{"id":660,"date":"2026-04-15T13:26:43","date_gmt":"2026-04-15T13:26:43","guid":{"rendered":"https:\/\/citations.tools.bio-logic.fr\/?p=660"},"modified":"2026-04-15T13:26:43","modified_gmt":"2026-04-15T13:26:43","slug":"activation-of-crcl3r-snhs-r-catalysts-for-selective-trimerization-of-ethene-a-freeze-quench-cr-k-edge-xafs-study","status":"publish","type":"post","link":"https:\/\/citations.tools.bio-logic.fr\/?p=660","title":{"rendered":"Activation of [CrCl<sub>3<\/sub>{R-SN(H)S-R}] Catalysts for Selective Trimerization of Ethene: A Freeze-Quench Cr K-Edge XAFS Study"},"content":{"rendered":"<h4>DOI:<\/h4>\n<p><a href=\"https:\/\/doi.org\/10.1021\/cs501017g\" target=\"_blank\" rel=\"noopener\">10.1021\/cs501017g<\/a><\/p>\n<h4>Authors:<\/h4>\n<p>Stuart A. Bartlett, Jerome Moulin, Moniek Tromp, Gillian Reid, Andrew J. Dent, Giannantonio Cibin, David S. McGuinness, John Evans<\/p>\n<h4>Abstract:<\/h4>\n<p>Homogeneous chromium catalysts for the selective conversion of ethene to hex-1-ene are formed from Cr(III) reagents, aminothioether ligands of the type HN(CH2CH2SR)2, and aluminum reagents. In this study, the early activation steps are investigated by EPR, UV\u2013visible, and Cr K-edge XAFS spectroscopy; rapid stopped-flow mixing and a freeze-quench allows good quality EXAFS analysis of a species formed in \u223c1 s of reaction. This is shown to involve reduction to Cr(II) and deprotonation of a NH group of the auxiliary ligand. This 4-coordinate metal center may act as precursor for the coordination of ethene and subsequent selective oligomerization.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>DOI: 10.1021\/cs501017g Authors: Stuart A. Bartlett, Jerome Moulin, Moniek Tromp, Gillian Reid, Andrew J. Dent, Giannantonio Cibin, David S. McGuinness, John Evans Abstract: Homogeneous chromium catalysts for the selective conversion of ethene to hex-1-ene are formed from Cr(III) reagents, aminothioether ligands of the type HN(CH2CH2SR)2, and aluminum reagents. In this study, the early activation steps [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-660","post","type-post","status-publish","format-standard","hentry","category-freeze-quench"],"_links":{"self":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/posts\/660","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=660"}],"version-history":[{"count":0,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/posts\/660\/revisions"}],"wp:attachment":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=660"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=660"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=660"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}