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E-raamat: Paramagnetic Complexes in High Resolution NMR Spectroscopy

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  • Formaat: 190 pages
  • Ilmumisaeg: 01-Jul-2015
  • Kirjastus: Nova Science Publishers Inc
  • ISBN-13: 9781634830010
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Paramagnetic Complexes in High Resolution NMR SpectroscopySuurem pilt
  • Formaat: 190 pages
  • Ilmumisaeg: 01-Jul-2015
  • Kirjastus: Nova Science Publishers Inc
  • ISBN-13: 9781634830010
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The monograph covers theoretical aspects of the method based on the analysis of NMR spectra transformed by electron-nuclear or hyperfine coupling, and provides examples of its practical application for the solution of different tasks related to structure and intramolecular dynamics of multi-electron systems. The fundamentals of NMR theory in paramagnetic systems were formulated by Blombergen, McConnell, Solomon, Berkheyn and other researchers. However, wide application of HFC specifics for the solution of diverse chemical tasks was triggered later, after the development of a method for analysis of NMR spectra transformed by additives of paramagnetic complexes. The book consists of three chapters. Chapter 1 discloses the fundamentals of high resolution NMR spectra transformed by hyperfine coupling. The two other chapters illustrate fruitfulness and prospects of the application of NMR phenomenon in paramagnetic systems for studying molecular structure. Examples of specific spectra, analyzed in the monograph, are selected in such a way that they could help a reader understand a circle of possible problems which are solved using peculiarities of the NMR phenomenon in paramagnetic systems. The same examples also illustrate the techniques which can be employed for obtaining information on the molecular structure of both ligands and complexes using their NMR spectra transformed by hyperfine coupling.
Preface vii
Chapter 1 Application of NMR Spectra of Paramagnetic Systems for Structural Studies of Organic Ligands
1(40)
1.1 Nature of Hyperfine Contact Coupling in Paramagnetic Complexes
2(12)
1.1.1 Complexes of First Transition Group Elements
2(8)
1.1.2 Complexes of Rare-Earth Elements
10(4)
1.2 Study of Spatial Structure of Organic Compounds
14(12)
1.2.1 Complexes of First Transition Group Elements
15(4)
1.2.2 Complexes of Rare-Earth Elements
19(7)
1.3 Problems of Hyperfine Coupling Theory and Relaxation Processes in Paramagnetic Complexes with Heterorganic Ligands
26(15)
Chapter 2 Method of Paramagnetic Additives
41(80)
2.1 Theory of the Method
43(8)
2.2 Paramagnetic Additives of Iron Group Elements
51(12)
2.2.1 1 - Methyl-2-Aminobenzimidazole
59(3)
2.2.2 1,1-Divinyl-2,2-Biimidazolyl
62(1)
2.3 Lanthanide Paramagnetic Additives
63(32)
2.3.1.1 Ethyl-2-Methylimidazole
63(2)
2.3.3 Vinyl Derivatives of Imidazole, Pyrazole, Triazole
65(11)
2.3.4 Vinyloxyphenylazomethines
76(2)
2.3.5 3- and 5-Substituted Flavones
78(7)
2.3.6 2-, 3-, 4-Pyridylcarbinol Vinyl Ethers
85(3)
2.3.7 2,5-Dimethyl-4-Methylene-1,3-Oxathiolane
88(1)
2.3.8 Configuration and Conformation of 8-(3,4-dihydropyranyl-2) Oxyquinoline Derivatives
89(4)
2.3.9 2H,6H-2,6-Dimethyl-4-Amino-1,3,5-Dithiazine and Its Derivatives
93(2)
2.4 Application of Paramagnetic Complexes for the NMR Spectra Analysis
95(26)
2.4.1 Experimental Procedures
107(5)
2.4.2 Experimental Data Analysis
112(9)
Chapter 3 Application of Complex Formation Process in Structural Studies
121(36)
3.1 Spatial Structure of 1-Vinylimidazole
121(5)
3.2 Complexing Ability and Structure of
126(6)
Si-Substituted Silatranes
126(6)
3.3 Structure of Methyl Thienyl Ketone Oxime Studied
132(3)
By Paramagnetic Additives Method
132(3)
3.4 Peculiarities of Molecular Structure of Nickel Paramagnetic Complexes with Nitroxyl Radicals
135(10)
3.5 Peculiarities of Intramolecular Exchange and Valence Tautomerism in Metal Semi-Quinolates
145(12)
Conclusion 157(2)
References 159(18)
Index 177
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