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Potassium chlorido-tris-(hypersil-oxy)aluminate dimer.

ABSTRACT: The tris-(tri-methyl-silylsiloxide) ligand, also known as hypersiloxide, is an extremely bulky group. In an attempt to make the monomeric Al(OSi(SiMe₃)₃)₃, AlCl₃ was combined with 3 equiv. of potassium hypersiloxide. The crystalline product isolated (40% yield), namely di-μ₃-chlorido-bis-[μ₂-tris-(tri-methyl-sil-yl)silanolato]tetra-kis-[tris-(tri-methyl-sil-yl)silanolato]dialuminium-dipotassium, [Al₂K₂Cl₂(C₁₉H₂₇OSi₄)₆], is a KCl adduct of aluminium tris(hypersilyloxide) that is dimerized through a planar K₂Cl₂ ring, with K-Cl distances of 3.1131 (8) and 3.319 (3) Å, and ring angles of 77.41 (2) and 102.60 (2)°. This ring is on an inversion center, and there is no supra-molecular coordination.

SUBMITTER: Purdy AP

PROVIDER: S-EPMC6658975 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature

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Potassium chlorido-tris-(hypersil-oxy)aluminate dimer.

Purdy Andrew P AP Butcher Raymond J RJ

Acta crystallographica. Section E, Crystallographic communications 20190503 Pt 6

The tris-(tri-methyl-silylsiloxide) ligand, also known as hypersiloxide, is an extremely bulky group. In an attempt to make the monomeric Al(OSi(SiMe3)3)3, AlCl3 was combined with 3 equiv. of potassium hypersiloxide. The crystalline product isolated (40% yield), namely di-μ3-chlorido-bis-[μ2-tris-(tri-methyl-sil-yl)silanolato]tetra-kis-[tris-(tri-methyl-sil-yl)silanolato]dialuminium-dipotassium, [Al2K2Cl ...[more]

PMID: 31391951

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