Physical and Physicochemical Aids in Characterization and in Determination of StructureRobert Stuart Tipson, William Werner Zorbach Wiley-Interscience, 1973 - 674 pages |
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Page 476
... structures of several natural products . 95,96 There is another way in which the Patterson function . may be used . Sometimes , from considerations of crystal packing and hydrogen bonding , a model can be proposed for the structure ...
... structures of several natural products . 95,96 There is another way in which the Patterson function . may be used . Sometimes , from considerations of crystal packing and hydrogen bonding , a model can be proposed for the structure ...
Page 493
... structures by the heavy - atom technique , but , for the foregoing example , this would have entailed several structure - factor - Fourier cycles , because of the small value of o2 , as shown in Table XVI ( see p . 481 ) and the problem ...
... structures by the heavy - atom technique , but , for the foregoing example , this would have entailed several structure - factor - Fourier cycles , because of the small value of o2 , as shown in Table XVI ( see p . 481 ) and the problem ...
Page 502
... structure is visible in the initial E map . All of the high peaks that define a reasonable geometry are then selected for a calculation of the structure factor , and the phases ... STRUCTURE 1. Least - squares 502 X - RAY CRYSTAL STRUCTURES.
... structure is visible in the initial E map . All of the high peaks that define a reasonable geometry are then selected for a calculation of the structure factor , and the phases ... STRUCTURE 1. Least - squares 502 X - RAY CRYSTAL STRUCTURES.
Contents
I | 3 |
III | 26 |
By Adrien Albert John Curtin School of Medical | 47 |
Copyright | |
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5'-phosphate 9-methyl absorption Acta Crystallogr adenine adenosine Amer amino group ammonium angle anomeric proton anomers aqueous assigned bands base bond carbon cation Chem chemical shift chromatography column compounds conformation crystal curve Cytidine cytosine D. J. Brown deuterium doublet effect elution exocyclic guanine Guanosine heterocyclic HOCH2 hydroxyl hypoxanthine imidazole infrared intensity ionization J. J. Fox mass spectra method methyl group methyl sulfoxide-d6 Methylamino mixture molecule neutral species NH2 NH2 nitrogen atom nucleic acid nucleic acid components nucleo nucleosides Nucleosides and Nucleotides observed obtained p.m.r. spectroscopy p.m.r. spectrum Patterson map peak phate phosphate pKa values positive Cotton-effect proton protons on C-2 purine purine nucleosides pyridine pyrimidine pyrimidine nucleosides R. K. Robins resonance RF values ring sample separation singlet solution solvent Spectra of Purines structure substituents Table technique Thiol thymine tion trimethylsilyl ultraviolet Ultraviolet Spectra uracil uridine wavelength Wavenumber