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Title: Stability of lanthanide and actinide complexes of a hexadentate nitrogen donor

Abstract

This study is part of a research project whose objective is to develop trivalent lanthanide and actinide complexes with soft-donor ligands, to compare their bonding properties, and to enhance the bonding differences of 4f and 5f ions coordinated to soft donors. The stability constants of 1:1 complexes of several M{sup 3+} (M=lanthanide or actinide) ions with the hexadentate ligand tetrakis (2-pyridyl-methyl)-1,2-ethylenediamine (TPEN) have been determined by potentiometry or by distribution measurements. The La{sup 3+} and Tb{sup 3+} complexes are known from crystal structures to be 10-coordinated to six TPEN nitrogens and to four oxygens from two nitrates. Of particular interest is the fact that in these complexes the soft donor nitrogen coordinates to f-element ions in the presence of hard donor oxygens of water. The stability constants will be compared with those of other hexadentate ligands with oxygen donors.

Authors:
 [1];  [2]
  1. Argonne National Lab., IL (United States)
  2. Tennessee Technological Univ., Cookeville, TN (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
OSTI Identifier:
560315
Report Number(s):
CONF-970443-
TRN: 97:005895-0252
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Conference
Resource Relation:
Conference: 213. national meeting of the American Chemical Society, San Francisco, CA (United States), 13-17 Apr 1997; Other Information: PBD: 1997; Related Information: Is Part Of 213th ACS national meeting; PB: 2904 p.
Country of Publication:
United States
Language:
English
Subject:
40 CHEMISTRY; ACTINIDE COMPLEXES; LIGANDS; POTENTIOMETRY; STABILITY; ORGANIC NITROGEN COMPOUNDS; MOLECULAR STRUCTURE; LANTHANUM COMPLEXES

Citation Formats

Morss, L R, and Ensor, D D. Stability of lanthanide and actinide complexes of a hexadentate nitrogen donor. United States: N. p., 1997. Web.
Morss, L R, & Ensor, D D. Stability of lanthanide and actinide complexes of a hexadentate nitrogen donor. United States.
Morss, L R, and Ensor, D D. 1997. "Stability of lanthanide and actinide complexes of a hexadentate nitrogen donor". United States.
@article{osti_560315,
title = {Stability of lanthanide and actinide complexes of a hexadentate nitrogen donor},
author = {Morss, L R and Ensor, D D},
abstractNote = {This study is part of a research project whose objective is to develop trivalent lanthanide and actinide complexes with soft-donor ligands, to compare their bonding properties, and to enhance the bonding differences of 4f and 5f ions coordinated to soft donors. The stability constants of 1:1 complexes of several M{sup 3+} (M=lanthanide or actinide) ions with the hexadentate ligand tetrakis (2-pyridyl-methyl)-1,2-ethylenediamine (TPEN) have been determined by potentiometry or by distribution measurements. The La{sup 3+} and Tb{sup 3+} complexes are known from crystal structures to be 10-coordinated to six TPEN nitrogens and to four oxygens from two nitrates. Of particular interest is the fact that in these complexes the soft donor nitrogen coordinates to f-element ions in the presence of hard donor oxygens of water. The stability constants will be compared with those of other hexadentate ligands with oxygen donors.},
doi = {},
url = {https://www.osti.gov/biblio/560315}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Dec 31 00:00:00 EST 1997},
month = {Wed Dec 31 00:00:00 EST 1997}
}

Conference:
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