Quarterly Journal of the Chemical Society of London, Issue 1, Pages 1-776 |
From inside the book
Results 1-3 of 84
Page 321
... shift for this proton . The small feld shifts of the methyl protons ( VI ) reflect the increas- ordered solute structure as the aggregates are formed . Chemical shift behaviour of the B - lactam protons is not FIGURE 2 . Chemical shift ...
... shift for this proton . The small feld shifts of the methyl protons ( VI ) reflect the increas- ordered solute structure as the aggregates are formed . Chemical shift behaviour of the B - lactam protons is not FIGURE 2 . Chemical shift ...
Page 364
... shift values , on off- centre double resonance , or on deuteriation studies . For larger molecules , a full assignment is often extremely difficult . H OH L 3 ( I ) We have reported that shifts induced in the 1H n.m.r. spectrum of ...
... shift values , on off- centre double resonance , or on deuteriation studies . For larger molecules , a full assignment is often extremely difficult . H OH L 3 ( I ) We have reported that shifts induced in the 1H n.m.r. spectrum of ...
Page 453
... shift of one of the B - methyl doublets in the exo - isomer persists under all conditions examined . These included lowering the temperature to -50 ° ( shift = + 0 · 89 ; signals became very broad below -50 ° ) , varying the ...
... shift of one of the B - methyl doublets in the exo - isomer persists under all conditions examined . These included lowering the temperature to -50 ° ( shift = + 0 · 89 ; signals became very broad below -50 ° ) , varying the ...
Contents
Page | 1 |
Electrochemical Indications of New Oxidation States in Transitionmetal Dicarbollide Complexes | 8 |
Synthesis of a 1026Pyridinophane by U K GEORGI and J RÉTEY | 32 |
15 other sections not shown
Other editions - View all
Common terms and phrases
acetate acid addition alcohol Amer analysis appears aromatic assigned atoms band bond calculated carbon carbonyl Chem Chemical Chemistry chloride chromatography co-ordination Comm complexes compounds concentration configuration confirmed consistent constants containing corresponding coupling Crystal Department of Chemistry derivatives determined effect electron ester ether evidence expected experiments Figure followed formation formed gave give hydrogen indicate intermediate involving isolated ligand mass measured mechanism metal method methyl mixture molecular molecule n.m.r. spectrum nitrogen observed obtained occurs oxidation oxygen peak position possible prepared presence protons radical ratio reaction rearrangement Received recently reduction relative reported Research resonance respectively ring Scheme shift shown shows signals similar solution solvent space group spectra spectrum structure studies substituted suggested Summary synthesis Table temperature Tetrahedron Letters thank tion University values X-ray yield