NMR Spectroscopy Using Liquid Crystal Solvents by J.W. Emsley and J. C. Lindon (Auth.) PDF

By J.W. Emsley and J. C. Lindon (Auth.)

ISBN-10: 0080199194

ISBN-13: 9780080199191

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The more commonly studied case has the quadrupole term much smaller than the zeeman. 25) simplifies to, in frequency units θ l ίΖΖ ^0 = Ï l ^ (^zi^i - V 1 ! (21. 26) and to define a quantity q. as = e Q. V. 8). The isotropic average of q R αβ is zero hence

I. + I. I. )} xjzz iz jz 4 i+ ji- j + (2. 22) is used in many applications of NMR solutes in nematic solutions, but also because the theory has been developed independently by different groups the trivial replacement of DÎ. by D. 1JZZ has often been made, and to simplify discussion lat(sr we will adopt JD!. r 1JZZ this scheme throughout this volume. γ-h T) — ^jaB J 8π2 ija ^ncfi — ij 3 Ä > αβ (2. 9) the relationship between D. 1JZZ and D.. Λ in a molecule-fixed axis system can be determined.

2s φ W2 + Wt ( - a ^ + /2a ^ 5. Ιεφ - 2s-φ -W2 - Wx ( a b 6. 2s φ Wx - W2 (a 2 b 2 - /2 & 1 b 2 - Λ&£>χ)2 7. ls-φ - s-φ φΑ + φ Β - R - W2 ( / 2bi + 8. 2s-φ - s - φ φ Α + φ Β - R + „2 (bl - /2b2)2 9. DBB - ! J AB AB = VA - VB 1B ΑΒ°ΒΒ ABJAB + 6 ABJAB + Ά^ + - /2a 2 b 2 ) 2 "ÎVAB + /2a 2 b 2 )2 47 Spin Systems with Analytical Solutions -/2 (JAB + V •i — 2 - ( b~ ax + a 2 = 1 ; ^ * 6AB + fDBB - DAB + IJAB " * V -/2(JAB = 2 ; + V 2 : 2 + b\ = l (6 AB + ! 4. AB3 This spin system must have permutation symmetry isomorphous with the point group CL, hence the wavefunctions can be classified according to whether they are of species A or E.

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NMR Spectroscopy Using Liquid Crystal Solvents by J.W. Emsley and J. C. Lindon (Auth.)

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