Complexes containing discrete In–Pn bonds (Pn = Pnictide, Sb/Bi)

Mathew D. Anker, Andrea O'Reilly, Claire L. McMullin, Martyn P. Coles

Research output: Contribution to journalArticlepeer-review


The potassium indyl K[In(NONDipp)] ([NONDipp]2– = [O(SiMe2NDipp)2]2–, Dipp = 2,6-iPr2C6H3) reacts with Pn(NONtBu)Cl (Pn = pnictide = Sb, Bi) to afford complexes containing In–Pn bonds. X-ray crystallography confirms monomeric species with unsupported (discrete) In–Sb and In–Bi bonds between pyramidal pnictide atoms and distorted trigonal planar indium atoms. Computational analysis confirms that the Pn centres retain a lone-pair of electrons and show that the In–Pn covalent bond is formed from the overlap of a s-type orbital from indium with a p-type orbital from the pnictide.

Original languageEnglish
Article number116695
Early online date16 Oct 2023
Publication statusPublished - 1 Dec 2023

Bibliographical note

Funding Information:
C.L.M. acknowledges funding from the Royal Society of Chemistry (E21-8355738114). This research made use of the Anatra High Throughput Computing (HTC) Cluster at the University of Bath. The authors gratefully acknowledge the University of Bath’s Research Computing Group ( for their support in this work.


  • Antimony
  • Bismuth
  • Indium
  • Main group complexes
  • Metal–metal bond

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry


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  • Anatra HTC cluster

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