Download or read book Synthesis and Characterization of Iron Nitrosyl Thiolate Complexes Studies of Nitrite Reduction by Iron Thiolate Complexes written by 歐翰璋 and published by . This book was released on 2017 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Syntheses of Iron and Vanadium Nitrosyl Thiolate Complexes Via the Reduction of Nitrate Nitrite written by 郭晉廷 and published by . This book was released on 2012 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies of Nitrite Reduction to Nitric Oxide by Vanadium and Iron Thiolate Complexes written by 吳宗翰 and published by . This book was released on 2017 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Syntheses and Characterization of Iron Thiolate Complexes the Isolation of an Iron Azide Complex written by 陳南傑 and published by . This book was released on 2011 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book I The Synthesis Structure and Physical Properties of an Unusual Nitrosyl Iron Thiolate Complex II The Crystal and Molecular Structure of Mo CNHC CH subscript 3 subscript 3 subscript 2 CNC CH subscript 3 subscript 3 subscript 4 subscript 2 ZnBr subscript 4 a Complex Containing the Novel Ligand CH subscript 3 subscript 3 CNH C C NHC CH subscript 3 subscript 3 III Studies of the Reduction Reaction of Pt CNC CH subscript 3 subscript 3 subscript 4 PF subscript 6 2 written by Laima Maria Baltusis and published by . This book was released on 1979 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Properties Reactivities and Synthesis of Anionic Iron thiolate selenate Complexes written by Wen-Feng Liaw and published by . This book was released on 1989 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis Reactivity of Iron II Pyridinediimine Complexes for the Reduction of Nitrite written by Yubin Kwon and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The activation of small molecules has been studied by the scientific field for many decades as it plays a key role in nature such as photosynthesis and respiration. Many of these reactions are catalyzed by metalloenzymes in nature where the transfer of electrons and protons are coupled for the reaction to move forward. Noncovalent interactions in the secondary coordination sphere of metalloenzymes play an important role in determining the activity and selectivity. Hydrogen bonds are the most common noncovalent interactions that metalloenzymes utilize to control the reactivity in the secondary coordination sphere. Therefore, it is important to develop compounds and catalysts that can move both protons and electrons. Recent studies have been done by several groups on the mechanism of nitrite reduction. Based on those findings, we developed a series of iron (II) pyridinediimine (PDI) complexes that contain pendant bases, with varying pKa values, located in the secondary coordination sphere. These ligands were synthesized, coordinated to iron (II) and reduced under carbon monoxide (CO) to store electrons within the ligand scaffold. These reduced complexes were then protonated to form hydrogen bonds and fine tune the reactivity. These PDI complexes that are capable of storing both electrons and protons were investigated to functionally mimic the metalloenzyme nitrite reductase. To date, the mechanism of nitrite reduction remains unknown. In an attempt to determine how nitrite binds to the metal of our PDI complex, we synthesized a dinitrosyl iron complex. The synthesis of this complex should help to determine the mechanism of nitrite reduction.
Download or read book Spectroscopic and DFT Studies of Thiol and Olefin Coordinated Non heme Iron Dinitrosyl Complexes written by Miguel Angel Camacho Fernandez and published by . This book was released on 2010 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Recent developments involving the physiological implications of nitric oxide have spurred an intense interest in transition metal nitrosyl complexes, especially those that mimic the structures of biologically active metal nitrosyl complexes. In order to get insights on the electronic configuration, molecular orbital's interaction, and explain spectroscopic (NMR, EPR, and IR) observations, Density Functional Theory calculations were carried out on three series of metal nitrosyl complexes, Fe(NO)2 (P(OCH3)3)[eta]2-TCNE, [Fe2([mu]-RS)2(NO)4], and [Fe(NO)2(Im-H)]4 . The unusually high rotation barrier observed by NMR was explained through fragment analysis of Fe(NO)2 and TCNE. In addition, the difference of the g values between the reduced form of Roussin's red Esters and the typical dinitrosyl iron complexes is explained, for the first time, by of the difference in unpaired electron distributions between the two types of complexes, which provides the theoretical basis for the use of g value as a spectroscopic tool to differentiate these biologically active complexes.
Download or read book Book of Abstracts written by American Chemical Society. Meeting and published by . This book was released on 1986 with total page 1350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bioinspired Synthesis and Reactivity Studies of Nitric Oxide Iron Complexes written by Jennifer Hess and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The significant role that nitric oxide plays in human physiology is linked to the ability of NO to bind to iron forming mono-nitrosyl iron complexes. Protein-bound and low-molecular-weight dinitrosyl iron complexes (DNICs) are known to form in excess NO. Studies of such biological DNICs have relied on their paramagnetism and characteristic EPR signal of g value of 2.03. It has been suggested that DNICs act in vivo as NO storage (when protein-bound) and transfer agents (when released by, for example, free cysteine). Biological DNICs, mainly resulting from iron-sulfur cluster degradation, are difficult to extract and isolate, thereby preventing their full characterization. Thus, development of synthetic DNICs is a promising approach to model and better understand the formation and function of biological DNICs, the scope of donor ligands that might coexist with Fe(NO)2 units, the redox levels of bio-DNICs, and establish other spectroscopic techniques appropriate for characterization. A series of N-heterocyclic carbene (NHC) and imidazole (Imid) complexes has been characterized as mimics of histidine-containing DNICs. The pseudo-tetrahedral L2Fe(NO)2 complexes have NO stretching frequencies and redox potentials that suggest the NHCs are slightly better donors than Imids, however the two types of ligands have similar steric properties. Both the EPR-active, {Fe(NO)2}9 and the EPR-silent, {Fe(NO)2}10 states can be accessed and stabilized by the NHC. Nitric oxide transfer studies have shown that only the {Fe(NO)2}9 complexes are capable of transferring NO to a suitable NO trapping agent. Deprotonation of the distal nitrogen functionality in the imidazolate ligands of [(Imidazole)2Fe(NO)2]- leads to aggregation forming molecular squares of {Fe(NO)2}9 units bridged by the imidazolates. These interesting tetrameric complexes are examined by X-ray diffraction, EPR, and Mössbauer studies. The paramagnetic tetrameric complexes have multiple redox events observed by cyclic voltammetry. Mössbauer spectral data of the tetrameric complexes are compared with Mössbauer data obtained for a series of NHC-containing DNICs. Iron and cobalt-containing mononitrosyl N2S2 model complexes of the nitrile hydratase enzyme active site demonstrate sulfur-based reactivity resulting in the formation of polymetallic complexes. In all cases, shifts in the nitrosyl stretching frequencies demonstrate substantial transfer of electron density from the (NO)M(N2S2) moiety to the metal-acceptor site.
Download or read book Synthesis and Characterization of Nickel Thiolate Complexes for Photocatalytic Hydrogen Evolution written by 朱哲民 and published by . This book was released on 2017 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of Iron Dinitrosyl Chelate Complexes written by Phuong-Mai Nguyen and published by . This book was released on 2002 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of Metal Thiolate Complexes and Their Oxidized Species written by Shuji Kimura and published by . This book was released on 2000 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comprehensive Dissertation Index written by and published by . This book was released on 1989 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrosyl Complexes in Inorganic Chemistry Biochemistry and Medicine II written by D. Michael P. Mingos and published by Springer. This book was released on 2014-06-19 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Structure and Bonding publishes critical reviews on topics of research concerned with chemical structure and bonding. The scope of the series spans the entire Periodic Table and addresses structure and bonding issues associated with all of the elements. It also focuses attention on new and developing areas of modern structural and theoretical chemistry such as nanostructures, molecular electronics, designed molecular solids, surfaces, metal clusters and supramolecular structures. Physical and spectroscopic techniques used to determine, examine and model structures fall within the purview of Structure and Bonding to the extent that the focus is on the scientific results obtained and not on specialist information concerning the techniques themselves. Issues associated with the development of bonding models and generalizations that illuminate the reactivity pathways and rates of chemical processes are also relevant. The individual volumes in the series are thematic. The goal of each volume is to give the reader, whether at a university or in industry, a comprehensive overview of an area where new insights are emerging that are of interest to a larger scientific audience. Thus each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years should be presented using selected examples to illustrate the principles discussed. A description of the physical basis of the experimental techniques that have been used to provide the primary data may also be appropriate, if it has not been covered in detail elsewhere. The coverage need not be exhaustive in data, but should rather be conceptual, concentrating on the new principles being developed that will allow the reader, who is not a specialist in the area covered, to understand the data presented. Discussion of possible future research directions in the area is welcomed. Review articles for the individual volumes are invited by the volume editors. Readership: research scientists at universities or in industry, graduate students Special offer for all customers who have a standing order to the print version of Structure and Bonding, we offer free access to the electronic volumes of the Series published in the current year via SpringerLink.
Download or read book Radicals for Life written by Ernst van Faassen and published by Elsevier. This book was released on 2011-10-13 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radicals for Life: the Various Forms of Nitric Oxide provides an up-to-date overview of the role of nitrosocompounds and nitrosyl-iron complexes in physiology. Nitrosocompounds can be considered as stabilised forms of nitric oxide, one of the most important regulatory molecules in physiology today. Many nitrosocompounds share some of the physiological functions of nitric oxide, and may be formed inside living organisms. This is the first book to be published that is dedicated to the role of such nitrosocompounds in physiology, with particular emphasis on the nitrosocompounds that are endogenously formed in higher organisms and humans. Points of discussion include: physical and chemical properties of the compounds, the main chemical pathways in vivo, as well as the physiological effects that have been recognised to date. Each of the nineteen chapters is written by distinguished specialists in the field, well known for their original and important contributions to the subject. Also included are results from a wide range of studies in vitro, in cell cultures, animal models and human volunteers. Examples of alternative forms of nitric oxide, with special emphasis on their protective role against widespread human diseases like atherosclerosis, Alzheimer's disease, diabetes, sexual dysfunction, and renal insufficiency to stroke and ischemia are also included. First monograph to consider and provide an overview of endogenous nitrosocompounds and nitrosyl-iron complexes Extensive bibliographic references, written by specialists of human physiology Providing high scientific quality with a focus on implications for human diseases
Download or read book Comprehensive Dissertation Index Chemistry P Z written by and published by . This book was released on 1984 with total page 844 pages. Available in PDF, EPUB and Kindle. Book excerpt:
