Special Issue "Metal Phosphates and Phosphonates"

A special issue of Inorganics (ISSN 2304-6740). This special issue belongs to the section "Inorganic Solid-State Chemistry".

Deadline for manuscript submissions: closed (31 May 2019).

Special Issue Editors

Prof. Dr. Abraham Clearfield
E-Mail Website
Guest Editor
Department of Chemistry, Texas A and M University, 400 Bizzell St, College Station, TX 77843, USA
Interests: solid-state chemistry; layered materials; crystallography; metal phosphonate chemistry
Prof. Dr. Luyi Sun
E-Mail Website
Guest Editor
Institute of Materials Science, University of Connecticut, 97 North Eagleville Road, Unit 3136, Storrs, CT 06269-3136, USA
Interests: solid state chemistry; layered compounds; clays; hydrates; polymers; composites; green science

Special Issue Information

Dear Colleagues,

It has been surprising over the last few years that there has been an increase in high-level and diverse papers based on metal phosphate and phosphonate chemistry. A survey of these papers has shown significant progress in the areas of catalysis, magnetic cages, combinations with MOFs, drug delivery, and polymer composites. These compounds exhibit fascinating structures (of all types), including amorphous materials. Because of their structural differences, they exhibit extraordinary properties with a great variety of potential uses. Among these, we can include energy storage, sensors, biosensors, flame retardants, and many more. 

Because of the great potential of these metal phosphates and phosphonates, we would like to bring together a variety of areas of research of these compounds. Therefore, we are proposing the formation of a Special Issue that will publish the very best recent papers on metal phosphates and phosphonates, along the lines of the areas of interest that are listed below:

  • Catalysis
  • MOFs
  • Polymers
  • Layered Materials
  • Magnetic Materials
Prof. Dr. Abraham Clearfield
Prof. Dr. Luyi Sun

Guest Editors

Manuscript Submission Information

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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. Inorganics is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1000 CHF (Swiss Francs). 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.

Keywords

  • Catalysis
  • MOFs
  • Polymers
  • Layered Materials
  • Magnetic Materials

Published Papers (3 papers)

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Research

Open AccessArticle
High-Throughput Synthesis of Pillared-Layered Magnesium Tetraphosphonate Coordination Polymers: Framework Interconversions and Proton Conductivity Studies
Inorganics 2018, 6(3), 96; https://doi.org/10.3390/inorganics6030096 - 11 Sep 2018
Cited by 1
Abstract
Novel pillared-layered framework materials were synthesized by high-throughput or microwave-assisted methodology that contain Mg2+ and the zwitterionic linker HDTMP (hexamethylenediamine-N,N,N′,N′-tetrakis(methylenephosphonic acid)). Three compounds were structurally characterized by X-ray powder diffraction. In the compound {Mg[(HO3PCH [...] Read more.
Novel pillared-layered framework materials were synthesized by high-throughput or microwave-assisted methodology that contain Mg2+ and the zwitterionic linker HDTMP (hexamethylenediamine-N,N,N′,N′-tetrakis(methylenephosphonic acid)). Three compounds were structurally characterized by X-ray powder diffraction. In the compound {Mg[(HO3PCH2)2N(CH2)6N(CH2PO3H2)2]·(H2O)}n(1), obtained at 140 °C by hydrothermal or microwave-assisted reaction, the layers are built by isolated Mg2+ octahedra coordinated by oxygen atoms from six different zwitterionic HDTMP ligands. Each amino-bis(methylenephosphonate) moiety links three Mg2+ ions, bridging two of them through one phosphonate group and connecting the third polyhedron in a monodentate fashion. In Compound 2, {Mg[(HO3PCH2)2N(CH2)6N(CH2PO3H2)2]}n, hydrothermally synthesized at 180 °C, the layers are composed of bidentate amino-bis(methylenephosphonate) moieties connected to three Mg2+ ions, with one of the phosphonate groups acting as a bridging ligand. Various subtle structural changes are noted for the other two compounds. Thermodiffraction of 1 reveals that a crystalline-to-crystalline phase transformation occurs concomitantly with its dehydration, leading to a new anhydrous phase, namely, {Mg[(HO3PCH2)2N(CH2)6N(CH2PO3H2)2]}n(1deh). This process is fully reversible upon equilibrating the solid at room temperature. The reported compounds can adsorb ammonia and CO2. Compound 1 exhibits a moderate proton conductivity, ~1.5 × 10−5 S·cm−1 at 80 °C and 95% RH, that increases a half order of magnitude after experiencing a complete dehydration/rehydration process, 11deh1. Full article
(This article belongs to the Special Issue Metal Phosphates and Phosphonates)
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Open AccessArticle
One-Dimensional Fluorene-Based Co(II) Phosphonate Co(H2O)2PO3C–C12H9·H2O: Structure and Magnetism
Inorganics 2018, 6(3), 93; https://doi.org/10.3390/inorganics6030093 - 05 Sep 2018
Abstract
A new Co(II) phosphonate, Co(H2O)2PO3C–C12H9·H2O, has been synthesized under hydrothermal conditions. The monoclinic P21/c structure of this organic–inorganic hybrid consists of isolated perovskite-type chains of corner-shared CoO [...] Read more.
A new Co(II) phosphonate, Co(H2O)2PO3C–C12H9·H2O, has been synthesized under hydrothermal conditions. The monoclinic P21/c structure of this organic–inorganic hybrid consists of isolated perovskite-type chains of corner-shared CoO4(H2O)2 octahedra interconnected via phosphonate groups. The unique one-dimensional structure of this phase is closely related to the single-chain magnet (SCM) phosphonate Co(H2L)(H2O), with L = 4-Me-C6H4-CH2N(CPO3H2)2, that contains isolated chains of CoO5N octahedra. Like the latter, this hybrid exhibits 1D antiferromagnetic interactions and the possibility of an effective pseudo spin contribution due to spin canting at low temperature, but, in contrast, is not an SCM. This different magnetic behavior is explained by the different geometry of the octahedral chains and by the possible existence of weak antiferromagnetic interactions between the chains. This opens the route to the investigation of a large series of compounds by tuning the chemical composition and structure of the phosphonic acid used as organic precursor of hybrid materials. Full article
(This article belongs to the Special Issue Metal Phosphates and Phosphonates)
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Open AccessArticle
Manganese Fluorene Phosphonates: Formation of Isolated Chains
Inorganics 2018, 6(3), 92; https://doi.org/10.3390/inorganics6030092 - 05 Sep 2018
Cited by 1
Abstract
9,9-dimethylfluorenyl-2-phosphonic acid 1 was reacted with manganese nitrate tetrahydrate to produce under hydrothermal conditions the crystalline manganese phosphonate Mn(H2O)2[O2(OH)PC15H13]2·2H2O which crystallize in the P21/c space [...] Read more.
9,9-dimethylfluorenyl-2-phosphonic acid 1 was reacted with manganese nitrate tetrahydrate to produce under hydrothermal conditions the crystalline manganese phosphonate Mn(H2O)2[O2(OH)PC15H13]2·2H2O which crystallize in the P21/c space group. This compound is a rare example of Mn-phosphonate material featuring isolated chains. The interactions between these chains containing the 9,9-dimethylfluorenyl moieties, result from Van der Waals interactions involving the fluorene ligands and C···H–C hydrogen bonds as revealed by Hirshfeld Surfaces. This material features antiferromagnetic exchange interactions as revealed by the magnetic susceptibility as a function of the temperature. Full article
(This article belongs to the Special Issue Metal Phosphates and Phosphonates)
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