Does a "glycine magnesium chloride" crystal exist?

被引：1

作者：

Srinivasan, Bikshandarkoil R. ^{[1
]}

Petrosyan, Aram M. ^{[2
]}

机构：

[1] Goa Univ, Sch Chem Sci, Taleigao Plateau 403206, Goa, India

[2] NAS Armenia, Inst Appl Problems Phys, 25 Nersessyan Str, Yerevan 0014, Armenia

来源：

JOURNAL OF MOLECULAR STRUCTURE | 2024年 / 1310卷

关键词：

Glycine magnesium chloride; Unit cell; Infrared spectrum; gamma-glycine; Erroneous paper; GROWTH;

D O I：

10.1016/j.molstruc.2024.138237

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The authors of a recently published paper (J Mol Struct 1277 (2023) 134,839) report to have newly grown seeds of "glycine magnesium chloride" (GMC) crystal by slow evaporation of an aqueous solution containing equimolar ratios of glycine and magnesium chloride. A critical analysis of the unit cell data and infrared spectrum of the socalled GMC crystal reveals the total absence of magnesium chloride, as these correspond to the gamma-modification of glycine. In this letter to the Editor, we prove that all papers reporting on so-called GMC, "coumarin doped GMC" CDGMC, and "methylene blue dye doped GMC" MDGMC crystals, are erroneous as the material studied in all cases is gamma-glycine. Hence, the quantum mechanical studies on the non-existent GMC, CDGMC and MDCMG crystals have no scientific value.

引用

页数：5

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