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Recent Advances in Molecular and Hybrid Structures: Synthesis, Diagnostics, and Applications

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Physical Chemistry and Chemical Physics".

Deadline for manuscript submissions: closed (31 July 2023) | Viewed by 2216

Special Issue Editor

Dr. Oleg Siidra

E-Mail Website
Guest Editor
Department of Crystallography, Institute of Earth Sciences, St. Petersburg State University, St. Petersburg 199034, Russia
Interests: minerals; Earth sciences; crystallography; X-ray diffraction; inorganic chemistry; layered minerals and materials; exhalative minerals
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Molecular and hybrid organo-inorganic crystal structures play an outstanding role in modern chemistry. Aside from structural identity proofs of pure organics, the areas of their application range from molecular magnets to models of active centers of natural (enzymes) and synthetic catalysts, and from complex polynuclear species to endohedral structures, to name just a few recent topics. The various metal-organic and organically templated structures employed in solving major problems of current pure and applied chemistry are also interest—from size-selective separation to enantioselective catalysis, from the capture of toxic and radioactive agents to their selective oxidation–reduction, etc.

We invite specialists in molecular structural, magnetic, catalytic, and template chemistry to submit their contributions to this Special Issue addressing molecular and hybrid structures; we are particularly interested in papers which cover their synthesis, diagnostics, and applications.

Dr. Oleg Siidra
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. There is an Article Processing Charge (APC) for publication in this open access journal. For details about the APC please see here. Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Published Papers (2 papers)

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Research

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22 pages, 6332 KiB  
Article
Protonated Organic Diamines as Templates for Layered and Microporous Structures: Synthesis, Crystal Chemistry, and Structural Trends among the Compounds Formed in Aqueous Systems Transition Metal Halide or Nitrate–Diamine–Selenious Acid
by Dmitri O. Charkin, Evgeny V. Nazarchuk, Dmitri N. Dmitriev, Vasili Yu. Grishaev, Timofey A. Omelchenko, Darya V. Spiridonova and Oleg I. Siidra
Int. J. Mol. Sci. 2023, 24(18), 14202; https://doi.org/10.3390/ijms241814202 - 17 Sep 2023
Viewed by 949
Abstract
Systematic studies of crystalline compounds formed in aqueous systems containing aliphatic diamines, divalent transition metal halides, and selenious acid resulted in the discovery of a large family of new complex species corresponding to several new structure types. With ethylenediamine (en), layered (enH2 [...] Read more.
Systematic studies of crystalline compounds formed in aqueous systems containing aliphatic diamines, divalent transition metal halides, and selenious acid resulted in the discovery of a large family of new complex species corresponding to several new structure types. With ethylenediamine (en), layered (enH2)[M(HSeO3)2X2] compounds are the most commonly formed species which constitute a significant contribution to the family of layered hydrogen selenites containing neutral [M(HSeO3)2] (M = Mg, Mn, Co, Ni, Cu, Zn, Cd) 2D building blocks. In contrast to some previous suggestions, piperazine (pip), as well as its homologue N-methylpiperazine, mostly give rise to quite different, sometimes more complex, structures of varied dimensionality while the (pipH2)[M(HSeO3)2X2] compounds are formed only with M = Cu and Cd. In addition, metal-, halide-, or selenium-free by-product species are observed. The SeIV can be present in a multitude of forms, including H2SeO3, HSeO3−, SeO32−, and Se2O52−, reflecting amazing adaptability to the shape of the templating cations. Full article
(This article belongs to the Special Issue Recent Advances in Molecular and Hybrid Structures: Synthesis, Diagnostics, and Applications)
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Review

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37 pages, 13144 KiB  
Review
Organically Templated Uranyl Sulfates and Selenates: Structural Complexity and Crystal Chemical Restrictions for Isotypic Compounds Formation
by Elizaveta V. Durova, Ivan V. Kuporev and Vladislav V. Gurzhiy
Int. J. Mol. Sci. 2023, 24(16), 13020; https://doi.org/10.3390/ijms241613020 - 21 Aug 2023
Cited by 1 | Viewed by 1028
Abstract
This paper reviews the state of the art in the structural chemistry of organically templated uranyl sulfates and selenates, which are considered as the most representative groups of U-bearing synthetic compounds. In total, there are 194 compounds known for both groups, the crystal [...] Read more.
This paper reviews the state of the art in the structural chemistry of organically templated uranyl sulfates and selenates, which are considered as the most representative groups of U-bearing synthetic compounds. In total, there are 194 compounds known for both groups, the crystal structures of which include 84 various organic molecules. Structural studies and topological analysis clearly indicate complex crystal chemical limitations in terms of the isomorphic substitution implementation, since the existence of isotypic phases has to date been confirmed only for 24 compounds out of 194, which is slightly above 12%. The structural architecture of the entire compound depends on the combination of the organic and oxyanion parts, changes in which are sometimes realized even while maintaining the topology of the U-bearing complex. An increase in the size of the hydrocarbon part and number of charge functional groups of the organic cation leads to the formation of rare and more complex topologies. In addition, the crystal structures of two novel uranyl sulfates and one uranyl selenate, templated by isopropylammonium cations, are reported. Full article
(This article belongs to the Special Issue Recent Advances in Molecular and Hybrid Structures: Synthesis, Diagnostics, and Applications)
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