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American Chemical Society, Inorganic Chemistry, 14(51), p. 7472-7483, 2012

DOI: 10.1021/ic201978n

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TM<sub>7</sub>TM′<sub>6</sub>B<sub>8</sub>(TM= Ta, Nb;TM′ = Ru, Rh, Ir): New Compounds with [B<sub>6</sub>] Ring Polyanions

Journal article published in 2012 by Qiang Zheng, Miroslav Kohout, Roman Gumeniuk ORCID, Nikolay Abramchuk, Horst Borrmann, Yurii Prots, Ulrich Burkhardt, Walter Schnelle, Lev Akselrud, Hui Gu, Andreas Leithe-Jasper, Yuri Grin
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

The ternary boron compounds TM(7)TM'(6)B(8) (TM = Ta, Nb; TM' = Ru, Rh, Ir) were prepared by high-temperature thermal treatment of mixtures of the elements. An analysis of the chemical bonding by the electron density/electron localizability approach reveals formation of covalently bonded polyanions [B(6)] and [TM'(6)B(2)]. The cationic part of the structure contains separated TM cations. In agreement with the chemical bonding analysis and band structure calculations, all TM(7)TM'(6)B(8) compounds are metallic Pauli-paramagnets (TM' = Ru, Rh) or diamagnets (TM' = Ir).