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Full-Text Articles in Physical Sciences and Mathematics
The Dipole Moments Of A Series Of N, N-Diphenylbenzamides, James William Cooke
The Dipole Moments Of A Series Of N, N-Diphenylbenzamides, James William Cooke
Master's Theses
In recent years amides have been used in synthetic fibers, plastics and in medicinal chemistry. Under standably, the literature contains many preparations and reactions of unsubstituted, monosubstituted and disubstituted amides, however, their structure has received very little attention. The information avail able on the amide group structure originates from studies made on the unsubstituted and mono substituted compounds. The phenomenon of association of the amides has received considerable attention.
Tetrazolium Salts, Andrew Garnett Richardson
Tetrazolium Salts, Andrew Garnett Richardson
Master's Theses
Tetrazolium salts, as the name indicates, are quartenary. Substitution is possible on positions 2, 3, and 5 of the ring as is shown in type formula (I). When these substituent groups are bifunctional ditetrazolium salts of types (II), (III), and (IV) result. Compounds bridged at both R' and R'' at the same time are theoretical possible, but no such cases have been reported, probably on account of the practical limitations of synthesis. The anion, which is indicated by X, may be halide, sulfate, acetate, picrate, succinate, thiocyanate, or practically any atom or group capable of existing as a negative ion.
Chelation Of The Transition Metal Ions With A Series Of Polyhodrozyamine Compounds, William Percy Moore
Chelation Of The Transition Metal Ions With A Series Of Polyhodrozyamine Compounds, William Percy Moore
Master's Theses
Chelation was reviewed with emphasis on the work done by contemporary workers.
The following polyhydroxyamine compounds were synthesized, purified and· analyzed:
1,2-bis[tris(hydroxymethyl)methylamino]ethane dihydrochloride
1,3-b1s[tris(hydroxymethyl)methylamino]propane dihydrochloride
1,3-b1s[tris(hydroxymethyl)methylamino]-2-propanone dihydrochloride
1,2,3-tris[tris(hydroxymethyl)methylamino)propane tri hydrochloride
The latter two compounds have not been reported in the literature.
Chelates were prepared by reacting the above compounds, and 1-3bis[tris(hydroxymethyl)methylamino]-2-propanol dihydrochloride ("disec") and the "disec" free base, with the ions of the first transition metals. Stability constants were obtained where appreciable coordination occurred before precipitation of the metallic ion took place . A list of the metal ions studied with one or more chelating agents follows: Cu+2, …