Rhenium sulfide (ReS₂) is a transition metal dichalcogenide that has garnered significant attention in recent years due to its unique properties and potential applications across various fields. As a member of the layered transition metal dichalcogenides, ReS₂ exhibits distinct characteristics that make it valuable for both scientific research and technological innovation. Rhenium sulfide has a layered crystal structure which plays an important role in its properties. These layers may produce cluster ions and their detection can be used for the prediction of properties of formed surfaces. As the manuscript describes analysis of rhenium sulfide by laser desorption-ionization mass spectrometry and formation of cluster ions, I consider it worthy of publication. However, the following details need to be clarified in my opinion:
-please discus reproducibility of mass spectra
-when describing the parameter values of algorithm that was used to identify the observed rhenium sulfide clusters, authors mentioned, that ‘The search for experimental signals that matched the theoretical peak was conducted within ±0.5 m/z of the theoretical isotopologue mass”. Apparently, this refers to the allowed mass tolerance allowing to determine whether ion peak can be considered to originate from an ion with known theoretical mass. If it so such mass tolerance looks to be too big, even for low-resolution mass spectrometry. Please add additional discussion concerning this value.
-s systematic shift in experimental m/z values of the identified cluster ions relative to corresponding theoretical masses can be observed in some of the tables (e.g., 0.4 Da for table 1). Is it a calibration problem or smth else? Please discuss