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Boron Beyond the Icosahedral Barrier: A 16-Vertex Metallaborane


  • This work was supported by the Department of Science and Technology, DST (Project No. SR/SI/IC-13/2011), New Delhi, India. Computational facilities from the IIT Madras computer center are gratefully acknowledged. D.K.R. is grateful to Council of Scientific and Industrial Research (CSIR), New Delhi, India, for Research Fellowship. We also thank the Center for Environmental Science and Technology, University of Notre Dame, for the mass analysis, supported by the NSF under CHE-0741793.


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A neutral metallaborane comprising a Rh4B12 polyhedron with icosioctahedron geometry with 16 vertices and 28 triangular faces was prepared (see structure; Rh: red, B: green). The cage has the shape of a 12-membered truncated tetrahedron with four capped hexagonal faces.

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