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Although the reaction can proceed by using ethanol or other alcohols as solvent, the use of 1,4\u2010dioxane gave the best product yield. All particle shapes gave exclusively the <jats:italic>E<\/jats:italic>\u2010product, but the rhombic dodecahedra exposing {110} surfaces were consistently far more reactive than the other particle morphologies. A product yield of 99\u2009% was achieved by using Cu<jats:sub>2<\/jats:sub>O rhombic dodecahedra to catalyze the hydroboration of phenylacetylene at 60\u2009\u00b0C for 5\u2005h. The rhombic dodecahedra have been shown to catalyze a variety of substituted aryl alkynes, which demonstrates their potential as a versatile catalyst.<\/jats:p>","DOI":"10.1002\/chem.201804463","type":"journal-article","created":{"date-parts":[[2018,10,31]],"date-time":"2018-10-31T10:22:02Z","timestamp":1540981322000},"page":"1300-1303","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":36,"title":["Polyhedral Cu<sub>2<\/sub>O Crystals for Diverse Aryl Alkyne Hydroboration Reactions"],"prefix":"10.1002","volume":"25","author":[{"given":"Hsin\u2010Yi","family":"Tsai","sequence":"first","affiliation":[{"name":"Department of Chemistry National Tsing Hua University  Hsinchu 30013 Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mahesh","family":"Madasu","sequence":"additional","affiliation":[{"name":"Department of Chemistry National Tsing Hua University  Hsinchu 30013 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