{"id":759,"date":"2019-02-06T15:55:53","date_gmt":"2019-02-06T19:55:53","guid":{"rendered":"http:\/\/blog.richmond.edu\/pollocklab\/?p=759"},"modified":"2019-02-06T15:55:53","modified_gmt":"2019-02-06T19:55:53","slug":"ring-flips-of-chair-conformations","status":"publish","type":"post","link":"https:\/\/create.richmond.edu\/pollocklab\/2019\/02\/06\/ring-flips-of-chair-conformations\/","title":{"rendered":"Ring Flips of Chair Conformations"},"content":{"rendered":"<p>[et_pb_section bb_built=&#8221;1&#8243;][et_pb_row][et_pb_column type=&#8221;4_4&#8243;][et_pb_text _builder_version=&#8221;3.11&#8243; text_orientation=&#8221;justified&#8221;]<\/p>\n<p>I&#8217;m back in the lecture classroom again this semester &#8212; I was on research leave Spring 2018 and have been teaching biochemistry labs and my chemical biology discussion-based course in Fall 2017\/2018. I have two sections of the first semester of organic chemistry (CHEM 205 at UR). Many of the students are first-year students and so when the light-bulb clicks on, it shows all over their face.<\/p>\n<p>One of my favorite demonstrations is holding up a color-coded model of cyclohexane and performing a ring flip. I will put all blue groups in the axial positions and all green groups in the equatorial positions. When the ring flip happens, they switch directions. I ask the students to watch closely, to focus on the structure, and then I do the flip. There is always an exclamation, a sense of awe (and maybe confusion to how I did it), but it gets the point across so clearly.<\/p>\n<p>A week from today, the students have their first hour exam. Please send motivational thoughts toward Richmond during the morning, especially if they are related to chair structures of cyclohexanes.<\/p>\n<p>~jap<\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p><div class=\"et_pb_row et_pb_row_0 et_pb_row_empty\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div> I&#8217;m back in the lecture classroom again this semester &#8212; I was on research leave Spring 2018 and have been teaching biochemistry labs and my chemical biology discussion-based course in Fall 2017\/2018. I have two sections of the first semester of organic chemistry (CHEM 205 at UR). Many of the students are first-year students [&hellip;]<\/p>\n","protected":false},"author":1880,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[795,35898,33],"tags":[],"class_list":["post-759","post","type-post","status-publish","format-standard","hentry","category-blog","category-students","category-teaching"],"_links":{"self":[{"href":"https:\/\/create.richmond.edu\/pollocklab\/wp-json\/wp\/v2\/posts\/759","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/create.richmond.edu\/pollocklab\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/create.richmond.edu\/pollocklab\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/create.richmond.edu\/pollocklab\/wp-json\/wp\/v2\/users\/1880"}],"replies":[{"embeddable":true,"href":"https:\/\/create.richmond.edu\/pollocklab\/wp-json\/wp\/v2\/comments?post=759"}],"version-history":[{"count":0,"href":"https:\/\/create.richmond.edu\/pollocklab\/wp-json\/wp\/v2\/posts\/759\/revisions"}],"wp:attachment":[{"href":"https:\/\/create.richmond.edu\/pollocklab\/wp-json\/wp\/v2\/media?parent=759"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/create.richmond.edu\/pollocklab\/wp-json\/wp\/v2\/categories?post=759"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/create.richmond.edu\/pollocklab\/wp-json\/wp\/v2\/tags?post=759"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}