Syntheses and structural analyses of nine-coordinate protonated (Py)2[GdIII(HNta)(Nta)(H2O)] · 5H2O and eight-coordinate (NH4)3[HoIII(Nta)2] complexes

Syntheses and structural analyses of nine-coordinate protonated (Py)2[GdIII(HNta)(Nta)(H2O)] ·... The syntheses and structural determination of Gd(III) and Ho(III) complexes with nitrilotriacetic acids (Nta) were reported in this paper. Their structures and compositions were determined and characterized by single-crystal X-ray structure analyses, elemental analyses, and IR spectra. The first protonated Nta complex was found. Structural analyses indicate that the structure greatly changes, while an alternative Nta ligand was protonated in the ((Py)2[GdIII(HNta)(Nta)(H2O)] · 5H2O complex and the(NH4)3[HoIII(Nta)2] complex crystallized as a centrosymmetric structure. By contrast, it is further confirmed that the coordination number and coordinate structure of all trivalent rare-earth metal complexes with aminopolycarboxylic acids mainly depend on the ionic radii and electronic configuration of the central metal ions and their countercations. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Coordination Chemistry Springer Journals

Syntheses and structural analyses of nine-coordinate protonated (Py)2[GdIII(HNta)(Nta)(H2O)] · 5H2O and eight-coordinate (NH4)3[HoIII(Nta)2] complexes

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/lp/springer_journal/syntheses-and-structural-analyses-of-nine-coordinate-protonated-py-2-Z5WyHkqVPw
Publisher
Nauka/Interperiodica
Copyright
Copyright © 2006 by Pleiades Publishing, Inc.
Subject
Chemistry; Inorganic Chemistry; Physical Chemistry
ISSN
1070-3284
eISSN
1608-3318
D.O.I.
10.1134/S1070328406010118
Publisher site
See Article on Publisher Site

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