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Liu J, Sum K, Groizard T, Halet JF, Johnson SA. Theoretical and DFT Study of Atypical Pentanuclear [( iPr 3P)Ni] 5H n ( n = 4, 6, 8) Clusters: What are the Rules? Inorg Chem 2023; 62:20888-20900. [PMID: 38069675 DOI: 10.1021/acs.inorgchem.3c03335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2023]
Abstract
The structure, bonding, and properties of a series of atypical pentanuclear nickel hydride clusters supported by electron-rich iPr3P of the type [(iPr3P)Ni]5Hn (n = 4, 6, 8; H4, H6, H8) and their anionic models where iPr3P are substituted by H- (H4', H6', H8') were investigated by density functional theory (DFT) calculations. All clusters were calculated to adopt a similar square pyramidal core geometry. Calculations indicate singlet ground states with small singlet-triplet gaps for H4 and H6, similar to previously reported experimental values. Molecular orbital theory description clusters were investigated using the simplified model complexes [HNi]5Hn5- (n = 4, 6, 8; H4', H6', H8'). The results show that there are three skeletal electron pairs (SEPs) in H4'. The addition of two molecules of H2 to form H6' and H8' results in the partial or full occupation of two degenerate MOs (e* set) that give two SEPs and one SEP, respectively. Indeed, the occupation of these low-lying weakly antibonding orbitals governs the multielectron chemistry available for these clusters and plays a role in their unique reactivity.
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Affiliation(s)
- Junyang Liu
- Department of Chemistry and Biochemistry, University of Windsor, Sunset Avenue 401, Windsor, Ontario N9B 3P4, Canada
| | - Kethya Sum
- Department of Chemistry and Biochemistry, University of Windsor, Sunset Avenue 401, Windsor, Ontario N9B 3P4, Canada
| | - Thomas Groizard
- Institut des Sciences Chimiques de Rennes (ISCR)─UMR 6226, Université Rennes, CNRS, F-35000 Rennes, France
- Laboratoire de Chimie Quantique, UMR7177, Institut Le Bel, Université de Strasbourg, CNRS, 4 rue Blaise Pascal, F-67000 Strasbourg, France
| | - Jean-François Halet
- Institut des Sciences Chimiques de Rennes (ISCR)─UMR 6226, Université Rennes, CNRS, F-35000 Rennes, France
- CNRS-Saint-Gobain─NIMS, IRL 3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan
| | - Samuel A Johnson
- Department of Chemistry and Biochemistry, University of Windsor, Sunset Avenue 401, Windsor, Ontario N9B 3P4, Canada
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Hogarth G, Kabir SE, Nordlander E. Cluster chemistry in the Noughties: new developments and their relationship to nanoparticles. Dalton Trans 2010; 39:6153-74. [DOI: 10.1039/c000514b] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Hiney RM, Marken F, Raithby PR, Weller AS. Aqueous-organic biphasic redox-chemistry of high-hydride content rhodium clusters: Towards immobilisation of redox-switchable H2 binding materials on a surface. J Organomet Chem 2009. [DOI: 10.1016/j.jorganchem.2009.02.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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