Jump to main content
Jump to site search


A novel stibacarbaborane cluster with adjacent antimony atoms exhibiting unique pnictogen bond formation that dominates its crystal packing

Abstract

We have prepared nido-7,8,9,11-Sb2C2B7H9, the first cluster with simultaneous Sb-B, Sb-C and Sb-Sb atom pairs with interatomic separations with magnitudes that approach the respective sums of covalent radii. However, the length of the Sb-Sb interaction in this cluster is slightly less than the sum of the covalent radii. Quantum chemical analysis has revealed that the crystal packing of nido-7,8,9,11-Sb2C2B7H9 is predominantly dictated by pnictogen bonding, an unconventional σ-hole interaction. Indeed, the interaction energy of a very strong Sb2···H-B Pn-bond in the nido-7,8,9,11-Sb2C2B7H9 dimer exceeds –6.0 kcal mol–1. This is a very large value and is comparable to the strengths of known Pn-bonds in Cl3Pn···π complexes (Pn = As, Sb).

Back to tab navigation

Supplementary files

Publication details

The article was received on 02 Aug 2017, accepted on 11 Sep 2017 and first published on 12 Sep 2017


Article type: Paper
DOI: 10.1039/C7DT02845H
Citation: Dalton Trans., 2017, Accepted Manuscript
  •   Request permissions

    A novel stibacarbaborane cluster with adjacent antimony atoms exhibiting unique pnictogen bond formation that dominates its crystal packing

    J. Holub, P. Melichar, Z. Ruzickova, J. Vrana, D. Wann, J. Fanfrlik, D. Hnyk and A. Růžička, Dalton Trans., 2017, Accepted Manuscript , DOI: 10.1039/C7DT02845H

Search articles by author

Spotlight

Advertisements