• Login
    View Item 
    •   Carroll Scholars Home
    • Chemistry and Physics
    • Chemistry and Physics Undergraduate Theses
    • View Item
    •   Carroll Scholars Home
    • Chemistry and Physics
    • Chemistry and Physics Undergraduate Theses
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Comparative Chelate Stabilities By Potentiometric Titrations

    Thumbnail
    View/Open
    1959_SmartJ_THS_000152.pdf (9.907Mb)
    Author
    Smart, James
    Advisor
    James Ryan
    Date of Issue
    1959-04-01
    Metadata
    Show full item record
    URI
    https://scholars.carroll.edu/handle/20.500.12647/188
    Title
    Comparative Chelate Stabilities By Potentiometric Titrations
    Type
    thesis
    Abstract
    A chelate is a particular type of a complex or coordination compound. When a metal ion occupies two or more places on an electron donor to form a ring, it is said to form a chelation compound, the electron donor being considered the chelating agent. The word "chelate", applied to such a structure, comes from the Greek "chele", meaning claw, and thus ligands (or chelating agents) are saide to be bidentate, tridentate, quadridentate (two teeth, three teeth, four teeth, etc.) depending on the number of atoms open on the ligand for chelation. Complexes and chelates are formed by nearly all of the metals of the periodic system. Although the number of know chelating and complexing agents is very large, the donor atoms which undergo combination with the metal are restricted to the strongly non-metalic elements of Groups V and VI. Of these, N, O, and S are the only common examples. The number of applications which man has found for this class of compounds is remarkable. However, man cannot take credit for the two most important uses of chelate compounds; the use of the magnesium chelate, chlorophyll, as a catalyst for the incorporation of the hydrodgen of water into plant systems; and the use of the iron chelate, heme, as an oxygen carrier in human respiration. Chelates have found use as textile dyes, bacteriacides, water softeners, enzyme deactivators, or artificial "oxygen-carriers". They are used for approximate colorimetric estimation of ions in analytical chemistry, and they have proven valuable in separating metal ions by solvent extraction. A chelate is a particular type of a complex or coordination compound. When a metal ion occupies two or more places on an electron donor to form a ring, it is said to form a chelation compound, the electron donor being considered the chelating agent. The word "chelate", applied to such a structure, comes from the Greek "chele", meaning claw, and thus ligands (or chelating agents) are saide to be bidentate, tridentate, quadridentate (two teeth, three teeth, four teeth, etc.) depending on the number of atoms open on the ligand for chelation. Complexes and chelates are formed by nearly all of the metals of the periodic system. Although the number of know chelating and complexing agents is very large, the donor atoms which undergo combination with the metal are restricted to the strongly non-metalic elements of Groups V and VI. Of these, N, O, and S are the only common examples. The number of applications which man has found for this class of compounds is remarkable. However, man cannot take credit for the two most important uses of chelate compounds; the use of the magnesium chelate, chlorophyll, as a catalyst for the incorporation of the hydrodgen of water into plant systems; and the use of the iron chelate, heme, as an oxygen carrier in human respiration. Chelates have found use as textile dyes, bacteriacides, water softeners, enzyme deactivators, or artificial "oxygen-carriers". They are used for approximate colorimetric estimation of ions in analytical chemistry, and they have proven valuable in separating metal ions by solvent extraction.
    Degree Awarded
    Bachelor's
    Semester
    Spring
    Department
    Chemistry & Physics
    Collections
    • Chemistry and Physics Undergraduate Theses

    Browse

    All of Carroll ScholarsCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    DSpace software copyright © 2002-2022  DuraSpace
    DSpace Express is a service operated by 
    Atmire NV