{"id":74058,"date":"2012-05-06T15:47:13","date_gmt":"2012-05-06T15:47:13","guid":{"rendered":"http:\/\/www.immortalitymedicine.tv\/chemistry\/bye-bye-pi-pi.php"},"modified":"2024-08-17T17:57:13","modified_gmt":"2024-08-17T21:57:13","slug":"bye-bye-pi-pi","status":"publish","type":"post","link":"https:\/\/www.euvolution.com\/futurist-transhuman-news-blog\/chemistry\/bye-bye-pi-pi.php","title":{"rendered":"Bye bye pi-pi?"},"content":{"rendered":"<p>An interesting title popped up in my feed the other day: Chelsea R Martinez and Brent L Iverson&rsquo;s Perspective article &lsquo;Rethinking the term pi-stacking&rsquo; (<a href=\"http:\/\/pubs.rsc.org\/en\/journals\/journal\/sc\"><em>Chem. Sci.<\/em><\/a>, 2012,&nbsp;DOI: <a href=\"http:\/\/pubs.rsc.org\/en\/results?searchtext=c2sc20045g\">10.1039\/C2SC20045G<\/a>). I don&rsquo;t think I&rsquo;d ever thought much about pi-stacking if I&rsquo;m honest; the concept seemed to make sense and it just got absorbed into my brain along with those other concepts that I now find are mutable, like <a href=\"http:\/\/www.rsc.org\/chemistryworld\/News\/2010\/November\/03111001.asp\">hydrogen bonds<\/a>.<span><\/span><\/p><p>I&rsquo;ll leave the complexities of the argument to the paper, but considering that pi-pi interactions seem so ubiquitous, especially in biological and&nbsp;supra molecular&nbsp;chemistry, where do they say we&rsquo;ve been going wrong? Essentially, the point Martinez and Iverson make is that just because&nbsp;interactions&nbsp;involve pi-bonds doesn&rsquo;t make them&nbsp;inherently&nbsp;different from other interactions. For example, they discuss alternating electron rich and deficient aromatic systems. Is that face centred stacking really special, or is it just normal donor-acceptor chemistry?<\/p><p>So what do you think, and what other contentious chemistries do you enjoy debating?<\/p><p><em>Laura Howes<\/em><\/p><div><a href=\"http:\/\/digg.com\/submit?url=http%3A%2F%2Fprospect.rsc.org%2Fblogs%2Fcw%2F2012%2F04%2F30%2Fbye-bye-pi-pi%2F&amp;title=Bye+bye+pi-pi%3F\"><img decoding=\"async\" class=\"lightsocial_img\" src=\"https:\/\/www.immortalitymedicine.tv\/wp-content\/plugins\/wp-o-matic\/cache\/c3627_digg.png\" alt=\"Digg This\" style=\"padding-left:10px; padding-right: 10px;\"><\/a>&nbsp;&nbsp;<a href=\"http:\/\/www.reddit.com\/submit?url=http%3A%2F%2Fprospect.rsc.org%2Fblogs%2Fcw%2F2012%2F04%2F30%2Fbye-bye-pi-pi%2F&amp;title=Bye+bye+pi-pi%3F\"><img decoding=\"async\" class=\"lightsocial_img\" src=\"https:\/\/www.immortalitymedicine.tv\/wp-content\/plugins\/wp-o-matic\/cache\/e7e43_reddit.png\" alt=\"Reddit This\" style=\"padding-left:10px; padding-right: 10px;\"><\/a>&nbsp;&nbsp;<a href=\"http:\/\/www.stumbleupon.com\/submit?url=http%3A%2F%2Fprospect.rsc.org%2Fblogs%2Fcw%2F2012%2F04%2F30%2Fbye-bye-pi-pi%2F&amp;title=Bye+bye+pi-pi%3F\"><img decoding=\"async\" class=\"lightsocial_img\" src=\"https:\/\/www.immortalitymedicine.tv\/wp-content\/plugins\/wp-o-matic\/cache\/e7e43_stumbleupon.png\" alt=\"Stumble Now!\" style=\"padding-left:10px; padding-right: 10px;\"><\/a>&nbsp;&nbsp;<a href=\"http:\/\/www.facebook.com\/sharer.php?t=Bye+bye+pi-pi%3F&amp;u=http%3A%2F%2Fprospect.rsc.org%2Fblogs%2Fcw%2F2012%2F04%2F30%2Fbye-bye-pi-pi%2F\"><img decoding=\"async\" class=\"lightsocial_img\" src=\"https:\/\/www.immortalitymedicine.tv\/wp-content\/plugins\/wp-o-matic\/cache\/e7e43_facebook.png\" alt=\"Share on Facebook\" style=\"padding-left:10px; padding-right: 10px;\"><\/a>&nbsp;&nbsp;<a href=\"http:\/\/delicious.com\/save?title=Bye+bye+pi-pi%3F&amp;url=http%3A%2F%2Fprospect.rsc.org%2Fblogs%2Fcw%2F2012%2F04%2F30%2Fbye-bye-pi-pi%2F\"><img decoding=\"async\" class=\"lightsocial_img\" src=\"https:\/\/www.immortalitymedicine.tv\/wp-content\/plugins\/wp-o-matic\/cache\/e7e43_delicious.png\" alt=\"Bookmark this on Delicious\" style=\"padding-left:10px; padding-right: 10px;\"><\/a>&nbsp;&nbsp;<a href=\"http:\/\/www.linkedin.com\/shareArticle?mini=true&amp;url=http%3A%2F%2Fprospect.rsc.org%2Fblogs%2Fcw%2F2012%2F04%2F30%2Fbye-bye-pi-pi%2F&amp;title=Bye+bye+pi-pi%3F&amp;summary=&amp;source=\"><img decoding=\"async\" class=\"lightsocial_img\" src=\"https:\/\/www.immortalitymedicine.tv\/wp-content\/plugins\/wp-o-matic\/cache\/bc64f_linkedin.png\" alt=\"Share on LinkedIn\" style=\"padding-left:10px; padding-right: 10px;\"><\/a>&nbsp;&nbsp;<a href=\"http:\/\/www.technorati.com\/faves?add=http%3A%2F%2Fprospect.rsc.org%2Fblogs%2Fcw%2F2012%2F04%2F30%2Fbye-bye-pi-pi%2F\"><img decoding=\"async\" class=\"lightsocial_img\" src=\"https:\/\/www.immortalitymedicine.tv\/wp-content\/plugins\/wp-o-matic\/cache\/bc64f_technorati.png\" alt=\"Bookmark this on Technorati\" style=\"padding-left:10px; padding-right: 10px;\"><\/a>&nbsp;&nbsp;<a href=\"http:\/\/twitter.com\/home?status=Reading+http%3A%2F%2Fprospect.rsc.org%2Fblogs%2Fcw%2F2012%2F04%2F30%2Fbye-bye-pi-pi%2F\"><img decoding=\"async\" class=\"lightsocial_img\" src=\"https:\/\/www.immortalitymedicine.tv\/wp-content\/plugins\/wp-o-matic\/cache\/bc64f_twitter.png\" alt=\"Post on Twitter\" style=\"padding-left:10px; padding-right: 10px;\"><\/a>&nbsp;&nbsp;<a href=\"http:\/\/www.google.com\/buzz\/post?url=http%3A%2F%2Fprospect.rsc.org%2Fblogs%2Fcw%2F2012%2F04%2F30%2Fbye-bye-pi-pi%2F\"><img decoding=\"async\" class=\"lightsocial_img\" src=\"https:\/\/www.immortalitymedicine.tv\/wp-content\/plugins\/wp-o-matic\/cache\/0a9ae_google_buzz.png\" alt=\"Google Buzz (aka. Google Reader)\" style=\"padding-left:10px; padding-right: 10px;\"><\/a>&nbsp;&nbsp;<\/div><p>Source:<br><a href=\"http:\/\/prospect.rsc.org\/blogs\/cw\/?feed=rss2\">http:\/\/prospect.rsc.org\/blogs\/cw\/?feed=rss2<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>An interesting title popped up in my feed the other day: Chelsea R Martinez and Brent L Iverson&rsquo;s Perspective article &lsquo;Rethinking the term pi-stacking&rsquo; (Chem. Sci., 2012,&nbsp;DOI: 10.1039\/C2SC20045G). I don&rsquo;t think I&rsquo;d ever thought much about pi-stacking if I&rsquo;m honest; &hellip; <a href=\"https:\/\/www.euvolution.com\/futurist-transhuman-news-blog\/chemistry\/bye-bye-pi-pi.php\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"limit_modified_date":"","last_modified_date":"","_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[1246863],"tags":[],"class_list":["post-74058","post","type-post","status-publish","format-standard","hentry","category-chemistry"],"modified_by":null,"_links":{"self":[{"href":"https:\/\/www.euvolution.com\/futurist-transhuman-news-blog\/wp-json\/wp\/v2\/posts\/74058"}],"collection":[{"href":"https:\/\/www.euvolution.com\/futurist-transhuman-news-blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.euvolution.com\/futurist-transhuman-news-blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.euvolution.com\/futurist-transhuman-news-blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.euvolution.com\/futurist-transhuman-news-blog\/wp-json\/wp\/v2\/comments?post=74058"}],"version-history":[{"count":0,"href":"https:\/\/www.euvolution.com\/futurist-transhuman-news-blog\/wp-json\/wp\/v2\/posts\/74058\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.euvolution.com\/futurist-transhuman-news-blog\/wp-json\/wp\/v2\/media?parent=74058"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.euvolution.com\/futurist-transhuman-news-blog\/wp-json\/wp\/v2\/categories?post=74058"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.euvolution.com\/futurist-transhuman-news-blog\/wp-json\/wp\/v2\/tags?post=74058"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}