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Syntheses, crystal structures and properties of a new family of isostructural and isomorphous compounds of type [M(L)(NCS)3] [M = La, Gd, Tb and Dy; L = a neutral hexadentate Schiff base]

Authors
Journal
Polyhedron
0277-5387
Publisher
Elsevier
Publication Date
Volume
29
Issue
13
Identifiers
DOI: 10.1016/j.poly.2010.06.021
Keywords
  • Lanthanides
  • Schiff Bases
  • X-Ray Structures
  • Magnetic Properties

Abstract

Graphical abstract The neutral hexadentate Schiff base N-(1-pyridin-2-yl-phenylidene)-N′-[2-({2-[(1-pyridin-2-yl-phenylidene)amino]ethyl}amino)ethyl]ethane-1,2-diamine (L) was used to synthesize new lanthanide(III) complexes of type [M(L)(NCS) 3] (M = La, 1; Gd, 2; Tb, 3; Dy, 4). Single crystal X-ray diffractometry reveals the tricapped trigonal prismatic structure of all the compounds. Variable-temperature magnetic susceptibility measurements in 2– 4 show the expected χ M T versus T plot for an isolated, mononuclear lanthanide(III) ion with 4f 7, 4f 8 and 4f 9 configurations, respectively following Curie Law.

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