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Ruthenium(II) Complexes of closo-Dodecaboranyl Anions and the Molecular Structure of the pileo Thirteen-vertex Ruthenaborane

DOI: 10.1039/DT9870000451

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 451 - 456 (1987)

Update date:2022-08-06

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Authors:

Elrington, MargaretElrington, Margaret

Greenwood, Norman N.Greenwood, Norman N.

Kennedy, John D.Kennedy, John D.

Thornton-Pett, MarkThornton-Pett, Mark

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Article abstract of DOI:10.1039/DT9870000451

Reaction of Na2 with gives a 10percent yield of the lemon-yellow air-stable covalent complex <(PMe2Ph)3RuB12H12>, characterized by elemental analysis and multielement nuclear magnetic single- and multiple-resonance spectroscopy.Reaction of 2 and results in the formation of <(PPh3)2ClRuB12H11(NEt3)> as an orange-red air-stable compound (30percent), characterized by single-crystal X-ray diffraction analysis as well as n.m.r. spectroscopy.The solvate <(PPh3)2ClRuB12H11(NEt3)>.CH2Cl2 forms monoclinic crystals, with a = 2 246.3(2), b = 1 189.2(2), c = 1 972.5(2) pm, β = 111.04(1) deg, Z = 4, an space group P21/n.The compounds may formally be regarded either as ruthenium(II) complexes of closo-dodecaboranyl ligands which bind in a trihapto tridentate mode to the octahedral metal centres via three two-electron three-centre B-H-Ru bridge bonds, or as 13-vertex pileo 2n-electron metallaborane cluster species which have capped closed deltahedral cluster geometries.

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