The compound [Rh(nbd){κ2P,N-Ph2P(CH2)3NMe2}][BF4] efficiently catalyzes the polymerization of ring-substituted phenylacetylenes to give highly stereoregular megadalton and ultra-high molecular weight polymers with moderate dispersity.
Alkynyl rhodium(I) complexes with functionalized phosphine ligands efficiently catalyze the polymerization of phenylacetylene to give a highly stereoregular linear poly(phenylacetylene) with a fraction of high molecular weight branched polymer.
Addition of acids H-X at ligand-stabilized phosphinidene complexes forms P–H/P-X phosphane complexes whereas P–H containing phosphenium complex adducts are formed with superstrong acids. Detailed quantum chemical calculations provide further insights.
Arg, Lys, His, and Trp were identified that enable controllable peptide–polyphenol assembly via pH/ratio tuning. The resulting materials allow universal protein loading for enzyme cascades, targeted delivery, and stimuli-responsive applications.
C–N bond cleavage of pyridine rings bonded to well-defined cis-dicarbonyl Re(I) complexes has been achieved, affording bipy and phen (for the first time) ring-opening products.