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Special Issue "Boron Chemistry and Its Development in the 21st Century: A Themed Issue Dedicated to Professor Bohumil Štíbr on the Occasion of His 80th Birthday"

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Inorganic Chemistry".

Deadline for manuscript submissions: 31 January 2020

Special Issue Editors

Guest Editor
Prof. Dr. Igor B. Sivaev

Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia
Website | E-Mail
Interests: Chemistry and application of polyhedral boron hydrides, including boranes, carboranes, and metallacarboranes
Guest Editor
Prof. Dr. Narayan S. Hosmane

Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL, United States
Website | E-Mail
Interests: Synthetic and structural chemistry of polyhedral boron cage biomolecules and nanostructured materials for cancer therapy, catalysis and extraction of radionuclides
Guest Editor
Dr. Bohumír Grűner

Institute of Inorganic Chemistry, v.v.i., Czech Academy of Sciences, Řež, Czech Republic
Website | E-Mail
Interests: Chemistry of boranes, carboranes and metallacatboranes; main focus on synthesis of derivatives designed as pharmacologically relevant enyzme inhibitors, polyhedral anions for extraction of radionuclides and chiral compounds

Special Issue Information

Dear Colleagues,

Prof. Dr. Bohumil Štíbr, born 15.07.1940 in Slaný, Czech Republic, is one of the most distinguished inorganic chemists who has made key contributions to the areas of boron chemistry. He graduated in Inorganic Chemistry at the University of Pardubice in 1962, where he also pursued his PhD (= CSc.), finishing in 1968 with a first-class degree award. Simultaneous to his studies, he was also very active in the area of boron cluster chemistry at Řež. He has been employed at the Institute of Inorganic Chemistry (IIC) at Řež since 1962.. He has been in charge of the IIC's boron group for ~25 years. In 1997 he defended his DrSc thesis. Essentially, he is employed in the Institute of Inorganic Chemistry of the Czech Academy of Sciences of the Czech Republic as Leading Research Scientist. Over this whole period of time he was working in the area of cluster-boron chemistry. He is author/co-author of ~300 scientific papers in impacted journals and several book contributions, mostly in the area of carboranes, main-group heteroboranes, and macropolyhedral boranes. He participated in the invention of ~30 new parent (unsubstituted) carboranes. In 1995 he discovered a new genre of carborane compounds (11-vertex tricarbaboranes, so called tricarbollides). Recently, he was involved in the area of alkylation reactions in the ten-vertex borane and carborane series.

Prof. Dr. Štíbr has received several awards, including two medals of the University of Pardubice, two prizes of the Czech Academy of Sciences of the Czech Republic, and the Alexander von Humboldt Prize (D, 2001). He has held several Visiting Professorships worldwide: University of California at LA, 6 months Research Fellow (1972); University of Leeds, UK, 6 months, Visiting Professor (1987); Institute of Materials, Bellaterra, Spain, 18 months, Visiting Professor (1995–6); and University of Bayreuth, D, Alex. von Humbolld Stifftung, 1 year, Visiting Professor (2001).

Molecules is pleased to announce a Special Issue honoring Bohumil Štíbr on the occasion of his 80th birthday for his outstanding achievements in boron chemistry. This Special Issue is dedicated to all aspects of boron chemistry, including cluster and inorganic boron chemistry (including boranes, carboranes, metallaboranes, metallacarboranes, aminoboranes, transition metal complexes of boron, etc.), organic and bioorganic boron chemistry (including boron-based Lewis acids, boronic acids and its complexes, benzoxaboroles, the application of boron reagents in organic synthesis), boron in materials (including polymers, dendrimers, ionic liquids, liquid crystals, hydrogen storage, catalysis, etc.), and boron in medicine (including boron neutron capture of cancer, carborane pharmacophores, boron-containing drugs, boronic acid-based sugar sensors, etc.).

It is a pleasure to invite you to submit a manuscript to this Special Issue; regular articles, communications, as well as reviews are all welcome.

Prof. Dr. Igor B. Sivaev
Prof. Dr. Narayan S. Hosmane
Dr. Bohumír Grűner
Guest Editors

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 papers will be 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. Molecules 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 1800 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

  • Boranes
  • Carboranes
  • Metallaboranes
  • Metallacarboranes
  • Transition metal–boron complexes
  • Boron-based Lewis acids
  • Aminoboranes
  • Boronic acids
  • Boron-based materials
  • Boron-based drugs
  • Boron neutron capture therapy

Published Papers (3 papers)

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Research

Open AccessCommunication
N-Heterocyclic Carbene Adducts of Alkynyl Functionalized 1,3,2-Dithioborolanes
Molecules 2019, 24(9), 1690; https://doi.org/10.3390/molecules24091690
Received: 4 April 2019 / Revised: 25 April 2019 / Accepted: 29 April 2019 / Published: 30 April 2019
PDF Full-text (953 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Alkynyl functionalized boron compounds are versatile intermediates in the areas of medicinal chemistry, materials science, and optical materials. In particular, alkynyl boronate esters [R1−C≡C−B(OR2)2] are of interest since they provide reactivity at both the alkyne entity, with [...] Read more.
Alkynyl functionalized boron compounds are versatile intermediates in the areas of medicinal chemistry, materials science, and optical materials. In particular, alkynyl boronate esters [R1−C≡C−B(OR2)2] are of interest since they provide reactivity at both the alkyne entity, with retention of the B−C bond or alkyne transfer to electrophilic substrates with scission of the latter. The boron atom is commonly well stabilized due to (i) the extraordinary strength of two B−O bonds, and (ii) the chelate effect exerted by a bifunctional alcohol. We reasoned that the replacement of a B−O for a B−S bond would lead to higher reactivity and post-functionalization in the resulting alkynyl boronate thioesters [R1−C≡C−B(S2X)]. Access to this poorly investigated class of compounds starts form chloro dithioborolane cyclo-Cl−B(S2C2H4) as a representative example. Whereas syntheses of three coordinate alkynyl boronate thioesters [R1−C≡C−B(S2X)] proved to be ineffective, the reactions of NHC-adducts (NHC = N-heterocyclic carbene) of cyclo-Cl-B(S2C2H4) afforded the alkyne substituted thioboronate esters in good yield. The products NHC−B(S2C2H4)(C≡C-R1) are remarkably stable towards water and air, which suggests their use as boron-based building blocks for applications akin to oxygen-based boronate esters. Full article
Figures

Graphical abstract

Open AccessCommunication
NNB-Type Tridentate Boryl Ligands Enabling a Highly Active Iridium Catalyst for C–H Borylation
Molecules 2019, 24(7), 1434; https://doi.org/10.3390/molecules24071434
Received: 5 March 2019 / Revised: 5 April 2019 / Accepted: 5 April 2019 / Published: 11 April 2019
Cited by 1 | PDF Full-text (1387 KB) | HTML Full-text | XML Full-text | Correction | Supplementary Files
Abstract
Boryl ligands play a very important role in catalysis because of their very high electron-donating property. In this paper, NNB-type boryl anions were designed as tridentate ligands to promote aryl C–H borylation. In combination with [IrCl(COD)]2, they generate a highly active [...] Read more.
Boryl ligands play a very important role in catalysis because of their very high electron-donating property. In this paper, NNB-type boryl anions were designed as tridentate ligands to promote aryl C–H borylation. In combination with [IrCl(COD)]2, they generate a highly active catalyst for a broad range of (hetero)arene substrates, including highly electron-rich and/or sterically hindered ones. This work provides a new NNB-type tridentate boryl ligand to support homogeneous organometallic catalysis. Full article
Figures

Graphical abstract

Open AccessArticle
The Studies on Structure and Stability of CaBn Clusters
Molecules 2019, 24(6), 1011; https://doi.org/10.3390/molecules24061011
Received: 22 January 2019 / Revised: 5 March 2019 / Accepted: 5 March 2019 / Published: 13 March 2019
PDF Full-text (4313 KB) | HTML Full-text | XML Full-text
Abstract
Calcium-boron systems have excellent properties of hardness, strength, and chemical stability, and we studied a series of CaBn clusters to investigate their structures and relative stability. The results showed the most stable structures of CaBn clusters are not planar. The B [...] Read more.
Calcium-boron systems have excellent properties of hardness, strength, and chemical stability, and we studied a series of CaBn clusters to investigate their structures and relative stability. The results showed the most stable structures of CaBn clusters are not planar. The B atoms tend to get together and form the planar ring to stabilize the structure, and the Ca atoms are coordinated to the periphery of the formations. The average binding energy (Eb), fragmentation energy (EF), second-order energy difference (Δ2E), adiabatic detachment energy (ADE), and adiabatic electron affinity (AEA) of the CaBn clusters were calculated to investigate the relative stability and the ability of removing or obtaining an electron. As shown by the results, EF and Δ2E values had obvious odd-even alteration as n increased, which indicated that the formations CaB4, CaB6, and CaB8 were more stable. The ADE values for CaBn clusters with even values of n were higher than those with odd values of n, which indicated CaBn clusters with even values of n had difficultly removing an electron. The AEA values of CaB3 and CaB7 were larger than the others, which meant CaB3 and CaB7 easily obtained an electron. These results provide a useful reference for understanding the formation mechanism and stability of the alkaline earth metal boride as well as guidance for synthesizing the CaBn clusters. Full article
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Figure 1

Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

  1. Author: Alan J.E. Welch

Affiliation: Heriot-Watt University, Edinburgh, Institute of Chemical Sciences, Edinburgh, United Kingdom

  1. Author: Jose Giner

Affiliation: State University of New York Upstate Medical University, Department of Chemistry, Syracuse, United States

  1. Author: Yinghuai Zhu

Affiliation: Macau University of Science and Technology, State Key Laboratory of Quality Research in Chinese Medicine, Taipa, Macao

  1. Author: Matthias Scholz

Affiliation: Bonn Pharmazeutisches Institut, Rheinische Friedrich-Wilhelms-Universität

  1. Author: Subash Jonnalagadda

Affiliation: Department of Chemistry & Biochemistry, Department of Biomedical & Translational Sciences

  1. Author: Clara Viñas Teixidor

Affiliation: Institut de Ciència de Materials de Barcelona, Campus UAB, 08193 Bellaterra, Barcelona

  1. Author: Rosario Núñez Aguilera

Affiliation: Institut de Ciència de Materials de Barcelona, Campus UAB, 08193 Bellaterra, Barcelona

  1. Type of paper: research article

Tentative title: A High-Yield Conversion of B11H14(-) to CB11H12(-).

Authors: Jacek Pecyna and Josef Michl

Affiliations:  University of Colorado and Czech Academy of Sciences

  1. Type of the paper: article

Tentative title: MECHANISM OF FORMATION AND CRYSTAL STRUCTURE OF 3,5-DI(PHENYL-O-CARBORANYL)BUTEROLIDE

Authors: Ye.M. Suleimen1, K. Van Hecke2, A.V. Kazantsev, G.G. Sissengaliyeva1, K. Akatan3

Affiliations:  1. Institute of Applied Chemistry, L.N. Gumilyov Eurasian National University, 010008, Republic of Kazakstan, Astana, 2  Satpaev str., e-mail: [email protected]; 2. XStruct, Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281-S3, B-9000 Ghent, Belgium; 3.  S. Amanzholov Lab. NMR spectroscopy of the East Kazakhstan State University, Republic of Kazakhstan, Oskemen

Abstract:For the first time, the synthesis of 3,5-di(phenyl-o-carboranyl)buterolide 2 was carried out and its crystal structure was established.

10. Author: Christine Goze

Affiliation: ICMUB Institut de Chimie Moléculaire de l'Université de Bourgogne

11. Type of paper: review

Title: The Reversible Sequestration of Small Molecules by Bimetellaborane Cage Compounds

Authors: John D Kennedy, Jonathan Bould and Michael Londesborough

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