Polymers lanthanide halides

Various lanthanide halides (ScCb, YCI3, LaCb, Ndl3) react with K2[3-(C3Et3SiMe3-l)2SiMe2] to form an5 a-bis(aUyl) complexes. The lanthanum derivative has been stmcturally authenticated as a coordination polymer (14), in which aUyl anions interleave alternating lanthanum and potassium ions the latter display K- MeSi contacts of 2.79(3) and2.96(4) A. ... 

Preparation of poly(8-caprolactone) (PCL), a biodegradable polymer that finds applications in the biomedical field for prostheses, bandages, or controlled drug release matrix for active substances, was successfully accomplished by heating the monomer in the presence of nontoxic, biologically acceptable lanthanide halides (SmBrj, SmCl3, YbBrj) as initiators in a scientific microwave unit (Scheme 3.5). PCL with a Af of 14,100 g/mol was obtained after heating at 200 °C for 45 min in the absence of solvent. 

Acetyl ligands, in niobium complexes, C-H BDEs, 1, 298 Achiral phosphines, on polymer-supported peptides, 12, 698 Acid halides, indium compound reactions, 9, 683 Acidity, one-electron oxidized metal hydrides, 1, 294 Acid leaching, in organometallic stability studies, 12, 612 Acid-platinum rf-monoalkynes, interactions, 8, 641 Acrylate, polymerization with aluminum catalysts, 3, 280 Acrylic monomers, lanthanide-catalyzed polymerization,... 

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