Comments on the paper: Optical reflectance, optical refractive index and optical conductivity measurements of nonlinear optics for L-aspartic acid nickel chloride single crystal

TL;DR

This paper critiques a previous study by identifying that the crystal characterized as L-aspartic acid nickel chloride is actually a known hydrate form, emphasizing the importance of accurate crystal identification in optical property measurements.

Contribution

It clarifies the true identity of the crystal previously reported, correcting the scientific record and highlighting potential misinterpretations in optical property studies.

Findings

The reported crystal is actually diaqua(L-aspartato)nickel(II) hydrate.

Misidentification can lead to incorrect optical property data.

Accurate crystal identification is crucial for reliable optical measurements.

Abstract

We argue that the L-aspartic acid nickel chloride crystal reported by the authors of the title paper (Optics Communications 2013) is actually the well-known diaqua(L-aspartato)nickel(II) hydrate crystal.