{"id":269002,"date":"2025-07-24T10:12:34","date_gmt":"2025-07-24T10:12:34","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=269002"},"modified":"2025-07-24T10:12:44","modified_gmt":"2025-07-24T10:12:44","slug":"identify-the-newman-projection-that-depicts-the-anti-conformation-of-1-bromopropane","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/07\/24\/identify-the-newman-projection-that-depicts-the-anti-conformation-of-1-bromopropane\/","title":{"rendered":"Identify the Newman projection that depicts the anti conformation of 1- bromopropane."},"content":{"rendered":"\n

Identify the Newman projection that depicts the anti conformation of 1- bromopropane. 1 Br 11 Br H H H H A) I H H H CH
CH
H B) II III H IV H Br H H C) III H Br H CH
CH
H D) IV V H
C Br H ?? E) V H<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n

front carbon has one Br and two H atoms. The back carbon has one CH\u2083 and two H atoms. The Br atom is positioned directly opposite the CH\u2083 group (a 180\u00b0 dihedral angle). This perfectly matches the definition of the anti conformation of 1-bromopropane.
* Structure II:<\/strong> This is also a staggered conformation of 1-bromopropane. However, the Br group and the CH\u2083 group are adjacent, with a dihedral angle of 60\u00b0. This is known as the “gauche” conformation, which is less stable than the anti conformation.
* Structure III:<\/strong> The front carbon has three H atoms, and the back carbon has a Br, a CH\u2083, and an H. This represents 2-bromopropane (CH\u2083CH(Br)CH\u2083), not 1-bromopropane.
* Structure IV:<\/strong> This is an “eclipsed” conformation of 1-bromopropane. The substituents on the front and back carbons are aligned, causing maximum steric strain. This is a high-energy, unstable conformation.
* Structure V:<\/strong> The front carbon has a Br, a CH\u2083, and an H. This also represents 2-bromopropane.<\/p>\n\n\n\n

Therefore, structure I<\/strong> is the only Newman projection that correctly depicts the stable anti conformation of<\/p>\n\n\n\n

1-bromopropane.<\/p>\n\n\n\n

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

Identify the Newman projection that depicts the anti conformation of 1- bromopropane. 1 Br 11 Br H H H H A) I H H H CHCHH B) II III H IV H Br H H C) III H Br H CHCHH D) IV V HC Br H ?? E) V H The Correct Answer and […]<\/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-269002","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/269002","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=269002"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/269002\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=269002"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=269002"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=269002"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}