Metal complexes of an N-selenocarbamoyl benzamidine

Gold(iii) compounds containing a chelating, dicarbanionic ligand derived from 4,4′-di-tert-butylbiphenyl

“…Generally, attempts to react such organoselenium species with gold(III) precursors have resulted in reduction to gold(I) accompanied by oxidation of the selenium compound. 32,33 The dianionic chelating carbon ligand is likely to be stabilising this complex in the +3 oxidation state.…”

Old Selenium Heterocycles Revisited: Synthesis, Spectroscopic, and Structural Characterization ofN‐Acyl‐1,3‐selenazol‐2(3H)‐imines and 5‐Acyl‐1,3‐selenazol‐2‐amines from Acylselenourea Derivatives

“…Given that there are published reports of incorrectly assigned structures of chalcogen‐containing heterocycles formed by reactions of chalcogenoureas with phenacyl bromides, we wished to reexamine the reactions reported by Liebscher and Hartmann and to spectroscopically and structurally characterize the products to allow unambiguous assignment of the structures. This study also represents a continuation of our work on the coordination chemistry of selenoureas and other organoselenium compounds …”

Acylselenoureas, selenosemicarbazones and selenocarbamate esters: Versatile ligands in coordination chemistry

“…60 Such compounds can however be much easier prepared by reacting an imidoyl chloride with KSeCN and subsequent treatment with an amine (Scheme 5). 61,62 Scheme 4…”

“…60 Such compounds can however be much easier prepared by reacting an imidoyl chloride with KSeCN and subsequent treatment with an amine (Scheme 5). 61,62 The coordination chemistry of the diethyl derivative (HL in Scheme 5) has been investigated with various transition metals. 62 Whilst its reactivity is generally very similar to that of the acylselenoureas, the structures of the chelate rings are considerably different.…”

“…61,62 The coordination chemistry of the diethyl derivative (HL in Scheme 5) has been investigated with various transition metals. 62 Whilst its reactivity is generally very similar to that of the acylselenoureas, the structures of the chelate rings are considerably different. Whereas the acylselenoureato complexes feature almost planar chelate rings, the N-imidoselenoylcarbamato complexes display a boat-like conformation of the chelate rings.…”