Synthesis, Characterization and Crystal Structure of Complexes of Rare Earth Picrates with N,N,N',N',N",N"-Hexaisopropyl- 2,2',2"-[nitrilotris(ethyleneoxy)]triacetamide (L)

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Title:Synthesis, Characterization and Crystal Structure of Complexes of Rare Earth Picrates with N,N,N',N',N",N"-Hexaisopropyl- 2,2',2"-[nitrilotris(ethyleneoxy)]triacetamide (L)
Creators:
Fan, Jun
Liu, Wei-Sheng
Tang, Ning
Tang, Yu
Tan, Min-Yu
Yu, Kai-Bei
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 67, 5, pp. 557-568
Uncontrolled Keywords:Yttrium complex, Rare earth picrate complexes, Tripodal ligands, Lanthanide complexes, Chelates, Crystal structure determination, Samarium complex

Abstract

A new tripodal compound, <i>N,N,N',N',N",N"</i>-hexaisopropyl-2,2',2<i>"</i>-[nitrilotris(ethyleneoxy)]triacetamide (L) was synthesized. Its complexes with rare earth picrates, [M(Pic)L](Pic)<sub>2</sub>·H<sub>2</sub>O (M = La, Pr, Nd, Sm, Eu, Tb, Er, Yb, Y), have been prepared and characterized by elemental analysis, thermal analysis, conductivity measurements, IR and <sup>1</sup>H NMR spectra. The crystal structures of two complexes [M(Pic)L](Pic)<sub>2</sub> (M = Sm, Y) have been determined, which reveal that the M(III) ions (M = Sm, Y) are encapsulated by the three chains of the ligand and nine-coordinated by the central nitrogen atom, three ether oxygen atoms and three carbonyl oxygen atoms from the ligand, and two oxygen atoms from the didentate coordinated picrate ion in both cases. The results show that L acts as a heptadentate ligand, forming a cup-like coordination structure to accommodate the rare earth ion. Both rare earth complexes have the similar coordinate modes in spite of different unit cells. <p>

Title:Synthesis, Characterization and Crystal Structure of Complexes of Rare Earth Picrates with N,N,N',N',N",N"-Hexaisopropyl- 2,2',2"-[nitrilotris(ethyleneoxy)]triacetamide (L)
Creators:
Fan, Jun
Liu, Wei-Sheng
Tang, Ning
Tang, Yu
Tan, Min-Yu
Yu, Kai-Bei
Uncontrolled Keywords:Yttrium complex, Rare earth picrate complexes, Tripodal ligands, Lanthanide complexes, Chelates, Crystal structure determination, Samarium complex
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:67
Number:5
Page Range:pp. 557-568
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc20020557UNSPECIFIED
ID Code:1941
Item Type:Article
Deposited On:06 Feb 2009 17:14
Last Modified:06 Feb 2009 16:14

Citation

Fan, Jun; Liu, Wei-Sheng; Tang, Ning; Tang, Yu; Tan, Min-Yu; Yu, Kai-Bei (2002) Synthesis, Characterization and Crystal Structure of Complexes of Rare Earth Picrates with N,N,N',N',N",N"-Hexaisopropyl- 2,2',2"-[nitrilotris(ethyleneoxy)]triacetamide (L). Collection of Czechoslovak Chemical Communications, 67 (5). pp. 557-568. ISSN 0010-0765

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