About: Halocarbon is a research topic. Over the lifetime, 176 publications have been published within this topic receiving 3883 citations. The topic is also known as: organohalide.
TL;DR: The crystal structures presented here prove how halogen bonds can occur in biological systems and provide a class of highly directional stabilizing contacts that can be exploited in the process of rational drug design.
Abstract: Halogen bonding has been extensively described in the context of a variety of self-assembled supramolecular systems and efficiently utilized in the rational design of materials with specific structural properties. However, it has so far received only little recognition for its possible role in the stabilization of small molecule–protein complexes. In this tutorial review, we provide a few examples of halogen bonds occurring between small halogen-substituted ligands and their biological substrates. Examples were drawn from a diverse set of compounds, ranging from chemical additives and possible environmental agents such as triclosan to pharmacologically active principles such as the volatile anesthetic halothane or HIV-1 reverse transcriptase inhibitors or a subset of non-steroidal anti-inflammatory drugs (NSAIDs) that are halogen-substituted. The crystal structures presented here, where iodine, bromine, or chlorine atoms function as halogen bonding donors and a variety of electron rich sites, such as oxygen, nitrogen and sulfur atoms, as well as aromatic π-electron systems, function as halogen bonding acceptors, prove how halogen bonds can occur in biological systems and provide a class of highly directional stabilizing contacts that can be exploited in the process of rational drug design.
TL;DR: In this article, rate constants and mechanisms for the gas phase reactions of atomic oxygen O(3P) with organic compounds having only saturated C-C bonds are compiled and critically evaluated, and error limits are assigned to all recommended values.
Abstract: Rate constants and mechanisms for the gas phase reactions of atomic oxygen O(3P) with organic compounds having only saturated C–C bonds are compiled and critically evaluated. Data are given for the alkanes, cycloalkanes, haloalkanes, oxygen and nitrogen containing organic compounds, and free radicals. In addition, data are given for some miscellaneous compounds containing boron, silicon, germane, and mercury. From a critical examination of the data, recommended values for rate constants are given over specified temperature intervals or at specified temperatures. Error limits are assigned to all recommended values.
TL;DR: In this article, the authors present a detailed overview of the advanced Oxidation process in the context of photo-electrochemical reactions and their application in the field of photoelectrochemicals.
Abstract: Introduction: Advanced Oxidation Processes. Mechanisms: eaq-, 102, .OH and Peroyxy Radicals. Sensitized Excitation. Semiconductor Promoted Photooxidation. Experimental Techniques. Inorganic Ions and Molecules: Water and Hydrogen Peroxide. Halide Ions. Nitrogen Compounds. Phosphorus Oxyanions. Sulfur Oxyanions and Sulfide. Heavy Metal Ions. Organo-Metallic Compounds. Hydrocarbon Derivatives: Aliphatic Compounds. Aromatic and Other Cyclic Compounds. Long-Chain Compounds. Photo-induced Nitrosation and Nitration. Halocarbons: Aliphatic Halocarbons. Aromatic and Other Cyclic Compounds. Organic Nitrogen Compounds: Triazines. Amines, Amides, and Carbamates. Nitrobenzene and Nitrophenols. Bromoxynil and Choroxynil. Thymine. Triclopyr. Fenarimol. Flavins. Catecholamines. Dyes. Polycyclic Aromatic Nitrogen Heterocycles. Organic Phosphorus Compounds: Homogenous Photolysis. Heterogenous Photodegradation. Organic Sulfur Compounds Natural and Waste Waters: Natural Transformations in Freshwater and Oceans. Treatment of Polluted Groundwater. Treatment of Waste Water. Photodynamic Sterilization. Concentrated Sunlight. Evaluation and Future Trends: Photodegradation Compared with Other Methods. Cost estimates, Energetics, and Conclusions. References Index THis TOC has 3 levels: Introduction Advanced Oxidation Processes Mechanisms: eaq-, 102, .OH and Peryoxy Radicals Sensitized Excitation Semiconductor-Promoted Photooxidation Primary Reaction Steps Kinetic Models Role of Oxygen Direct and Indirect Photodegradations Zeta Potentials and Surface Properties Catalyst Preparations Surface Density of OH Groups in TiO2 Particles Quantum Yields and Turnover Numbers Experimental Techniques Reactor Design Laser and Excimer Light Sources Light-Dark Cycling Concentrated Sunlight Photoelectrochemical Reactions Inorganic Ions and Molecules Water and Hydrogen Peroxide Halide Ions Nitrogen Compounds Phosphorus Oxyanions Sulfur Oxyanions and Sulfide Heavy Metal Ions Organo-Metallic Compounds Hydrocarbon Derivatives Aliphatic Compounds Homogenous Photolysis Heterogenous Photodegradation Aromatic and Other Cyclic Compounds Homogenous Photolysis Heterogenous Photodegradation Oil Spills Long-Chain Compounds Surfactants Lignin Sulfonates and Kraft Wastewater Phthalate Esters Polymers Photoinduced Nitrosation and Nitration Halocarbons Aliphatic Halocarbons Aromatic and Other Cyclic Halocarbons Haloaromatics Halogenophenols Polychlorinated Dioxins, Dibenzofurans, and Biphenyls Halocarbon Pesticides Organic Nitrogen Compounds s-Triazines Amines, Amides, and Carbamates Nitrobenzene and Nitrophenols Bromoxynil and Chloroxynil Thymine Triclopyr Fenarimol Flavins Catecholamines Dyes Azo Dyes Tannery Dyes Dyes in Municipal Wastewater Methyl Violet Methyl Viologen Polycyclic Aromatic Nitrogen Heterocycles Organic Phosphorus Compounds Homogenous Photolysis Heterogenous Photodegradation Organic Sulfur Compounds Natural and Waste Waters Natural Transformations in Freshwater and Oceans Treatment of Polluted Groundwater Treatment of Wastewater Photodynamic Sterilization Concentrated Sunlight Evaluation and Future Trends Photodegradation Compared with Other Methods Ozonation Biodegradation Radiolysis Ultrasonics Corona Discharge Electrochemical Oxidation Oxidation in Supercritical Water Cost Estimates, Energetics, and Conclusions Cost Estimates Energy Requirement Evaluation Future Trends References Index
TL;DR: In this paper, the ground electronic state of O(3P) atoms with unsaturated hydrocarbons was evaluated and conservative uncertainty limits assigned to the rate parameters of the reactions.
Abstract: Chemical kinetic data for reactions of O(3P) atoms with unsaturated hydrocarbons are compiled and critically evaluated. Specifically, the reactions considered include the interactions of the ground electronic state of oxygen atoms, O(3P), with alkenes, cycloalkenes, halogen substituted alkenes and ketenes, alkynes, halogen substituted alkynes, aromatic hydrocarbons, halogen substituted aromatic hydrocarbons and pyridine. All kinetic data considered were restricted to gas phase reactions. ‘‘Recommended’’ values of the rate parameters have been assessed and conservative uncertainty limits assigned to them.
TL;DR: In this paper, the authors investigated the potential of heterogeneous catalytic ozonation on the oxidation of aqueous halocarbon compounds and found that the presence of various oxides had a positive effect on the ozone of various contaminants ranging from a simple organic acid molecule, oxalic acid, to aromatic halocarbons.