Ein elektronenpräziser μ<sub>3</sub>‐Boridkomplex mit tetraedrischer Struktur

Treatment of a dirhodium analogue of pentaborane(9), [(Cp*Rh) 2 B 3 H 7 ] (nido-1; Cp* = η 5 -C 5 Me 5 ), with [Fe 2 (CO) 9 ] at room temperature led to the formation of [(Cp*Rh) 2 -Fe(CO) 3 (μ-CO)B 3 H 2 Cl] (2) and the metal-rich metallaborane [(Cp*Rh) 2 Fe(CO) 3 Fe(CO) 2 (μ-CO) 2 B 2 H 2 ] (3). When the same reaction was carried out at moderate temperature, two metal-rich metallaboranes, [(Cp*Rh) 3 Fe(CO) 2 (μ 3 -CO) 2 B 2 HX] 4 (X = H) and 5 (X = Cl), and a heterometallic μ 9 -boride cluster, [(Cp*Rh) 3 -(RhCO) 3 Fe(CO) 3 (μ-CO) 3 B 3 H 2 ] (6), were obtained. Compounds 4 and 5 can be viewed as cubane clusters with 62 cluster valence [a] Scheme 1. Synthesis of heterometallic clusters 2-8 and mixed-metal clusters 10 and 11. display a single resonance for the two B-H t protons at δ = 9.16 ppm and a downfield chemical shift at δ = 111.9 ppm for the two chemically inequivalent boron atoms. The IR spectra of 2 and 3 show characteristic bands for B-H t at 2486 and 2454 cm -1 , respectively, which is consistent with previously reported compounds. [15][16][17][18] In addition, the IR spectra show absorption bands for the terminal and bridging carbonyl ligands.The structural compositions of both 2 and 3 were confirmed by single-crystal X-ray crystallographic analysis (Figure 1). Crystals of 2 and 3 were grown by the slow evaporation of hexane under argon. The core structures (octahedral) of 2 and 3 are very similar to those of [(μ 3 -CO)(η 5 of 3 consists of two iron and two boron atoms and the axial positions are occupied by two rhodium atoms. All the metalmetal distances in 3, for example, Fe1-Fe2 of 2.581(3) Å, Fe1-Eur.

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Metal‐Rich Metallaboranes: Structures and Geometries of Heterometallic µ₉‐Boride Clusters

Bhattacharyya

Yuvaraj

Chanda

et al. 2018

Eur J Inorg Chem

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Ein elektronenpräziser μ₃‐Boridkomplex mit tetraedrischer Struktur

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References 72 publications

Metal‐Rich Metallaboranes: Structures and Geometries of Heterometallic µ₉‐Boride Clusters

Metal‐Rich Metallaboranes: Structures and Geometries of Heterometallic µ₉‐Boride Clusters

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Ein elektronenpräziser μ3‐Boridkomplex mit tetraedrischer Struktur

Cited by 1 publication

References 72 publications

Metal‐Rich Metallaboranes: Structures and Geometries of Heterometallic µ9‐Boride Clusters

Metal‐Rich Metallaboranes: Structures and Geometries of Heterometallic µ9‐Boride Clusters

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Ein elektronenpräziser μ₃‐Boridkomplex mit tetraedrischer Struktur

Metal‐Rich Metallaboranes: Structures and Geometries of Heterometallic µ₉‐Boride Clusters

Metal‐Rich Metallaboranes: Structures and Geometries of Heterometallic µ₉‐Boride Clusters