Fluorine-19 nuclear magnetic resonance spectroscopy : (1979 - 1981) PDF Download
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Author:
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ISBN: 9780125053143
Category :
Languages : en
Pages :
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Author:
Publisher:
ISBN: 9780125053143
Category :
Languages : en
Pages :
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Author: Harold G. Lee
Publisher:
ISBN:
Category :
Languages : en
Pages : 35
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A detailed investigation of the reaction of a series of pyridines with titanium tetrafluoride has been carried out with high-resolution fluorine-19 nuclear magnetic resonance spectroscopy. Instead of the formation of only simple diadducts a mixture of products is found in the solvent acetonitrile. The main species are TiF4 - 2D, TiF3 - 3D(+) and TiF5 - D( - ). An extensive series of TiF5 - d( - ) complex ions is studied by (19)F nmr. Linear correlations of the chemical shifts of the fluorines in TiF4 - 2D and TiF5 - D( - ) complexes are found with the pKa values of the substituted pyridines. Some complexes of TiF4 with bidentate ligands are reported as well as some products with sulfur containing ligands. Fluorine-19 nmr data are also given for some GeF4 - 2D adducts where D represents some substituted pyridine 1-oxides. Geometrical isomers were found with GeF4 - 2D compounds and both first and second order nmr spectra were measured. (Modified author abstract).
Author: Harris Daniel Plant
Publisher:
ISBN:
Category : Fluorine
Languages : en
Pages : 82
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Author: W. R. Dolbier
Publisher: John Wiley & Sons
ISBN: 0470483393
Category : Science
Languages : en
Pages : 272
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AN UNPARALLELED ONE-STOP GUIDE TO FLUORINE NMR Guide to Fluorine NMR for Organic Chemists provides a unique single source on both fluorine NMR and the impact of fluorine substituents on proton and carbon NMR spectra. Helping working chemists overcome the challenges associated with the synthetic methodologies of fluorinated compounds, this guide enables the effective use of these increasingly popular spectroscopic techniques to accurately characterize compounds that contain fluorine. Following a thorough introduction of fluorinated compounds, chapters in the text cover: An overview of fluorine NMR The single fluorine substituent The CF2 group The trifluoromethyl group More heavily fluorinated compounds Compounds and substituents with fluorine directly bound to heteroatoms With unparalleled depth and completeness, the coverage ranges from those compounds containing only a few fluorinated substituents, typically employed in pharmaceutical and agricultural applications, to more heavily fluorinated compounds. Featuring NMR data for more than 1,000 specific compunds and including more than 100 exemplary spectra, Guide to Fluorine NMR for Organic Chemists gives the working chemist and advanced student an essential tool for understanding cutting-edge NMR techniques and interpreting the resulting spectroscopic data.
Author: William R. Dolbier, Jr.
Publisher: John Wiley & Sons
ISBN: 111883108X
Category : Science
Languages : en
Pages : 366
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Book Description
Following its well-received predecessor, this book offers an essential guide to chemists for understanding fluorine in spectroscopy. With over 1000 compounds and 100 spectra, the second edition adds new data – featuring fluorine effects on nitrogen NMR, chemical shifts, and coupling constants. • Explains how to successfully incorporate fluorine into target molecules and utilize fluorine substituents to structurally characterize organic compounds • Includes new data on nitrogen NMR, focusing on N-15, to portray the influence of fluorine upon nitrogen NMR chemical shifts and coupling constants • Expands on each chapter from the first edition with additional data and updated discussion from recent findings • "The flawless ordering of material covered in this stand-alone volume is such that information can be found very easily." – Angewandte Chemie review of the first edition, 2010
Author: E.F. MOONEY
Publisher:
ISBN:
Category : Fluorine
Languages : en
Pages : 95
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Author: Neville BODEN
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Author: Syod Calab Abbas Rizvi
Publisher:
ISBN:
Category : Nuclear magnetic resonance
Languages : en
Pages : 190
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Author: Alfred Staffa
Publisher:
ISBN:
Category : Fluorine
Languages : en
Pages : 294
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Author: Claire Bernadette Conboy
Publisher:
ISBN:
Category :
Languages : en
Pages : 628
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