Synthesis and structural determination of polynuclear nine-coordinate {K[SmIII(Egta)] • H2O} n and mononuclear eight-coordinate (NH4)[LuIII(Egta)] • H2O

Synthesis and structural determination of polynuclear nine-coordinate {K[SmIII(Egta)] • H2O} n... Two novel rare earth metal coordination compounds, {K[SmIII(Egta)] · H2O} n (I) (H4Egta = ethyleneglycol-bis(2-aminoethylether)-N,N,N',N'-tetraacetic acid) and (NH4)[LuIII(Egta)] · H2O (II), have been successfully synthesized through direct heating reflux and characterized by FT-IR spectroscopy, thermal analysis and single-crystal X-ray diffraction techniques (ÑIF file CCDC nos. 966211 (I) and 966210 (II)). Complex I shaps a polynuclear and nine-coordinate structure with distorted monocapped square antiprismatic (MC-SAP) conformation and crystallizes in the monoclinic crystal system with space group C2/c. The central Sm3+ ion is coordinated by two nitrogens and six oxygens from one octadentate Egta ligand. Meanwhile, one oxygen atom comes from one carboxylic group of the neighboring Egta ligand, forming one dimensional unlimited polynuclear complexes. The cell dimensions are: a = 38.253(3), b = 13.7769(11), c = 8.7652(7) Å, β = 100.696(2)° and V = 4539.0(6) Å3. Complex (II) adopts a mononuclear structure with eight-coordinate pseudo-SAP conformation and crystallizes in the monoclinic crystal system with space group P21/c. The central Lu3+ ion is coordinated by two nitrogens and six oxygens all from one octadentate Egta ligand. The crystal data are as follows: a = 13.9817(10), b = 9.7392(6), c = 14.6305(13) Å, β = 110.267(9)° and V = 1868.9(2) Å3. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Coordination Chemistry Springer Journals

Synthesis and structural determination of polynuclear nine-coordinate {K[SmIII(Egta)] • H2O} n and mononuclear eight-coordinate (NH4)[LuIII(Egta)] • H2O

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Publisher
Springer Journals
Copyright
Copyright © 2015 by Pleiades Publishing, Ltd.
Subject
Chemistry; Physical Chemistry; Inorganic Chemistry
ISSN
1070-3284
eISSN
1608-3318
D.O.I.
10.1134/S1070328415100036
Publisher site
See Article on Publisher Site

Abstract

Two novel rare earth metal coordination compounds, {K[SmIII(Egta)] · H2O} n (I) (H4Egta = ethyleneglycol-bis(2-aminoethylether)-N,N,N',N'-tetraacetic acid) and (NH4)[LuIII(Egta)] · H2O (II), have been successfully synthesized through direct heating reflux and characterized by FT-IR spectroscopy, thermal analysis and single-crystal X-ray diffraction techniques (ÑIF file CCDC nos. 966211 (I) and 966210 (II)). Complex I shaps a polynuclear and nine-coordinate structure with distorted monocapped square antiprismatic (MC-SAP) conformation and crystallizes in the monoclinic crystal system with space group C2/c. The central Sm3+ ion is coordinated by two nitrogens and six oxygens from one octadentate Egta ligand. Meanwhile, one oxygen atom comes from one carboxylic group of the neighboring Egta ligand, forming one dimensional unlimited polynuclear complexes. The cell dimensions are: a = 38.253(3), b = 13.7769(11), c = 8.7652(7) Å, β = 100.696(2)° and V = 4539.0(6) Å3. Complex (II) adopts a mononuclear structure with eight-coordinate pseudo-SAP conformation and crystallizes in the monoclinic crystal system with space group P21/c. The central Lu3+ ion is coordinated by two nitrogens and six oxygens all from one octadentate Egta ligand. The crystal data are as follows: a = 13.9817(10), b = 9.7392(6), c = 14.6305(13) Å, β = 110.267(9)° and V = 1868.9(2) Å3.

Journal

Russian Journal of Coordination ChemistrySpringer Journals

Published: Oct 11, 2015

References

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