G. Maclean

Bio: G. Maclean is an academic researcher. The author has contributed to research in topics: Tetrasulfur tetranitride & Triphenylphosphine. The author has an hindex of 3, co-authored 4 publications receiving 62 citations.

Central Role of the S3N3- and S4N5- Ions in the Deprotonation of Tetrasulfur Tetraimide and in the Reductive or Nucleophilic Degradation of Tetrasulfur Tetranitride

Abstract: K+S3N< has been isolated and characterized as the major product from the deprotonation of S4N4H4 with potassium hydride. Salts of the S3N3- ions are also formed as the final products in the chemical reduction of S4N4 with potassium metal in 1,2-dimethoxyethane and in the electrochemical reduction of S4N4 in ethanol. The formation of S3N3- in these reduction processes supports an earlier proposal that the initially formed radical anion S4N4-. decomposes by an intramolecular bond rupture. S4N4 reacts with liquid ammonia or secondary amines to give salts of the SANS- ion but in the presence of sodium amide an S3N3- salt is the major product. The reaction of S4N4 with potassium cyanide in ethanol or dimethylformamide also produces K+S4N<, in addition to potassium thiocyanate are critically evaluated in the light of these results. Previous claims of sulfur-nitrogen anions derived from S4N4

Aminophosphines: their chemistry and role as ligands and synthons

Abstract: In recent years, research in organophosphorus chemistry has mainly focused in designing newer and better phosphorus ligands for synthesizing novel metal complexes with improved catalytic activities. Aminophosphines [tricoordinate phosphorus(III)–nitrogen systems] are considered as versatile compounds owing to the presence of nitrogen centres which, in principle, can influence additional reactivity features. They are quite sensitive to air and moisture due to the presence of polar PN bond(s). In spite of this, research in aminophosphine chemistry is gaining momentum day-by-day and this is due mainly to one reason: their rich behaviour as ligands in metal complex chemistry and subsequently in catalysis. Their role as synthons in inorganic heterocyclic chemistry has also helped produce new types of heterocycles. In this paper, the chemistry of simple acyclic aminophosphines (synthesis, characterization, reactivity and applications) is covered and particular focus is given to their ability to form chalcogenides along with their role played as ligands in coordination chemistry and as synthons in inorganic heterocyclic chemistry. Copyright © 2009 John Wiley & Sons, Ltd.