Quarterly Journal of the Chemical Society of London, Part 1, Pages 1033-2076 |
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Page 1033
... lactams By H. E. Hallam * and Christine M. Jones , Department of Chemistry , University College of Swansea A comprehensive concentration study has been made of the » ( N − H ) stretching frequencies of the thio- and seleno- lactams ...
... lactams By H. E. Hallam * and Christine M. Jones , Department of Chemistry , University College of Swansea A comprehensive concentration study has been made of the » ( N − H ) stretching frequencies of the thio- and seleno- lactams ...
Page 1035
... lactams ( 3395-3356 cm . - 1 ) is lower than that found for thiolactams ( 3430-3360 cm . - 1 ) and lactams ( 3470-3397 cm . - 1 ) . These results are consistent with there being an TABLE 1 v ( NH ) monomer Frequencies ( in cm . - 1 ) ...
... lactams ( 3395-3356 cm . - 1 ) is lower than that found for thiolactams ( 3430-3360 cm . - 1 ) and lactams ( 3470-3397 cm . - 1 ) . These results are consistent with there being an TABLE 1 v ( NH ) monomer Frequencies ( in cm . - 1 ) ...
Page 1038
... lactams is absent . This may be due either ( a ) to the absence of a v ( CO ) mode in thiolactams or ( b ) the formation of weak hydrogen - bonds by the thio- lactams . The low frequency of a weak hydrogen - bond will prevent the ...
... lactams is absent . This may be due either ( a ) to the absence of a v ( CO ) mode in thiolactams or ( b ) the formation of weak hydrogen - bonds by the thio- lactams . The low frequency of a weak hydrogen - bond will prevent the ...
Contents
Dolcetti G See Peloso A 1506 | 1031 |
Structures of cyclic amides Part III Thio and selenolactams | 1033 |
Equilibria in solutions which contain a metal ion and an aminoacid | 1039 |
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absorption acetaldehyde acetone acid adduct Amer anion aqueous atoms bands benzene bond bromine bromine trifluoride calculated carbon catalyst cation Chem Chemistry chloride cm.¹ co-ordination cobalt cobalt(II coefficients complexes compounds concentration configuration corresponding coupling constant crystals cyanide dehy gel dichloromethane dilute doublet electronic energy equation equilibrium constants ethanol ether experimental Figure five-co-ordinate fluorine formation frequencies halide heated hydrogen hydrogen cyanide hydrolysis i.r. spectrum Inorg interaction iodide iodobenzene isomers k₁ kcal lactams ligand magnetic measured metal methyl mixture mmoles mole mole-¹ molecular molecule molybdenum n.m.r. spectra nickel nickel(II nitric oxide nitrogen observed obtained octahedral orbitals oxygen parameters phosphine phosphorus Phys plexes PMe,Ph potassium prepared present proton reaction resonance room temperature sample shown shows similar sodium solid solution solvent species structure sulphur Table thallium thio thiocyanate thiocyanogen thiolactams titration trans values yellow