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From 3D to 2D Transition Metal Nitroprussides by Selective Rupture of Axial Bonds
Author(s) -
Ávila Yosuan,
Osiry Hernández,
Plasencia Yosdel,
Torres Ana E.,
González Marlene,
LemusSantana Ana A.,
Reguera Edilso
Publication year - 2019
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201902168
Subject(s) - transition metal , molecule , exfoliation joint , molecular solid , raman spectroscopy , chemical bond , chemical physics , materials science , crystal (programming language) , crystallography , bismuth , crystal structure , chemistry , nanotechnology , organic chemistry , optics , metallurgy , catalysis , graphene , physics , programming language , computer science
1‐methyl‐2‐pyrrolidone (1m2p) is a solvent with proven abilities for 2D‐solid exfoliation due to its extremely high surface tension. In principle, such a feature could be used also to induce the selective breaking of certain bonds in solids to obtain new materials. Such a hypothesis is demonstrated in this study for transition metal nitroprussides, where 2D solids are obtained from 3D frameworks by selective rupture of axial bonds. This contribution discusses the mechanism involved in such molecular manufacture. The crystal structure for the formed 2D solids was solved and refined from XRD powder patterns recorded using synchrotron radiation. Mössbauer, IR and Raman spectra provided fine details on the electronic structure of the resulting new series of layered materials. The experimental information was complemented with calculations for the molecule configuration in its non‐activated and activated forms. In the obtained 2D solids, neighboring layers of about 1 nm of thickness remain separated by activated 1m2p molecules. The interaction between neighboring layers is of a physical nature, without the presence of a chemical bond between them, as corresponds to a 2D material.