1. Guest, be sure to check out How To Get Into Dental School, our free downloadable PDF with step-by-step details for dental school applicants!
    Dismiss Notice
  2. New SDN Article! Should You Consider a Direct Admission to Medical School Program?
    Dismiss Notice
Free Dental Admissions Guide Article: Direct Admit
Dismiss Notice
Promotion of DAT test prep materials is not allowed.

OChem: Naming Alkanes w/ Two Halogens

Discussion in 'DAT Discussions' started by informatique, May 31, 2008.

Previous Thread Next Thread
Loading...
  1. informatique

    informatique

    Joined:
    Mar 24, 2008
    Messages:
    190
    Likes Received:
    0
    Status:
    Pre-Dental
    I just got "Organic Chemistry Odyssey" and started working on the problems.

    One nomenclature problem has:

    1) 2-bromo-3-flourobutane

    the other one is:

    2) 2-chloro-3-iodobutane

    ??????????

    Electronegativity= F>Cl>Br>I
    Molecular Weight = I>Cl>Br>F

    How am I supposed to name dihaloalkanes?? (*I took out R/S configurations...I just need to know the numbering)
     
    #1 informatique, May 31, 2008
    2. Thread continues after this sponsor message. SDN Members do not see this ad.

  2. userah

    userah

    Joined:
    Aug 9, 2007
    Messages:
    555
    Likes Received:
    0
    Status:
    Dental Student
    it's alphabetical. Chlorine before Iodine. Bromine before Fluorine
     
    #2 userah, May 31, 2008
  3. Hugh Mannity

    Hugh Mannity

    Joined:
    May 15, 2008
    Messages:
    228
    Likes Received:
    0
    Status:
    Pre-Dental
    Alphabetical only if each substituent is equally far from the beginning of the end of the chain. Lowest number for first substituent is rule #1 for unbranched alkanes. If equal possibilities, then alphabetical.
     
    #3 Hugh Mannity, May 31, 2008
Previous Thread Next Thread
Loading...
(You must log in or sign up to post here.)

Share This Page