A Ni–Al Hydride Cluster Bearing Site-Differentiated Al Centers: Demonstration of Olefin Insertion and Alkyl Transfer
Year: 2025
Type: article
Abstract: Heterometallic assemblies have been key in uncovering new modes of reactivity, with synergistic effects resulting from main-group metals such as Al drawing particular attention given the diverse ligand modalities accessible to aluminum. Utilizing a reducing Al-dihydride metalloligand LAlH2 and bis (1,5-cyclooctadiene)nickel(0), we report cluster 1, [LNiAl]3H5R (R = 4-cyclooctenyl). The cluster core features Al/Al–H moieties asymmetrically capping a Ni3 plane and coordinating to a Ni–Ni edge. The Al centers display electronically differentiating sites through Al–H addition, olefin insertion, and alkyl transfer. Crystallographic, DFT, and spectroscopic tools establish the presence of three distinct Al centers that adopt sigma-donating alane, sigma-accepting alane, and nonalane character.
Source: Inorganic Chemistry
Language: English
Subfield: Organic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: green
Awards: CAREER: CO2 Reduction byWell-Defined Multimetallic Architectures with Earth-Abundant Metals, MRI: Acquisition of a High-Performance Computing Cluster for Science and Engineering Research at the University of Kansas, G4676450139, Avance II 500 High Performance Digital NMR Spectrometer System, AVIII HD 400 NMR spectrometer to replace existing DRX 400, G6671297155
OpenAlex ID: W4415356723