The Phosphonium Ion [Cy3PCHCl2]+: Synthesis and Properties

Spang, Nils; Müller, Mat­thias; Buchner, Magnus R.

doi:10.1002/ejic.201800532

Cited by 3 publications

(1 citation statement)

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“…Hexachlorodiberyllate 128 b dissociates in solution to the threefold‐coordinated monomeric trichloroberyllate 62 b . The analogous reactions with tricyclohexyl(dichloromethyl)phosphonium chloride lead to the respective tetrachloroberyllate 129 a and trichloroberyllate 62 a . The latter is also present in the solid state, which allowed for the first crystallographic examination of a threefold‐coordinated beryllium species without sterically very demanding ligands .…”

Section: Anionic Beryllium Compoundsmentioning

confidence: 99%

Recent Contributions to the Coordination Chemistry of Beryllium

Buchner

2019

Chemistry A European J

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Given the alleged extreme toxicity of beryllium and its compounds, it is the least investigated nonradioactive element. However, beryllium exhibits unique properties among the elements and therefore the related coordination chemistry is unprecedented. With the emergence of s‐block catalysis and the introduction of low‐valent magnesium complexes as versatile reducing agents, the interest in related beryllium compounds also has increased. Therefore, some quite remarkable progress on the coordination and organometallic chemistry of beryllium has been made in the last two decades. This Minireview article gives an oversight over the relatively recent developments in this field of beryllium research. An emphasis is placed on the correlation between the structure and reactivity of the described compounds.

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Section: Anionic Beryllium Compoundsmentioning

confidence: 99%

Recent Contributions to the Coordination Chemistry of Beryllium

Buchner

2019

Chemistry A European J

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Formation and Properties of the Trichloroberyllate Ion

et al. 2018

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The activation of C-Cl bonds in dichloromethane and chloroform was observed by BeCl in the presence of PMe and PCy. This leads to the formation of [MePCHCl]Cl and [CyPCHCl][BeCl]. The latter compound is the first example of a tricoordinated beryllium species with nonbulky ligands and proof of the existence and stability of the long-predicted [BeCl] ion. In analogy to the isoelectronic BCl, the trichloroberyllate anion exhibits Lewis acidic behavior toward electron-pair donors and was probed for the electronic and steric influence of the Lewis base. [BeCl] can also act as a chloride ion donor or acceptor, leading to the formation of neutral phosphane adducts to BeCl and [BeCl]. The existing equilibria between these species were investigated and showed high chloride mobility.

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