01804nas a2200205   4500008004100000022001400041245009700055210006900152260000800221300001400229490000700243520108500250100002701335700002501362700002201387700002101409700001801430700002501448856012501473       2023                        eng d  a0897-475600aMetal deficiency tailored by the 18-electron rule stabilizes metal-based inorganic compounds0 aMetal deficiency tailored by the 18electron rule stabilizes meta  cJUL  a6050-60580 v353 a<p>
	The 18-electron (18-e(-)) rule is typicallyrestrictedto predicting the stability of transition-metal-based complexes. Herein,we report the use of the 18-e(-) to predict the stabilityin a family of intermetallics MNiSn (M = V, Cr, Fe, and Co) crystallizingin the Co1.75Ge structure type. Site deficiencies at theM site obtained from single-crystal X-ray diffraction are understoodas attaining a stable noble gas electronic configuration. The densityfunctional theory -based structure calculation confirms that the deficientstructure is more stable than the ideal occupation available at thecrystal lattice. MnNiSn, which crystallizes in the half-Heusler crystalstructure, depicts the role of covalent radii of the constituent elementsin determining the crystal structure. Using X-ray absorption spectroscopyand X-ray photoelectron spectroscopy, the local structure of the above-mentionedcompounds was also elucidated, supporting the role of deficiency tunedvalence fluctuation to attain a 18-e(-) configurationthat eventually leads to the formation of stable compounds.</p>
1 aSingh, Ashutosh, Kumar1 aMumbaraddi, Dundappa1 aMishra, Vidyanshu1 aRoy, Soumyabrata1 aVinod, C., P.1 aPeter, Sebastian, C.  uhttps://library.ncl.res.in/content/metal-deficiency-tailored-18-electron-rule-stabilizes-metal-based-inorganic-compounds