 6 K with the layer thickness increasing from 6 to 12 nm, and then saturates with thickness.
References
{{Sulfides
Niobium(IV) compounds
Sulfides
Transition metal dichalcogenides
Monolayers