Abstract
The self-assembly of [Au2(μ-(±)binap)X2], which have weakly coordinated anions X−=trifluoroacetate, triflate or nitrate, with bis(amidopyridyl) ligands (NN) has given three different macrocyclic complexes of general formula [Au4(μ-(±)binap)2(μ-NN)2]X4, an open complex [Au2(μ-(±)binap)(κ1-NN)2]X2, and a polymer [{Au2(μ-(±)binap)(μ-NN)}n]X2n. Macrocycles with both homochiral (RR/SS) and heterochiral (RS/SR) combinations of the two binap ligands in the cations [Au4(μ-binap)2(μ-NN)2]4+ have been structurally characterized. The polymeric complex has the syndiotactic (heterochiral) architecture. The donor ability of the anion X− is shown to affect both the degree of self-assembly in solution, through competition with the bis(amidopyridyl) ligand for coordination to gold(I), and the conformation of the bis(amidopyridyl) ligand in the products, through hydrogen bonding effects. In solution, there is a rapid equilibrium between cyclic and open chain oligomers, as determined by ESI-MS and NMR studies.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
