The Structure of a Potassium-Copper Complex with Six-Membered Macrocyclic Ethylsiloxanolate Ligands

Authors

V. A. Igonin, Institute of Organoelement CompoundsFollow
Sergey Lindeman, Marquette UniversityFollow
Yu T. Struchkov, Russian Academy of SciencesFollow
Yulia A. Molodtsova, Russian Academy of Sciences
Olga I. Shchegolikhina, Russian Academy of SciencesFollow
Alexandr A. Zhdanov, Russian Academy of SciencesFollow

Document Type

Article

Language

eng

Publication Date

4-1993

Publisher

Springer

Source Publication

Russian Chemical Bulletin

Source ISSN

1066-5285

Abstract

The structure of K₂{[EtSiO₂]₆K₂Cu₄[O₂SiEt]₆} · 4n-BuOH, a novel mixed sandwich-like complex of K⁺ and Cu²⁺ with two 6-membered macrocyclic ethylsiloxanolate ligands, was established by means of X-ray study. The ligands have an all-cis configuration and a crown conformation. Four Cu²⁺and two K⁺ ions form a planar hexagon sandwiched between antiparallel coaxial macrocyclic ligands. The K⁺ ions occupy two opposite apices of the hexagon. The Cu²⁺ ions have square-planar coordination with four siloxanolate O_M atoms, while the K⁺ ions, are coordinated with two O atoms of the solvating butanol molecules, in addition to four O_M atoms. The electric neutrality of the whole complex is due to the two outer-sphere K⁺ counter-ions, each located over one of the two siloxanolate macrocycles, i.e., over the «decks» of the sandwich and coordinated with endocyclic siloxane O_Si atoms, as in crown-ether complexes.

Comments

Russian Chemical Bulletin, Vol. 42, No. 4 (April 1993): 718-722. DOI.

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

Recommended Citation

Igonin, V. A.; Lindeman, Sergey; Struchkov, Yu T.; Molodtsova, Yulia A.; Shchegolikhina, Olga I.; and Zhdanov, Alexandr A., "The Structure of a Potassium-Copper Complex with Six-Membered Macrocyclic Ethylsiloxanolate Ligands" (1993). Chemistry Faculty Research and Publications. 688.
https://epublications.marquette.edu/chem_fac/688