Expansion of iridaborane clusters by addition of monoborane. Novel metallaboranes and mechanistic detail

Dalton Transactions : an International Journal of Inorganic Chemistry
S GhoshT P Fehlner

Abstract

This work reports the results of a thermally driven cluster expansion of arachno-1-{eta5-C5Me5IrH2}B3H7, 1, with BH3.THF. In addition to the previously reported product, arachno-1-{eta5-C5Me5IrH}B4H9, 2, formed at lower temperatures, reaction at 100 degrees C permits the isolation of four new iridaboranes. Two products, nido-1-(eta5-C5Me5Ir)B5H9, 3, and nido-3-(eta5-C5Me5Ir)B9H13, 4, contain a single Ir atom and five and nine framework boron atoms, respectively. One, nido-3,4-(eta5-C5Me5Ir)2B8H12, 5, contains two Ir atoms and eight framework boron atoms. Their structures are predicted by the electron counting rules to be a nido-iridahexaborane, 3, nido-iridadecaborane, 4, and nido-diiridadecaborane, 5. The accuracy of these predictions in each case is established experimentally by spectroscopic characterization in solution and structure determinations in the solid state. A less stable metallaborane has been identified and the available spectroscopic and crystallographic information are consistent with the formulation nido-3,4-(eta5-C5Me5Ir)2B8H13(eta-BH2), 6, i.e., a species containing an exopolyhedral bridging BH group. These new observations, along with earlier ones on ruthenaborane cluster systems, are used to fully define a...Continue Reading

References

Feb 1, 1975·European Journal of Pharmacology·P A Shore, R L Dorris
Mar 6, 1981·Science·R Hoffmann

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Citations

Sep 25, 2012·Inorganic Chemistry·Dipak Kumar RoySundargopal Ghosh
Jan 27, 2016·Chemical Communications : Chem Comm·Rosmita BorthakurSundargopal Ghosh
Dec 17, 2015·Journal of the American Chemical Society·Nicole ArnoldWilliam C Ewing
Nov 12, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·Subrat Kumar BarikSundargopal Ghosh
May 4, 2016·Inorganic Chemistry·Dipak Kumar RoySundargopal Ghosh
May 18, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·Adrian M V BrânzanicR Bruce King
Oct 19, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·Rongala RamalakshmiSundargopal Ghosh
Jan 21, 2017·Inorganic Chemistry·Rosmita BorthakurSundargopal Ghosh
Apr 27, 2017·Chemistry : a European Journal·Koushik SahaSundargopal Ghosh
May 24, 2019·Chemical Society Reviews·Tian JianLai-Sheng Wang
Sep 28, 2017·Chemistry : a European Journal·Koushik SahaSundargopal Ghosh
Jul 29, 2021·Inorganic Chemistry·Chandan NandiSundargopal Ghosh
Dec 12, 2018·Inorganic Chemistry·Mohammad ZafarSundargopal Ghosh
Oct 31, 2020·Inorganic Chemistry·Benson JosephSundargopal Ghosh

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