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Modulating Electronic Structure And Reactivity Of Cr Nitride Complexes Via Xxidation
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Book Synopsis Modulating Electronic Structure and Reactivity of Cr Nitride Complexes Via Xxidation by : Diego Martelino
Download or read book Modulating Electronic Structure and Reactivity of Cr Nitride Complexes Via Xxidation written by Diego Martelino and published by . This book was released on 2020 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal nitride complexes exhibit interesting structure and bonding properties that are invoked when discussing the reactivity of these systems. The nitride (N3-) moiety can be either nucleophilic or electrophilic based on a variety of factors such as metal identity, oxidation state, and nature of the ancillary ligands. Herein, the electronic tuning of Cr salen nitride complexes is investigated via modulation of phenolate para-R substituents of varying electron donating ability (R = CF3, tBu, NMe2) in order to influence reactivity. Salen ligands can exhibit non-innocent behavior, implying that redox processes can either be metal or ligand-based. This feature allows the ligand to help facilitate difficult substrate transformations uncommon to Earth-abundant first-row metals. Depending on the para-R group, the locus of oxidation in Cr nitride salen complexes (metal vs. ligand) can be influenced. The electronic structure of oxidized compounds is detailed, allowing for rationalization of nitride reactivity based on oxidation locus.
Book Synopsis Tuning the Electronic Structure and Reactivity of Oxidized Chromium Salen Nitride Complexes by : Warren VandeVen
Download or read book Tuning the Electronic Structure and Reactivity of Oxidized Chromium Salen Nitride Complexes written by Warren VandeVen and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transition metal nitride (N3-) complexes exhibit useful reactivity towards heteroatom transfer, as well as providing valuable insight into the mechanisms of dinitrogen reduction and ammonia oxidation. Salen ligands are capable of forming complexes with a large number of metal ions in different oxidation states and are thus a versatile platform in coordination chemistry research. By incorporating salen ligands with a variety of R-group substituents at the para position of the phenolate moieties, the electronic structure and thus the reactivity of the nitride ligand can be modified. This thesis will focus on the synthesis, characterization and reactivity of Cr nitride complexes bearing modified salen ligands (R = NO2, CF3, tBu, OMe, OiPr, NMe2, and NEt2). Salen ligands are well-known for their ability to form ligand radicals upon oxidation, as opposed to metal-based oxidation. Oxidation of CrNSalNMe2 and CrNSalNEt2 yields CrV ligand radical species, whereas the other less donating R-groups yield high-valent CrVI nitride complexes. Oxidized complexes were characterized by both experimental and theoretical techniques including UV-vis-NIR spectroscopy, electron paramagnetic resonance spectroscopy, electrochemistry, and density functional theory calculations. Depending on the locus of oxidation, desirable reactivity may be observed such as C-H bond activation. The addition of exogenous ligands may further activate the nitride ligand and facilitate homocoupling or C-H bond activation pathways.
Book Synopsis Electronic Structure and Reactivity of Transition Metal Complexes Incorporating Pro-radical Bis-phenoxide Ligands by : Ryan Michael Clarke
Download or read book Electronic Structure and Reactivity of Transition Metal Complexes Incorporating Pro-radical Bis-phenoxide Ligands written by Ryan Michael Clarke and published by . This book was released on 2018 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transition metal complexes with pro-radical ligands have received considerable research attention due to their interesting electronic structures, photophysical properties, and applications in catalysis. The relative ordering of metal and ligand frontier orbitals in a complex incorporating pro-radical ligands dictates whether oxidation/reduction occurs at the metal centre or at the ligand. Many metalloenzymes couple redox events at multiple metal centres or between metals and pro-radical ligands to facilitate multielectron chemistry. Owing to the simplicity of the active sites, many structural and functional models have been studied. One class of pro-radical ligand that has been investigated extensively are bis-imine bis-phenoxide ligands (i.e. salen) due to their highly modular syntheses. In this thesis, projects related to the synthesis, electronic structure, and reactivity of mono and bimetallic complexes incorporating the salen framework are explored. Chapter 2 presents a systematic investigation of the effects of geometry on the electronic structure of four bis-oxidized bimetallic Ni salen species. The tunability of their intense intervalence charge transfer (IVCT) transitions in the near infrared (NIR) by nearly 400 nm due to exciton coupling in the excited states is described. For the first time, this study demonstrates the applicability of exciton coupling to ligand radical systems absorbing in the NIR region. Chapter 3 investigates the ground-state electronic structure of a bis-oxidized Co dimer. Enhanced metal participation to the singly occupied molecular orbitals results in both high spin Co(III) and Co(II)-L• character in the ground state, and no observable band splitting in the NIR due to exciton coupling. Finally, Chapter 4 describes a series of oxidized nitridomanganese(V) salen complexes with different para ring substituents (R = CF3, tBu, and NMe2), demonstrating that nitride activation is dictated by remote ligand electronics. Upon one-electron oxidation, electron deficient ligands afford a Mn(VI) species and nitride activation, whereas an electron-rich ligand results in ligand based oxidation and resistance to N coupling of the nitrides. This study highlights the alternative reactivity pathways that pro-radical ligands impose on metal complexes and represents a key step in the use of NH3 as a hydrogen storage medium. The results presented herein provide a starting point for further efforts in reactivity with the salen platform.
Book Synopsis Handbook of Chalcogen Chemistry by : Francesco A. Devillanova
Download or read book Handbook of Chalcogen Chemistry written by Francesco A. Devillanova and published by Royal Society of Chemistry. This book was released on 2013 with total page 611 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook of Chalcogen Chemistry provides an overview of recent developments on the chemistry of the chalcogen group elements (S, Se and Te).
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Book Synopsis Activation of Small Molecules by : William B. Tolman
Download or read book Activation of Small Molecules written by William B. Tolman and published by John Wiley & Sons. This book was released on 2006-12-13 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first to combine both the bioinorganic and the organometallic view, this handbook provides all the necessary knowledge in one convenient volume. Alongside a look at CO2 and N2 reduction, the authors discuss O2, NO and N2O binding and reduction, activation of H2 and the oxidation catalysis of O2. Edited by the highly renowned William Tolman, who has won several awards for his research in the field.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975-02 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics Briefs written by and published by . This book was released on 1993 with total page 1058 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pincer and Pincer-Type Complexes by : Kálmán J. Szabó
Download or read book Pincer and Pincer-Type Complexes written by Kálmán J. Szabó and published by John Wiley & Sons. This book was released on 2014-06-10 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new book on this hot topic summarizes the key achievements for the synthesis and catalytic applications of pincer and pincer-type complexes, providing readers with the latest research highlights. The editors have assembled an international team of leaders in the field, and their contributions focus on the application of various pincer complexes in modern organic synthesis and catalysis, such as C-C and C-X bond forming reactions, C-H bond functionalization, and the activation of small molecules, as well as asymmetric catalysis. A must-have for every synthetic chemist in both academia and industry intending to develop new catalysts and improved synthetic protocols.
Book Synopsis Springer Handbook of Inorganic Photochemistry by : Detlef Bahnemann
Download or read book Springer Handbook of Inorganic Photochemistry written by Detlef Bahnemann and published by Springer Nature. This book was released on 2022-06-25 with total page 1914 pages. Available in PDF, EPUB and Kindle. Book excerpt: The handbook comprehensively covers the field of inorganic photochemistry from the fundamentals to the main applications. The first section of the book describes the historical development of inorganic photochemistry, along with the fundamentals related to this multidisciplinary scientific field. The main experimental techniques employed in state-of-art studies are described in detail in the second section followed by a third section including theoretical investigations in the field. In the next three sections, the photophysical and photochemical properties of coordination compounds, supramolecular systems and inorganic semiconductors are summarized by experts on these materials. Finally, the application of photoactive inorganic compounds in key sectors of our society is highlighted. The sections cover applications in bioimaging and sensing, drug delivery and cancer therapy, solar energy conversion to electricity and fuels, organic synthesis, environmental remediation and optoelectronics among others. The chapters provide a concise overview of the main achievements in the recent years and highlight the challenges for future research. This handbook offers a unique compilation for practitioners of inorganic photochemistry in both industry and academia.
Book Synopsis Faculties, Publications, and Doctoral Theses in Chemistry and Chemical Engineering at United States Universities by : American Chemical Society. Committee on Professional Training
Download or read book Faculties, Publications, and Doctoral Theses in Chemistry and Chemical Engineering at United States Universities written by American Chemical Society. Committee on Professional Training and published by . This book was released on 1991 with total page 1646 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Progress in Inorganic Chemistry, Volume 58 by : Kenneth D. Karlin
Download or read book Progress in Inorganic Chemistry, Volume 58 written by Kenneth D. Karlin and published by John Wiley & Sons. This book was released on 2014-03-11 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt: This series provides inorganic chemists and materials scientists with a forum for critical, authoritative evaluations of advances in every area of the discipline. Volume 58 continues to report recent advances with a significant, up-to-date selection of contributions by internationally-recognized researchers. The chapters of this volume are devoted to the following topics: • Tris(dithiolene) Chemistry: A Golden Jubilee • How to find an HNO needle in a (bio)-chemical Haystack • Photoactive Metal Nitrosyl and Carbonyl Complexes Derived from Designed Auxiliary Ligands: An Emerging Class of Photochemotherapeutics • Metal--Metal Bond-Containing Complexes as Catalysts for C--H Functionalization Iron Catalysis in Synthetic Chemistry • Reactive Transition Metal Nitride Complexes Suitable for inorganic chemists and materials scientists in academia, government, and industries including pharmaceutical, fine chemical, biotech, and agricultural.
Book Synopsis Modern Inorganic Synthetic Chemistry by : Ruren Xu
Download or read book Modern Inorganic Synthetic Chemistry written by Ruren Xu and published by Elsevier. This book was released on 2011-01-13 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: The contributors to this book discuss inorganic synthesis reactions, dealing with inorganic synthesis and preparative chemistry under specific conditions. They go on to describe the synthesis, preparation and assembly of six important categories of compounds with wide coverage of distinct synthetic chemistry systems
Download or read book Metals Abstracts written by and published by . This book was released on 1998 with total page 1076 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography written by Pierre Villars and published by Walter de Gruyter. This book was released on 2012-12-21 with total page 1827 pages. Available in PDF, EPUB and Kindle. Book excerpt: By browsing about 10 000 000 scientific articles of over 200 major journals mainly in a 'cover to cover approach' some 200 000 publications were selected. The extracted data is part of the following fundamental material research fields: crystal structures (S), phase diagrams (also called constitution) (C) and the comprehensive field of intrinsic physical properties (P). This work has been done systematically starting with the literature going back to 1900. The above mentioned research field codes (S, C, P) as well as the chemical systems investigated in each publication were included in the present work. The aim of the Inorganic Substances Bibliography is to provide researchers with a comprehensive compilation of all up to now published scientific publications on inorganic systems in only three handy volumes.
Book Synopsis Alkane Functionalization by : Armando J. L. Pombeiro
Download or read book Alkane Functionalization written by Armando J. L. Pombeiro and published by John Wiley & Sons. This book was released on 2019-03-11 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents state-of-the-art information concerning the syntheses of valuable functionalized organic compounds from alkanes, with a focus on simple, mild, and green catalytic processes Alkane Functionalization offers a comprehensive review of the state-of-the-art of catalytic functionalization of alkanes under mild and green conditions. Written by a team of leading experts on the topic, the book examines the latest research developments in the synthesis of valuable functionalized organic compounds from alkanes. The authors describe the various modes of interaction of alkanes with metal centres and examine theoxidative alkane functionalization upon C-O bond formation. They address the many types of mechanisms, discuss typical catalytic systems and highlight the strategies inspired by biological catalytic systems. The book also describes alkane functionalization upon C-heteroatom bond formation as well as oxidative and non-oxidative approaches. In addition, the book explores non-transition metal catalysts and metal-free catalytic systems and presents selected types of functionalization of sp3 C-H bonds pertaining to substrates other than alkanes. This important resource: Presents a guide to the most recent advances concerning the syntheses of valuable functionalized organic compounds from alkanes Contains information from leading experts on the topic Offers information on the catalytic functionalization of alkanes that allows for improved simplicity and sustainability compared to current multi-stage industrial processes Explores the challenges inherent with the application of alkanes as starting materials for syntheses of added value functionalized organic compounds Written for academic researchers and industrial scientists working in the fields of coordination chemistry, organometallic chemistry, catalysis, organic synthesis and green chemistry, Alkane Functionalization is an important resource for accessing the most up-to-date information available in the field of catalytic functionalization of alkanes.
Book Synopsis Multiple Bonds between Metal Atoms by : F. Albert Cotton
Download or read book Multiple Bonds between Metal Atoms written by F. Albert Cotton and published by Springer Science & Business Media. This book was released on 2005-06-28 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides historical perspective as well as current data Abundantly illustrated with figures redrawn from literature data Covers all pertinent theory and physical chemistry Catalytic and chemotherapeutic applications are included
