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Bould J, Londesborough MGS, Passarelli V, Clegg W, Waddell PG, Cvačka J, Macías R. A simple and high-yield route to iridium, rhodium, osmium and ruthenium nido-6-metalladecaborane compounds. Dalton Trans 2021; 50:16751-16764. [PMID: 34762089 DOI: 10.1039/d1dt02971a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a high-yield heterogeneous solid/liquid phase synthetic method to a series of nido-6-metalladecaboranes. The hydridoirida- and hydridorhoda-decaboranes, [6,6,6-H(PPh3)2-nido-6-MB9H13] [M = Ir (1), Rh (2)] are isolatable in 98% yields from the reaction of the square-planar M(I) complexes, [MCl(PPh3)3] (M = Rh, Ir), with K[B9H14]. The same synthetic procedure, but using [MCl(CO)H(PPh3)3] (M = Ru, Os) as metal starting reagents produces the CO-ligated clusters, [6,6,6-(CO)(PPh3)2-nido-6-MB9H13] [M = Ru (3), Os (4)], in yields of 83% and 95%, respectively. These highly convenient syntheses permit the investigation of the reaction chemistry of the new nido-6-metalladecaboranes. Thus, the CO-ligated compounds, 3 and 4, react with the square-planar platinum(II) complex, [PtCl2(PMe2Ph)2], in the presence of potassium triethylborohydride, to give the bimetallic clusters, [1,1,1-(CO)H(PPh3)-isocloso-1-RuB9H8-μ-(1,2)-{Pt(PMe2Ph)2}] (5) and [7,7-(PMe2Ph)2-9,9,9-(CO)(PPh3)2-nido-7,9-PtOsB9H11] (6), and the monometallic nido-5-osamadecaborane, [5,5,5-(PPh3)2(CO)-nido-5-OsB9H13] (7). This reactivity illustrates the potential of polyhedral boron-based clusters as molecular scaffolds ("B-frames") for the construction of multimetallic species. Single-crystal X-ray diffraction analyses have revealed the molecular structures of 3, 5, 6 and 7; the compounds are also studied by multielement NMR spectroscopy, mass spectrometry, IR spectroscopy, and in some cases computationally. Futhermore, the rotation of the {M(X)(PR3)2} moiety (X = H, CO), as PH3-ligated models, is studied by means of DFT-calculated relaxed potential energy surface scans, giving some insight into the lability of the metal-to-borane fragment interaction and of the exo-polyhedral ligands.
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Affiliation(s)
- Jonathan Bould
- Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, Husinec-Řež 250 68, Czech Republic. .,Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogenea (ISQCH), Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, ES-50009 Zaragoza, Spain.
| | - Michael G S Londesborough
- Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, Husinec-Řež 250 68, Czech Republic.
| | - Vincenzo Passarelli
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogenea (ISQCH), Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, ES-50009 Zaragoza, Spain.
| | - William Clegg
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Paul G Waddell
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Josef Cvačka
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, CZ-166 10 Prague 6, Czech Republic
| | - Ramón Macías
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogenea (ISQCH), Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, ES-50009 Zaragoza, Spain.
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Foreman MRSJ, Ma C, Hill AF, Otten NE, Sharma M, Tshabang N, Ward JS. Dihydrobis(methimazolyl)borato complexes of ruthenium and osmium. Dalton Trans 2017; 46:14957-14972. [DOI: 10.1039/c7dt02420g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of Na[H2B(mt)2] (mt = 2-mercapto, 3-methylimidazol-1-yl, methimazolyl) with [Ru(X)Cl(CO)(PPh3)n] (n= 3 X = H;n= 2 BO2C6H4, SiCl3, SiMe3) affords the complexes [Ru(X)(CO)(PPh3){κ2-H,S,S′-H2B(mt)2}].
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Affiliation(s)
| | - Chenxi Ma
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
| | - Anthony F. Hill
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
| | - Natalie E. Otten
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
| | - Manab Sharma
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
| | - Never Tshabang
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
| | - Jas S. Ward
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
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McQuade P, Winter RE, Rath NP, Barton L. Degradation and modification of metallaboranes. Part 4: Synthesis and characterization of a series of hybrid bimetallaborane clusters of the type [2,2,2-(PPh3)2(CO)-nido-2-OsB4H7-3-(BH2PPh2)CxHyPPh2RuCl2(p-cym)]. Inorganica Chim Acta 2005. [DOI: 10.1016/j.ica.2004.10.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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