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Trimetallaborides as starting points for the syntheses of large metal-rich molecular borides and clusters
journal contribution
posted on 2023-06-08, 22:32 authored by Holger Braunschweig, William C Ewing, Sundargopal Ghosh, Thomas Kramer, James D Mattock, Sebastian Östreicher, Alfredo VargasAlfredo Vargas, Christine WernerTreatment of an anionic dimanganaborylene complex ([{Cp(CO)2Mn}2B]–) with coinage metal cations stabilized by a very weakly coordinating Lewis base (SMe2) led to the coordination of the incoming metal and subsequent displacement of dimethylsulfide in the formation of hexametalladiborides featuring planar four-membered M2B2 cores (M = Cu, Au) comparable to transition metal clusters constructed around four-membered rings composed solely of coinage metals. The analogies between compounds consisting of B2M2 units and M4 (M = Cu, Au) units speak to the often overlooked metalloid nature of boron. Treatment of one of these compounds (M = Cu) with a Lewis-basic metal fragment (Pt(PCy3)2) led to the formation of a tetrametallaboride featuring two manganese, one copper and one platinum atom, all bound to boron in a geometry not yet seen for this kind of compound. Computational examination suggests that this geometry is the result of d10-d10 dispersion interactions between the copper and platinum fragments.
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- Published
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- Published version
Journal
Chemical ScienceISSN
2041-6539Publisher
Royal Society of ChemistryExternal DOI
Volume
7Page range
109-116Department affiliated with
- Chemistry Publications
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- Yes
Peer reviewed?
- Yes
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2015-11-02First Open Access (FOA) Date
2015-11-02First Compliant Deposit (FCD) Date
2015-11-02Usage metrics
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