Metal Interactions with Boron Clusters

Metal Interactions with Boron Clusters PDF

Author: Russell N. Grimes

Publisher: Springer Science & Business Media

Published: 2013-11-11

Total Pages: 335

ISBN-13: 1489921540

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Molecular clusters, in the broad sense that the term is commonly understood, today comprise an enormous class of species extending into virtually every important area of chemistry: "naked" metal clusters, transition metal carbonyl clusters, hydrocarbon cages such as cubane (C H ) and dodecahedrane (C H ), 8 8 20 20 organometallic cluster complexes, enzymes containing Fe S or MoFe S 4 4 3 4 cores, high polymers based on carborane units, and, of course, the many kinds of polyhedral borane species. So large is the area spanned by these diverse classes that any attempt to deal with them comprehensively in one volume would, to say the least, be ambitious-and also premature. We are presently at a stage where intriguing relationships between the various cluster families are becoming apparent (particularly in terms of bonding descriptions), and despite large dif ferences in their chemistry an underlying unity is gradually developing in the field. For example, structural changes occurring in Fe S cores as electrons are 4 4 pumped in and out, in some measure resemble those observed in boranes and carboranes. The cleavage of alkynes via incorporation into carborane cages and subsequent cage rearrangement, a sequence familiar to boron chemists, is a thermodynamically favored process which may be related to the behavior of unsaturated hydrocarbons on metal surfaces; analogies of this sort have drawn attention from theorists and experimentalists.

Metal Complexes Containing Boron Based Ligands

Metal Complexes Containing Boron Based Ligands PDF

Author: Gareth Owen

Publisher: MDPI

Published: 2019-10-30

Total Pages: 110

ISBN-13: 3039215841

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Boron-based compounds have been utilized as ligands within transition metal complexes for many decades. The diversity of such compounds in terms of varying functional groups is truly exceptional. Boron compounds are of high interest due to the great potential to modify the substituents around the boron center and to produce a broad range of structural motifs. The many different ways these compounds can coordinate or interact with transition metal centers is astonishing. Examples of transition metal complexes containing boron-based ligands include scorpionates, cluster-type borane- and carboranes, borates, and phosphine-stabilized borylene ligands. This Special Issue brings together a collection of articles focusing on recent developments in the aforementioned boron-based ligands. The articles reported in this book will provide the reader with an overview of the types of boron-based ligands which are currently being researched in groups around the world.

Boron-Based Compounds

Boron-Based Compounds PDF

Author: Evamarie Hey-Hawkins

Publisher: John Wiley & Sons

Published: 2018-07-23

Total Pages: 490

ISBN-13: 1119275555

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Noted experts review the current status of boron-containing drugs and materials for molecular medical diagnostics Boron-Based Compounds offers a summary of the present status and promotes the further development of new boron-containing drugs and advanced materials, mostly boron clusters, for molecular medical diagnostics. The knowledge accumulated during the past decades on the chemistry and biology of bioorganic and organometallic boron compounds laid the foundation for the emergence of a new area of study and application of boron compounds as lipophilic pharmacophores and modulators of biologically active molecules.This important text brings together in one comprehensive volume contributions from renowned experts in the field of medicinal chemistry of boron compounds. The authors cover a range of the most relevant topics including boron compounds as modulators of the bioactivity of biomolecules, boron clusters as pharmacophores or for drug delivery, boron compounds for boron neutron capture therapy (BNCT) and for diagnostics, as well as in silico molecular modeling of boron- and carborane-containing compounds in drug design. Authoritative and accessible, Boron-Based Compounds: Contains contributions from a panel of internationally renowned experts in the field Offers a concise summary of the current status of boron-containing drugs and materials used for molecular diagnostics Highlights the range and capacity of boron-based compounds in medical applications Includes information on boron neutron capture therapy and diagnostics Designed for academic and industrial scientists, this important resource offers the cutting-edge information needed to understand the current state of boron-containing drugs and materials for molecular medical diagnostics.

Carboranes

Carboranes PDF

Author: Russell N. Grimes

Publisher: Academic Press

Published: 2011-03-10

Total Pages: 1159

ISBN-13: 012374170X

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Carboranes, Second Edition is designed as a comprehensive source of information in a field that has experienced enormous growth in both its fundamental and applied aspects in the four decades since the publication of Carboranes (1970). During this long period thousands of original research papers have appeared, along with many review articles and book chapters dealing with aspects of carborane chemistry. As carborane science has grown in complexity, and applications have advanced steadily in areas such as medicine, nanostructured and electroactive materials, catalysis, polymers, and others, the need for a monograph covering the entire area in a unified treatment has become increasingly apparent. This volume has two principal objectives, the first of which is to provide a readable and concise introduction to the basic principles underlying the synthesis, structures, reactivity, and applications of carboranes and metallacarboranes at a level suitable for readers in industry and academe who are not trained in boron chemistry but find themselves working with, or lecturing about carboranes. Secondly, the book furnishes a trove of detailed information for workers active in carborane science and associated technologies. To that end, it incorporates tables listing thousands of specific compounds keyed to literature references, together with more than 2,000 molecular structure drawings that illuminate the accompanying discussion. Thorough treatment of the synthesis, structures, and reactions of carboranes, heterocarboranes, and metallacarboranes in the first 13 chapters is followed by four chapters detailing advances in practical applications in polymer science, catalysis, medicine, and other areas. Includes over 2,000 molecular structure drawings throughout the text Features tables listing thousands of compounds with key literature references

Molecular Clusters of the Main Group Elements

Molecular Clusters of the Main Group Elements PDF

Author: Matthias Driess

Publisher: John Wiley & Sons

Published: 2008-11-21

Total Pages: 460

ISBN-13: 3527614370

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With more than 20 contributions from leading research groups, this book provides essential information for chemists and materials scientists working with molecular clusters. It treats both homonuclear and heteronuclear clusters, including: the theory and concepts in main-group cluster chemistry, * novel boranes and heteroboranes, * silicon/germanium/tin clusters, * alkali metal suboxides, * clusters in alloys with mercury, * chalkogen clusters * and numerous other compound classes. The whole is illustrated by examples of the great potential for technical applications such as electron storage, cancer therapy and in optoelectronic devices. Its systematic coverage of all relevant main group elements makes this the prime reference source in the field.

Boranes and Metallaboranes

Boranes and Metallaboranes PDF

Author: Catherine E. Housecroft

Publisher:

Published: 1994

Total Pages: 180

ISBN-13:

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This concise introduction to boranes and metalloboranes employs an informal and straightforward style. The author establishes facts first, and rationalization and theories follow. Ideas of cluster bonding are presented, and the author surveys different approaches to the bonding in clusters, emphasizing the use of frontier molecule orbitals and the construction of clusters from fragments. The application of spectroscopic techniques to the elucidation of cluster structure is discussed, with an emphasis on multinuclear NMR spectroscopy. The second edition includes an update on structural data for boranes and their anions. Sections on spectroscopy and the reactivity of metalloboranes have been slightly expanded and references have been updated.