Sterically induced opening of a closo carbametallaborane: synthesis and characterisation of 1,2-Ph2-3-(η-C5Me5)-3,1,2-pseudocloso-RhC2B9H9

Zoë G. Lewis; Alan J. Welch

doi:10.1016/0022-328X(92)83273-K

Sterically induced opening of a closo carbametallaborane: synthesis and characterisation of 1,2-Ph₂-3-(η-C₅Me₅)-3,1,2-pseudocloso-RhC₂B₉H₉

Zoë G. Lewis^*, Alan J. Welch

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

42 Citations (Scopus)

Abstract

The structure of the cage in 1,2-Ph₂-3-Cp-3,1,2-RhC₂B₉H₉ is distorted from icosahedral by repulsion between the two phenyl rings, forced to lie nearly coplanar by the presence of the Cp ligand. Thus the C(1) ⋯ C(2) distance is 2.51 Å and B(6) approaches to within 2.92 Å of Rh(3). The nature of the distortion, which engenders the description pseudocloso for the RhC₂B₉ polyhedron, is discussed in relation to ¹¹B NMR chemical shifts and to recent controversy over iso-closo versus hyper-closo descriptors.

Original language	English
Pages (from-to)	C45-C50
Number of pages	6
Journal	Journal of Organometallic Chemistry
Volume	430
Issue number	3
DOIs	https://doi.org/10.1016/0022-328X(92)83273-K
Publication status	Published - 16 Jun 1992

ASJC Scopus subject areas

Biochemistry
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry
Materials Chemistry

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title = "Sterically induced opening of a closo carbametallaborane: synthesis and characterisation of 1,2-Ph2-3-(η-C5Me5)-3,1,2-pseudocloso-RhC2B9H9",

abstract = "The structure of the cage in 1,2-Ph2-3-Cp-3,1,2-RhC2B9H9 is distorted from icosahedral by repulsion between the two phenyl rings, forced to lie nearly coplanar by the presence of the Cp ligand. Thus the C(1) ⋯ C(2) distance is 2.51 {\AA} and B(6) approaches to within 2.92 {\AA} of Rh(3). The nature of the distortion, which engenders the description pseudocloso for the RhC2B9 polyhedron, is discussed in relation to 11B NMR chemical shifts and to recent controversy over iso-closo versus hyper-closo descriptors.",

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T1 - Sterically induced opening of a closo carbametallaborane: synthesis and characterisation of 1,2-Ph2-3-(η-C5Me5)-3,1,2-pseudocloso-RhC2B9H9

AU - Lewis, Zoë G.

AU - Welch, Alan J.

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N2 - The structure of the cage in 1,2-Ph2-3-Cp-3,1,2-RhC2B9H9 is distorted from icosahedral by repulsion between the two phenyl rings, forced to lie nearly coplanar by the presence of the Cp ligand. Thus the C(1) ⋯ C(2) distance is 2.51 Å and B(6) approaches to within 2.92 Å of Rh(3). The nature of the distortion, which engenders the description pseudocloso for the RhC2B9 polyhedron, is discussed in relation to 11B NMR chemical shifts and to recent controversy over iso-closo versus hyper-closo descriptors.

AB - The structure of the cage in 1,2-Ph2-3-Cp-3,1,2-RhC2B9H9 is distorted from icosahedral by repulsion between the two phenyl rings, forced to lie nearly coplanar by the presence of the Cp ligand. Thus the C(1) ⋯ C(2) distance is 2.51 Å and B(6) approaches to within 2.92 Å of Rh(3). The nature of the distortion, which engenders the description pseudocloso for the RhC2B9 polyhedron, is discussed in relation to 11B NMR chemical shifts and to recent controversy over iso-closo versus hyper-closo descriptors.

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Sterically induced opening of a closo carbametallaborane: synthesis and characterisation of 1,2-Ph₂-3-(η-C₅Me₅)-3,1,2-pseudocloso-RhC₂B₉H₉

Abstract

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