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Covalent Organic Frameworks : Chemistry, Materials and Applications
A comprehensive introduction to a groundbreaking polymer class Covalent Organic Frameworks (COFs) are materials that form two- or three-dimensional porous crystalline structures held together by strong covalent bonds.First described only in 2005, COFs have subsequently exploded as a field of study, with recent progress enormously enhancing scientific and industrial capacity for designing these organic materials by means of one-pot direct polymerization.The flexibility and predictability of these structures is part of what has given them applications in semiconductor construction, catalysis, energy storage, and more.Covalent Organic Frameworks: Chemistry, Materials, and Applications (2V set) provides a unique, comprehensive introduction to COFs and their chemistry, materials, and applications.It outlines the fundamentals of COF design, synthesis, and applications, offering a broad overview of both the origins of this thriving field and its many more recent developments.It equips readers with the tools to tailor COF design and production to a limitless range of potential scientific and industrial needs.Covalent Organic Frameworks readers will also find: Detailed treatment of design, synthesis, and computational approaches for a variety of specific COFsUnique comprehensive approach covers all possible reader needs in two accessible volumesDiscussion of connections between COF polymer chemistry and other fields including organic chemistry, computational chemistry, photochemistry, and more Covalent Organic Frameworks is a useful reference for organic chemists, materials scientists, polymer chemists, structural chemists, and more.
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Non-covalent Interactions in Coordination and Organometallic Chemistry
Non-covalent interactions in coordination and organometallic compounds (hydrogen, halogen, chalcogen, pnictogen, tetrel, and semi-coordination bonds; agosic and anagosic interactions; stacking, anion-/cation-Ï€ interactions; metallophilic interactions, etc.) are topical in modern chemistry, materials science, crystal engineering, and related fields of knowledge. Both experimental and theoretical methods are widely used for investigations of the nature and various properties of such weak contacts in gas, liquid, and solid states. Non-covalent interactions could be the driving force to design smart materials with valuable redox, electronic, mechanical, magnetic, and optical properties, which is promising for the manufacture of LEDs, photovoltaic cells of solar power plants, porous structures, sensors, battery cells, and liquid crystals.This Special Issue highlights and presents an overview of modern trends in non-covalent interactions in coordination and organometallic compounds, and bringing various different types to the attention of the scientific community.
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Playful Mindfulness : a joyful journey to everyday confidence, calm, and connection
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Entertaining Lives
Nancy Astor and her niece Nancy Lancaster were two of the great hostesses of the twentieth century, entertaining at a pitch perfect level of luxury, comfort and elegance.The food they served was always delicious, and the discovery of Nancy Astor's privately bound cookbook containing the recipes from the Langhorne family house, Mirador in West Virginia, is published for the first time.Over 70 recipes that were regularly 'mixed in with' classic French and English cuisine, are an ode to the flavours of the South; that conjured up mealtimes imbued with wit and laughter, tears and tantrums,arguments and reconciliations and were the thread that held the family together.
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What is covalent development?
Covalent development is a term used in the context of software development to describe a collaborative approach to building and maintaining software. It involves multiple developers working together on the same codebase, using version control systems to manage changes and updates. Covalent development emphasizes communication, teamwork, and shared responsibility for the code, leading to a more efficient and cohesive development process. This approach allows for greater flexibility and adaptability in responding to changes and challenges in the development process.
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What are covalent bonds?
Covalent bonds are a type of chemical bond formed between two atoms when they share one or more pairs of electrons. This sharing of electrons allows both atoms to achieve a more stable electron configuration, typically by filling their outermost energy levels. Covalent bonds are typically found in molecules and are responsible for holding the atoms together to form the structure of the molecule. These bonds can be either polar, where the shared electrons are not equally distributed between the atoms, or nonpolar, where the shared electrons are equally distributed.
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What is a covalent bond?
A covalent bond is a type of chemical bond that involves the sharing of electron pairs between atoms. This sharing of electrons allows each atom to achieve a more stable electron configuration, typically by filling their outermost energy level. Covalent bonds are typically found in molecules and are stronger than other types of chemical bonds, such as ionic bonds. The number of shared electrons can vary, leading to different types of covalent bonds, such as single, double, or triple bonds.
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Can you explain the covalent bond?
A covalent bond is a type of chemical bond that involves the sharing of electron pairs between atoms. This sharing of electrons allows each atom to achieve a full outer electron shell, making the atoms more stable. Covalent bonds are typically formed between nonmetal atoms, and the strength of the bond is determined by the number of shared electrons and the distance between the nuclei of the atoms. Covalent bonds can be either polar or nonpolar, depending on the electronegativity difference between the atoms involved.
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Veranda Entertaining
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Entertaining Beautifully
Aerin is a lifestyle legend. From an early age, she learned from her grandmother, Estee Lauder, that any occasion can be beautiful if you take the time.In the pages of this stunning book, Aerin weaves a spell as she shares memories of beloved childhood traditions as well as those she has created with family and friends using her own unique blend of luxury and ease.For the first time, Aerin also reveals how she thinks about hosting and how she sets the most gorgeous and inviting tables so that every gathering is unforgettable. Organized by season, this book encompasses more than twenty celebrations, from a spring floral dinner or a lobster-roll picnic on a boat to Thanksgiving leftovers in a log cabin and a white winter Champagne party in the city.Mini-chapters on stylish family and friends like her mother, Jo Carole Lauder; Daniel Romualdez; Caroline Sieber von Westenholz; and Maria Hummer-Tuttle reveal Aerin's own entertaining inspirations, as does an Homage to Estee chapter about her legendary soirees.Aerin holds back none of her secrets, her tips, and her imaginative ideas in this unparalleled, lavishly illustrated, and irresistible volume.
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Seven Lively Suspects
It's a baking hot British summer, and the sleepy town of Market Foxleigh is staging a crime writing festival... with the three Dahlias as guests of honour. After all, not only have Rosalind King, Caro Hooper and Posy Starling each played fictional detective Dahlia Lively on screen, but they're also making a name for themselves solving real-life murders too. The Dahlias are anticipating a weekend of cream teas, awards dinners and warm white wine... but before long they're sleuthing together once again - this time helping a true crime podcast investigate a local cold case with a personal connection for one of the Dahlias. It's been five years since Dahlia Lively fan Scott Baker was arrested for a murder that had eerie echoes of one of Dahlia's fictional cases.It seemed like an open and shut case at the time, but the podcast team are convinced that the police got the wrong man. Can the three Dahlias help prove them right - and find the real killer?Praise for Katy Watson:'An absolute treat of a read with all the ingredients of a vintage murder mystery: a country house, mysterious dead bodies and three actresses all keen to catch the killer.Perfect weekend reading!' Janice Hallett, author of The Appeal'Celebrates and gently satirises Golden Age crime novels in a hugely entertaining country house mystery' The Times'Dame Agatha would approve' Daily Mail'A wonderful celebration of Golden Age crime. . . a read you can sink into, just like the perfect country house weekend.You will definitely love Dahlia in all her guises by the end' S.J.Bennett, author of The Windsor Knot'I loved it - witty, engaging and hugely enjoyable.A must for fans of classic mysteries' Frances Brody'An affectionate homage to the Golden Age of Detective Fiction and a wry nod to our continuing fascination with it.Great fun. Warm, ingenious and. . . lively!' L C Tyler'A sprightly offering. . . a pleasant summer read' The Critic'A pleasure to read from beginning to end' Shots'A fun, 1930s style murder-mystery, which makes for perfect holiday reading' Woman's Weekly'Perfect Holiday Read' Woman & Home'Smartly executed with wit and a cunning plot' Peterborough Telegraph'A cosy whodunnit told with modern flair' Yours
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What does "covalent" mean in chemistry?
In chemistry, "covalent" refers to a type of chemical bond that involves the sharing of electron pairs between atoms. This type of bond is formed between nonmetal atoms and is characterized by the atoms sharing electrons in order to achieve a stable electron configuration. Covalent bonds are typically strong and result in the formation of molecules.
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Is covalent bonding a difficult topic?
Covalent bonding can be a challenging topic for some students due to its abstract nature and the need to understand concepts such as electron sharing and molecular geometry. However, with proper explanation and practice, students can grasp the fundamentals of covalent bonding. It is important to break down the concepts into simpler parts and provide real-world examples to help students understand the concept better. With patience and practice, students can overcome the difficulties associated with covalent bonding.
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What is a non-covalent bond?
A non-covalent bond is a type of chemical bond that does not involve the sharing of electrons between atoms. Instead, non-covalent bonds are formed through electrostatic interactions, such as hydrogen bonding, van der Waals forces, and ion-dipole interactions. These bonds are generally weaker than covalent bonds and can be easily broken under certain conditions.
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What is a nonpolar covalent bond?
A nonpolar covalent bond is a type of chemical bond where two atoms share electrons equally. This occurs when the difference in electronegativity between the two atoms is very small or nonexistent. As a result, there is no separation of charge within the bond, making it nonpolar. Nonpolar covalent bonds are typically found between atoms of the same element or between atoms with similar electronegativities.
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