{"id":205522,"date":"2025-03-24T17:30:12","date_gmt":"2025-03-24T17:30:12","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=205522"},"modified":"2025-03-24T17:30:14","modified_gmt":"2025-03-24T17:30:14","slug":"the-most-stable-conformation-of-cis-1-tert-butyl-2-mothylcyclohexane-is-the-one-in-which","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/03\/24\/the-most-stable-conformation-of-cis-1-tert-butyl-2-mothylcyclohexane-is-the-one-in-which\/","title":{"rendered":"The Most Stable Conformation Of Cis-1-Tert-Butyl-2-Mothylcyclohexane Is The One In Which"},"content":{"rendered":"\n

The Most Stable Conformation Of Cis-1-Tert-Butyl-2-Mothylcyclohexane Is The One In Which:<\/p>\n\n\n\n

A) The Tert -Butyl Group Is Axial And The Methyl Group In Equatorial.
B) The Methyl Group Is Axial And The Tert -Butyl Group Is Equatorial.
C) Both Groups Are Axial.
D) Both Groups Are Equatorial.
E) None Of The Above<\/p>\n\n\n\n

The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n

The correct answer is B) The Methyl Group Is Axial And The Tert-Butyl Group Is Equatorial<\/strong>.<\/p>\n\n\n\n

Explanation:<\/h3>\n\n\n\n

To determine the most stable conformation of cis-1-tert-butyl-2-methylcyclohexane<\/strong>, we need to consider the following factors:<\/p>\n\n\n\n

    \n
  1. Steric Hindrance and Size of Groups:<\/strong><\/li>\n<\/ol>\n\n\n\n
      \n
    • Tert-butyl group (C\u2084H\u2089)<\/strong> is bulky and will experience significant steric strain if placed in the axial<\/strong> position. This is because axial positions in cyclohexane conformations are in close proximity to the other axial substituents on the same side of the ring (called 1,3-diaxial interactions<\/strong>). These interactions cause steric hindrance and lead to increased strain when a large group occupies the axial position.<\/li>\n\n\n\n
    • Methyl group (CH\u2083)<\/strong> is smaller and can more easily be accommodated in the axial<\/strong> position because it doesn’t introduce as much steric strain compared to the tert-butyl group.<\/li>\n<\/ul>\n\n\n\n
        \n
      1. Conformation of Cyclohexane Rings:<\/strong><\/li>\n<\/ol>\n\n\n\n
          \n
        • The chair conformation of cyclohexane allows for substituents to occupy either axial or equatorial positions.<\/li>\n\n\n\n
        • The equatorial position<\/strong> is generally more favorable for large substituents, such as the tert-butyl group<\/strong>, because it minimizes steric interactions.<\/li>\n\n\n\n
        • The axial position<\/strong> is typically preferred for smaller substituents, like the methyl group<\/strong>, to avoid steric clashes.<\/li>\n<\/ul>\n\n\n\n

          Most Stable Conformation:<\/h3>\n\n\n\n

          In the cis<\/strong> form of 1-tert-butyl-2-methylcyclohexane:<\/p>\n\n\n\n

            \n
          • The tert-butyl group<\/strong> will prefer to be equatorial<\/strong> because it is large and its axial positioning would create significant steric hindrance (1,3-diaxial interactions).<\/li>\n\n\n\n
          • The methyl group<\/strong> will prefer to be axial<\/strong> since it is smaller and can fit better in this position with less steric interference.<\/li>\n<\/ul>\n\n\n\n

            Thus, the most stable conformation is one where the tert-butyl group is equatorial<\/strong>, and the methyl group is axial<\/strong>.<\/p>\n\n\n\n

            Image:<\/h3>\n\n\n\n

            Here\u2019s a diagram of the two possible chair conformations of cis-1-tert-butyl-2-methylcyclohexane<\/strong>, showing the most stable conformation (with tert-butyl equatorial and methyl axial).<\/p>\n\n\n\n

            \"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

            The Most Stable Conformation Of Cis-1-Tert-Butyl-2-Mothylcyclohexane Is The One In Which: A) The Tert -Butyl Group Is Axial And The Methyl Group In Equatorial.B) The Methyl Group Is Axial And The Tert -Butyl Group Is Equatorial.C) Both Groups Are Axial.D) Both Groups Are Equatorial.E) None Of The Above The correct answer and explanation is : […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-205522","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/205522","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=205522"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/205522\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=205522"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=205522"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=205522"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}