Special Issue "Chiral Metal Complexes and Their Hybrid Materials"

A special issue of Materials (ISSN 1996-1944).

Deadline for manuscript submissions: 31 October 2021.

Special Issue Editor

Prof. Dr. Takashiro Akitsu
E-Mail Website
Guest Editor

Special Issue Information

Dear Colleagues,

Besides sole-compounds, hybrid materials may be important for current chemistry and materials science. Of particular interest are organic/inorganic hybrid materials of (chiral) metal complexes and other functional materials such as photo-polymers, solid-state metal catalysts, and proteins. The expected superior functions of hybrid materials that are not exhibited by sole-compounds must be useful, as well as important, for both basic and applied purposes. However, supramolecular structures of such hybrid materials are not simple, and some method or index for structural information should be established. Recently, I have edited Special Issues entitled “Symmetric and Asymmetric Metal Complexes” and “Symmetry in Coordination Chemistry” in Symmetry (MDPI) and have explored the importance of chirality of metal complexes solely. In this Special Issue, I would like to expand the chirality from metal complex to hybrid materials including metal complexes. This Special Issue of Materials, “Chiral Metal Complexes and their Hybrid Materials”, features articles on such papers related to not only the chirality of metal complexes but also the resulting chirality of hybrid materials, supramolecular structures, or crystallography, photochemistry, and spectroscopy associated with the chirality of these materials.

Prof. Dr. Takashiro Akitsu
Guest Editor

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. Materials is an international peer-reviewed open access semimonthly 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 2000 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

  • metal complex
  • chirality
  • hybrid material
  • polymer
  • nano-particle
  • surface
  • biomaterials
  • photochemistry
  • magnetic property
  • redox
  • catalysis

Published Papers (1 paper)

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Research

Open AccessFeature PaperArticle
One-Pot Self-Assembly of Dinuclear, Tetranuclear, and H-Bonding-Directed Polynuclear Cobalt(II), Cobalt(III), and Mixed-Valence Co(II)/Co(III) Complexes of Schiff Base Ligands with Incomplete Double Cubane Core
Materials 2020, 13(23), 5425; https://doi.org/10.3390/ma13235425 - 28 Nov 2020
Viewed by 422
Abstract
The reaction of 2,6-diformyl-4-methylphenol (DFMF) with 1-amino-2-propanol (AP) and tris(hydroxymethyl)aminomethane (THMAM) was investigated in the presence of Cobalt(II) salts, (X = ClO4, CH3CO2, Cl, NO3), sodium azide (NaN3), [...] Read more.
The reaction of 2,6-diformyl-4-methylphenol (DFMF) with 1-amino-2-propanol (AP) and tris(hydroxymethyl)aminomethane (THMAM) was investigated in the presence of Cobalt(II) salts, (X = ClO4, CH3CO2, Cl, NO3), sodium azide (NaN3), and triethylamine (TEA). In one pot, the variation in Cobalt(II) salt results in the self-assembly of dinuclear, tetranuclear, and H-bonding-directed polynuclear coordination complexes of Cobalt(III), Cobalt(II), and mixed-valence CoIICoIII: [Co2III(H2L1)2(AP1)(N3)](ClO4)2 (1), [Co4(H2L1)23-1,1,1-N3)2(µ-1,1-N3)2Cl2(CH3OH)2]·4CH3OH (2), [Co2IICo2III(HL2)2(µ-CH3CO2)23-OH)2](NO3)2·2CH3CH2OH (3), and [Co2IICo2III (H2L12)2(THMAM−1)2](NO3)4 (4). In 1, two cobalt(III) ions are connected via three single atom bridges; two from deprotonated ethanolic oxygen atoms in the side arms of the ligands and one from the1-amino-2-propanol moiety forming a dinuclear unit with a very short (2.5430(11) Å) Co-Co intermetallic separation with a coordination number of 7, a rare feature for cobalt(III). In 2, two cobalt(II) ions in a dinuclear unit are bridged through phenoxide O and μ3-1,1,1-N3 azido bridges, and the two dinuclear units are interconnected by two μ-1,1-N3 and two μ3-1,1,1-N3 azido bridges generating tetranuclear cationic [Co4(H2L1)23-1,1,1-N3)2(µ-1,1-N3)2Cl2(CH3OH)2]2+ units with an incomplete double cubane core, which grow into polynuclear 1D-single chains along the a-axis through H-bonding. In 3, HL2− holds mixed-valent Co(II)/Co(III) ions in a dinuclear unit bridged via phenoxide O, μ-1,3-CH3CO2, and μ3-OH bridges, and the dinuclear units are interconnected through two deprotonated ethanolic O in the side arms of the ligands and two μ3-OH bridges generating cationic tetranuclear [Co2IICo2III(HL2)2(µ-CH3CO2)23-OH)2]2+ units with an incomplete double cubane core. In 4, H2L1−2 holds mixed-valent Co(II)/Co(III) ions in dinuclear units which dimerize through two ethanolic O (μ-RO) in the side arms of the ligands and two ethanolic O (μ3-RO) of THMAM bridges producing centrosymmetric cationic tetranuclear [Co2IICo2III (H2L12)2(THMAM−1)2]4+ units which grow into 2D-sheets along the bc-axis through a network of H-bonding. Bulk magnetization measurements on 2 demonstrate that the magnetic interactions are completely dominated by an overall ferromagnetic coupling occurring between Co(II) ions. Full article
(This article belongs to the Special Issue Chiral Metal Complexes and Their Hybrid Materials)
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