Download or read book Very Strong Hydrogen Bonding in Solutions of Alkali Metal Fluorides and Carboxylic Acids written by O. P. A. Hoyte and published by . This book was released on 1977 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Very Strong Hydrogen Bonding in Solutions of Alkali Metal Flourides and Carboxylic Acids written by Otho Parker Athelston Hoyte and published by . This book was released on 1977 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Very Strong Hydrogfen Bonding in Solutions of Alkali Metal Fluorides and Carboxylic Acids written by O. P. A. Hoyte and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NMR Studies of Strong Hydrogen Bond to Fluoride Ion written by Raveendran K. Kanippayoor and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Systems such as MF/diol (M = alkali metal) and }1F/carboxylic acid were subjected to IH, I9F and 13C nmr study to investigate the nature of the very strong H-bonding of fluoride ions with these systems. Evidence indicates a strong H-bond in diol-fluoride systems (~H ~ -(56) kJ mol-I) which is stronger than most 'typical' H-bonds (~H = -(12-40) kJ mol-I), but weaker than that reported for carboxylic acid-fluoride systems (~H ~ -(120) kJ mol-I). Approximate fluoride H-bonded shifts (o(OH)OHF) were evaluated for MF/diol systems from IH chemical shift measurements. No direct correlation was observed between I9F chemical shift and H-bond strength. Thermodynamic parameters were calculated from temperature dependent IH and 19F shifts. Preliminary studies of BUn 4NF-acetylacetone by I9F nmr were conducted at low temperatures and a possible Jmax (ca. 400 Hz) is reported for the fluoride ion H-bonded to acetylacetone. Highfield shift for non-protonated carbons and downfield shift for protonated carbons were observed in carboxylic acid/KF systems. Significant decreas$in I3C TI due to strong H-bonding to fluoride ions were also detected in both diol and carboxylic acid systems. Anomalous results were obtained, such as increasing NOE with increasing temperature in neat 1,2-ethanediol (values above the theoretical maximum of 1.988) and in 1,2-ethanediol/KF. The large 13C NOE's for carboxy carbons in neat carboxylic acids which are. further enhanced by the addition of KF are also unusual.
Download or read book Very Strong Hydrogen Bonds Formed Between Carboxylic Acids and Anions written by James H. Clarke and published by . This book was released on 1974 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Strong Hydrogen Bonding in Organic Synthesis written by Kwok-Hung So and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The preparation of phenacyl and para-phenylphenacyl esters, the reactions of carboxylic acids, phenols, 2-nitropropane and alcohols with alkyl halides in the presence of fluoride anion are described. The reactions are thought to be accelerated by the formation of hydrogen bonds between the fluoride anion and the organic electron acceptor. The fluoride ,carboxylic acids, fluoride-phenols and fluoride-2-nitropropane are better reaction systems than the fluoride-alcohol. The source of the fluoride anion and the choice of solvents are also discussed.
Download or read book Strong Hydrogen Bonding in Metal Fluoride Complexes written by Muhammad Arif and published by . This book was released on 1989 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quarterly Journal of the Chemical Society of London written by Chemical Society (Great Britain) and published by . This book was released on 1971 with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrogen Bonding Phase transfer Catalysis with Alkali Metal Fluorides written by Anna Chiara Vicini and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Society Reviews written by Chemical Society (Great Britain) and published by . This book was released on 1980 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Chemistry written by and published by . This book was released on 1980 with total page 992 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theses and Dissertations Accepted for the Degrees of M Phil and Ph D written by University of London and published by . This book was released on 1976 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Scientific Industrial Research written by and published by . This book was released on 1988 with total page 870 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inorganic Chemistry written by Therald Moeller and published by . This book was released on 1982-06-18 with total page 878 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents the entire inorganic field as a logical development of basic ideas, incorporating significant early contributions, factual data, and the resulting modern ideas involving the scope and significance of inorganic chemistry. Proceeds sensibly from the origins of the elements through atomic structure, molecular structure, bonding and properties related to bonding, and reactions considered by types, conditions, and mechanisms.
Download or read book Subjects of Dissertations Theses and Published Works Presented by Successful Candidates at Examinations for Higher Degrees written by University of London and published by . This book was released on 1979 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Main Group Chemistry written by A. G. Massey and published by . This book was released on 2000-12-27 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lately, there has been much interest in the chemistry of Main Group elements with novel compounds being synthesised both in academia and industry. This book examines their synthesis, structure and how they behave chemically. The second edition follows the same structure as the first except that the biochemistry section has been removed to allow for the inclusion of a wide range of new material. This includes: * complexation and the stabilization of unstable species; * new elements and isotopes; * discussion of, for example, pye-bonding in compounds of the heavier main group elements, electronegativity of F, bonding in sulfur and phosphorus oxo-anions; * examples of new compounds developed around traditional models; for example, compounds in which multiply-bonded C is replaced by Si and pentavalent organo-derivatives of Group 15 All other information is fully revised and updated in the light of more recent data. Where relevant, the author indicates where gaps exist in current knowledge and offers non-typical examples which are at the limits of current research. The new edition is aimed at Honors and postgraduate students as well as researchers interested in Main Group elements and their compounds. On the first edition - "This is a book I would recommend as background reading for undergraaduates and postgraduates" Education in Chemistry, Chemistry in Britain "This is a sound and sensible book, coherently produced and well written" The Times Higher Educational Supplement
Download or read book Comparative Inorganic Chemistry written by Bernard Moody and published by Elsevier. This book was released on 2013-10-22 with total page 577 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comparative Inorganic Chemistry, Third Edition focuses on the developments in comparative inorganic chemistry, including properties of elements and the structure of their atoms, electronic configuration of atoms of elements, and the electronic theory of valency. The manuscript first offers information on the development of fundamental ideas in 19th century chemistry, as well as purification and identification of substances in the laboratory; classical arguments for the existence of atoms and molecules; and electrolytes, ions, and electrons. The book also takes a look at the properties of elements and the structure of their atoms. The classification of elements in the 19th century, atomic nucleus, divisible atoms, nuclear reactions and fusions, and artificial radioactivity and nuclear transmutations are discussed. The book examines the electronic theory of valency and periodic classification, including basic assumptions of the electronic theory, hydration of ions, ionic bond and the formation of ions, and the development of the concept of valency. The manuscript also ponders on bonding and the structures displayed by elements and their compounds; oxidation, reduction, and electrochemical processes; and the principles on the extraction of elements. The publication is a dependable source of information for chemists and readers interested in inorganic chemistry.
