Dataset Information

Exploring Cu/Al cluster growth and reactivity: from embryonic building blocks to intermetalloid, open-shell superatoms.

ABSTRACT: Cluster growth reactions in the system [Cu₅](Mes)₅ + [Al₄](Cp*)₄ (Mes = mesitylene, Cp* = pentamethylcyclopentadiene) were explored and monitored by in situ LIFDI-MS and ¹H-NMR. Feedback into experimental design allowed for an informed choice and precise adjustment of reaction conditions and led to isolation of the intermetallic cluster [Cu₄Al₄](Cp*)₅(Mes) (1). Cluster 1 reacts with excess 3-hexyne to yield the triangular cluster [Cu₂Al](Cp*)₃ (2). The two embryonic [Cu₄Al₄](Cp*)₅(Mes) and [Cu₂Al](Cp*)₃ clusters 1 and 2, respectively, were shown to be intermediates in the formation of an inseparable composite of the closely related clusters [Cu₇Al₆](Cp*)₆ (3), [HCu₇Al₆](Cp*)₆ (3H) and [Cu₈Al₆](Cp*)₆ (4), which just differ by one Cu core atom. The radical nature of the open-shell superatomic [Cu₇Al₆](Cp*)₆ cluster 3 is reflected in its reactivity towards addition of one Cu core atom leading to the closed shell superatom [Cu₈Al₆](Cp*)₆ (4), and as well by its ability to undergo σ(C-H) and σ(Si-H) activation reactions of C₆H₅CH₃ (toluene) and (TMS)₃SiH (TMS = tris(trimethylsilyl)).

SUBMITTER: Schutz M

PROVIDER: S-EPMC8132940 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature

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Exploring Cu/Al cluster growth and reactivity: from embryonic building blocks to intermetalloid, open-shell superatoms.

Schütz Max M Gemel Christian C Muhr Maximilian M Jandl Christian C Kahlal Samia S Saillard Jean-Yves JY Fischer Roland A RA

Chemical science 20210401 19

Cluster growth reactions in the system [Cu5](Mes)5 + [Al4](Cp*)4 (Mes = mesitylene, Cp* = pentamethylcyclopentadiene) were explored and monitored by in situ LIFDI-MS and 1H-NMR. Feedback into experimental design allowed for an informed choice and precise adjustment of reaction conditions and led to isolation of the intermetallic cluster [Cu4Al4](Cp*)5(Mes) (1). Cluster 1 reacts with exces ...[more]

PMID: 34040734

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Dataset Information

Exploring Cu/Al cluster growth and reactivity: from embryonic building blocks to intermetalloid, open-shell superatoms.

Publications

Exploring Cu/Al cluster growth and reactivity: from embryonic building blocks to intermetalloid, open-shell superatoms.

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