Metal Complexes with Macrocylclic Ligands. Part XXXV . Stabilities of some bivalent metal‐ion complexes with 1,4,7‐triazacyclononane‐1‐acetie acid | Zendy

Cai HuiZhi | Zendy; Kaden Thomas A. | Zendy

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Metal Complexes with Macrocylclic Ligands. Part XXXV . Stabilities of some bivalent metal‐ion complexes with 1,4,7‐triazacyclononane‐1‐acetie acid

Author(s) -

Cai HuiZhi,

Kaden Thomas A.

Publication year - 1993

Publication title -

helvetica chimica acta

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.74

H-Index - 82

eISSN - 1522-2675

pISSN - 0018-019X

DOI - 10.1002/hlca.19930760137

Subject(s) - chemistry , bivalent (engine) , potentiometric titration , metal , metal ions in aqueous solution , acetic acid , titration , inorganic chemistry , nuclear chemistry , ion , biochemistry , organic chemistry

The stability constants of the Mn 2+ , Zn 2+ , Ni 2+ , pb 2+ , and Cd 2+ complexes with 1,4,7‐triazacylononane‐1‐acetic acid (noma) were determined at 25° and 0.5 M (KNO 3 ) by potentiometric titrations. The species [ML] and [ML(OH)] were found in al cases except for Ni 2+ , whereas [ML 2 ] was only detected for Cd 2+ . For the complexes [ML], the order of stability is Mn 2+ < Cd 2+ < pb 2+ < Zn 2+ < Zn 2+ < Ni 2+ < Cu 2+ , which is consisten with the Irvin ‐ Williams Series.

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