"Crystal Structure of the Nd, Gd, and Dy Sandwich Complexes Involving 8" by V. A. Igonin, Sergey Lindeman et al.
 

Crystal Structure of the Nd, Gd, and Dy Sandwich Complexes Involving 8-Membered Macrocyclic Phenylsiloxanolate Ligands

Document Type

Article

Language

eng

Publication Date

1-1993

Publisher

Springer

Source Publication

Russian Chemical Bulletin

Source ISSN

1066-5285

Abstract

An X-ray structural investigation of the interaction products of anhydrous trivalent neodymium, gadolynium, and dysprosium chlorides with sodium phenylsiloxanolate was carried out. The synthesized compounds with the general formula Na6[PhSiO2]8M4(μ4-O)[O2SiPh]8 · 10EtOH · 8H2O (M = Nd, Gd, Dy) were found to be isomorphous isostructural sandwich complexes. The macrocyclic octaphenyloctasiloxanolate ligands in the complexes have anall-cis-configuration and are arranged in co-axial antiparallel pairs and coordinate the square planar groups of the four Nd3+, Gd3+, or Dy3+ ions stabilized by an additional central μ4-bridging O2− ligand. Six Na+ counterions form the outer coordination sphere of the complexes such that four of them coordinate the siloxane macrocycle O atoms in pairs in analogy with crown-ether complexes.

Comments

Russian Chemical Bulletin, Vol. 42, No. 1 (January 1993): 176-181. DOI.

Sergey Lindeman was affiliated with Russian Academy of Sciences at the time of publication.

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