Paula L. Diaconescu

A tandem catalyst for Suzuki coupling of activated or deactivated aryl chlorides and aryl boronic acids in water and for phenol synthesis from aryl chlorides in 1:1 water/dioxane was obtained by supporting palladium nanoparticles on polyaniline nanofibers (PANI; see TEM image). Thus, 2-phenylphenol was synthesized from 1,2-dichlorobenzene (see equation). Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2007/z701389_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTArene-Bridged Diuranium Complexes: Inverted Sandwiches Supported by δ BackbondingPaula L. Diaconescu, Polly L. Arnold, Thomas A. Baker, Daniel J. Mindiola, and Christopher C. CumminsView Author Information Department of Chemistry Room 2-227 Massachusetts Institute of Technology Cambridge, Massachusetts 02139-4307 Cite this: J. Am. Chem. Soc. 2000, 122, 25, 6108–6109Publication Date (Web):June 9, 2000Publication History Received23 December 1999Published online9 June 2000Published inissue 1 June 2000https://pubs.acs.org/doi/10.1021/ja994484ehttps://doi.org/10.1021/ja994484erapid-communicationACS PublicationsCopyright © 2000 American Chemical SocietyRequest reuse permissionsArticle Views3353Altmetric-Citations282LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-AlertscloseSupporting Info (1)»Supporting Information Supporting Information SUBJECTS:Aromatic compounds,Group theory,Hydrocarbons,Reaction products,Uranium Get e-Alerts

The activity of several group 4 metal alkoxide complexes supported by ferrocene-based ligands was controlled using redox reagents during the ring-opening polymerization of l-lactide and ε-caprolactone. Switching in situ between the oxidized and reduced forms of a metal complex resulted in a change in the corresponding rate of polymerization. Opposite behavior was observed for each monomer used. One-pot copolymerization of the two monomers to give block copolymers was also achieved.

The activity of an yttrium alkoxide complex supported by a ferrocene-based ligand was controlled using redox reagents during the ring-opening polymerization of L-lactide. The oxidized complex was characterized by X-ray crystallography and (1)H NMR, XANES, and Mössbauer spectroscopy. Switching in situ between the oxidized and reduced yttrium complexes resulted in a change in the rate of polymerization of L-lactide. Synthesized polymers were analyzed by gel permeation chromatography. Polymerization of trimethylene carbonate was also performed with the reduced and oxidized forms of an indium alkoxide complex. The indium system showed the opposite behavior to that of yttrium, revealing a metal-based dependency on the rate of polymerization.

DyIII single-ion magnets (SIMs) with strong axial donors and weak equatorial ligands are attractive model systems with which to harness the maximum magnetic anisotropy of DyIII ions. Utilizing a rigid ferrocene diamide ligand (NNTBS), a DyIII SIM, (NNTBS)DyI(THF)2, 1-Dy (NNTBS = fc(NHSitBuMe2)2, fc = 1,1′-ferrocenediyl), composed of a near linear arrangement of donor atoms, exhibits a large energy barrier to spin reversal (770.8 K) and magnetic blocking (14 K). The effects of the transverse ligands on the magnetic and electronic structure of 1-Dy were investigated through ab initio methods, eliciting significant magnetic axiality, even in the fourth Kramers doublet, thus demonstrating the potential of rigid diamide ligands in the design of new SIMs with defined magnetic axiality.