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Pentamethylcyclopentadienylrhodaborane chemistry. Part 1. High-yield planned synthesis, molecular structure, and nuclear magnetic resonance properties of the ten-vertex nido-6-rhodadecaborane [(η<sup>5</sup>-C<sub>5</sub>Me<sub>5</sub>)RhB<sub>9</sub>H<sub>13</sub>]
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1986
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Inorganic ChemistryChemical EngineeringEngineeringHigh-yield Rhodaborane SynthonCoordination ComplexSpace Group PbcaStructure ElucidationPentamethylcyclopentadienylrhodaborane ChemistryOrganometallic CatalysisChemistryNido-decaborane AnalogueCrystallographyCrystal Structure DesignInorganic SynthesisInorganic Compound
The dimeric pentamethylcyclopentadienylrhodium complex [{Rh(η5-C5Me5)Cl2}2] is potentially a high-yield rhodaborane synthon, and reacts quantitatively with arachno-[B9H14]– to give [6-(η5C5Me5)-nido-6-RhB9H13] as an orange-red air-stable solid, which has been examined by X-ray crystallography. Crystals are orthorhombic, space group Pbca, with a= 1 977.2(3), b= 1 440.1 (2), c= 2 450.1(4) pm, and Z= 16; the final R factor is 0.0429 for 3 678 observed reflections. N.m.r. data are also presented and briefly discussed; these together with the molecular structure confirm the complex to be a nido-decaborane analogue in which the HB(6) unit is replaced by an isolobal and isoelectronic Rh(η5-C5Me5) centre.