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1. Low oxidation state silicon clusters – synthesis and structure of [NHCᴰⁱᵖᵖCu(η⁴-Si₉)]³⁻

Author:
Geitner, Felix S.; Fässler, Thomas F.
Source:
Chemical communications 2017 v.53 no.96 pp. 12974-12977
ISSN:
1364-548X
Subject:
acetonitrile; ambient temperature; ammonia; copper; crystal structure; crystallization; dissociation; electrospray ionization mass spectrometry; gold; ligands; nuclear magnetic resonance spectroscopy; oxidation; potassium; pyridines; rubidium; salts; silicon; silver
Abstract:
... The reaction of NHCᴰⁱᵖᵖCuCl with the silicide phases A₁₂Si₁₇ (A: K, K/Rb, Rb) in NH₃(l) yields [NHCᴰⁱᵖᵖCu(η⁴-Si₉)]³⁻ (1) as only the third example of a substituted [Si₉] cluster. The corresponding salts A₃[A(2.2.2-crypt)]₃[NHCᴰⁱᵖᵖCu(η⁴-Si₉)]₂·26NH₃ (A: K (1a), K/Rb (1b), Rb (1c)) crystallize isostructurally in the space group P1̄ and have been characterized by single crystal structure determinatio ...
DOI:
10.1039/c7cc07995h