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From the same journal

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

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Author(s)

  • Josef Holub
  • Petr Melichar
  • Zdeňka Růžičková
  • Jan Vrána
  • Derek A Wann
  • Jindřich Fanfrlík
  • Drahomír Hnyk
  • Aleš Růžička

Department/unit(s)

Publication details

JournalDalton Transactions
DateAccepted/In press - 11 Sep 2017
DateE-pub ahead of print - 12 Sep 2017
DatePublished (current) - 2017
Issue number40
Volume46
Number of pages6
Pages (from-to)13714-13719
Early online date12/09/17
Original languageEnglish

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 separation 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 (Pn) 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).

Bibliographical note

© The Royal Society of Chemistry 2017

    Research areas

  • Journal Article

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