## High resolution nuclear magnetic resonance spectroscopy. 2 |

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Page 168

0-28 (cycles

° The asymmetry of the curve about q> = 90° was attributed to approximations

involved in calculating the exchange integrals [Cal , CM]. Table 5.1 Vicinal H-H ...

0-28 (cycles

**sec1**) 0° g <p ^ 90° = 9-5 cos2«p - 0-28 (cycles**sec1**) 90° g <p g 180° The asymmetry of the curve about q> = 90° was attributed to approximations

involved in calculating the exchange integrals [Cal , CM]. Table 5.1 Vicinal H-H ...

Page 190

so that the contact term contributions to the gauche and trans coupling constants

are estimated to be 3-6 to 5-4 cycles

cycles

so that the contact term contributions to the gauche and trans coupling constants

are estimated to be 3-6 to 5-4 cycles

**sec1**19-3 to 29-4 cycles**sec-1**7-8 to 17-3cycles

**sec1**42-3 to 93-8 cycles**sec"1**. The separate values of J°gch' and J'TM"* ...Page 398

This assignment leads to the following set of coupling constants for the molecule /

AA. = JHH, ~ 4 cycles

JAX. = j£T = 34 cycles

This assignment leads to the following set of coupling constants for the molecule /

AA. = JHH, ~ 4 cycles

**sec1**7Xx' = /FF' = 37 cycles**sec-1**/AX = x 1 cycles**sec1**JAX. = j£T = 34 cycles

**sec-1**(more recent valuesll40) are 4-8, 36-4, ± 0-7 and + ...### What people are saying - Write a review

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### Contents

Introduction | 1 |

J Chem Phys 3 4 3 5 3 6 4 2 4 3 5 2 6 14 7 1 7 2 7 7 8 3 8 19 8 22 8 26 8 | 3 |

General Theory of Nuclear Magnetic Resonance | 10 |

Copyright | |

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AA'BB absorption bands applied atomic orbitals benzene calculated carbon Chem chemical shift chemical shift difference components compounds coupling constants cycles sec-1 diamagnetic dipole effect eigenfunctions eigenvalues electron energy levels exchange experimental fluorine given gives Gutowsky H resonance Hamiltonian hence hydrogen atoms hydrogen bonding hydrogen nuclei hydrogen resonance interaction line width linear liquid magnetic field magnetic nuclei magnetically equivalent magnitude matrix elements Mc sec-1 measured methane method methyl molecular orbital molecule multiplet non-equivalent nuclear magnetic resonance observed obtained oscillator paramagnetic parameters Phys Pople radiofrequency radiofrequency field receiver coil reference relative intensities relative signs relaxation resonance spectrum ring current rotation sample sec1 Section secular equation shielding coefficient shielding constant shown in Fig sideband signal solution solvent spectra spectrometer spin functions spin system spin-lattice relaxation substituted susceptibility symmetry Table temperature tion transition energies valence bond values vector wavefunctions zero