Organoselenium ligands for heterogeneous and nanocatalytic systems: development and applications.

Organoselenium ligands have attracted great attention among researchers during the past two decades. Various homogeneous, heterogeneous and nanocatalytic systems have been designed using such ligands. Although reports on selenium ligated homogeneous catalysts are quite high in number, significant work has also been done on the development of heterogeneous and nanocatalytic systems using organoselenium ligands.

Catalytically active nanosized PdTe (telluropalladinite) and PdTe (kotulskite) alloys: first precursor-architecture controlled synthesis using palladium complexes of organotellurium compounds as single source precursors.

Several intermetallic binary phases of Pd-Te including PdTe, PdTe, PdTe, PdTe, PdTe, PdTe, PdTe, PdTe, PdTe, PdTe, PdTe and PdTe are known, and negligible work (except few studies on PdTe) has been done on exploring applications of such phases and their fabrication at nanoscale. Hence, Pd(ii) complexes Pd(L1)Cl and Pd(L2-H)Cl (L1): Ph-Te-CH-CH-NH and L2: HO-2-CH-CH[double bond, length as m-dash]N-CHCH-Te-Ph were synthesized. Under similar thermolytic conditions, complex Pd(L1)Cl with bidentate coordination mode of ligand provided nanostructures of PdTe (telluropalladinite) whereas Pd(L2-H)Cl with tridentate coordination mode of ligand yielded PdTe (kotulskite).

Ultra-small palladium nano-particles synthesized using bulky S/Se and N donor ligands as a stabilizer: application as catalysts for Suzuki-Miyaura coupling.

Two chalcogenated ligands L1 and L2 containing anthracene core and amine functionality have been synthesized. Both the ligands have been characterized using H and C{H} NMR techniques. The structure of L1 has also been corroborated by single crystal X-ray diffraction.