Some crystal growth strategies for diffraction structure studies of iridium complexes

Liam S. Sharninghausen, Shashi Bhushan Sinha, Dimitar Y. Shopov, Gary W. Brudvig, Robert H. Crabtree

Research output: Contribution to journalReview articlepeer-review


We cover our recent work on low and high oxidation state as well as cluster Ir complexes where a wide variety of standard crystallization methods failed. For Ir(I), butane-1,4-diol can promote crystallization by hydrogen bonding to unpartnered basic hydrogen bonding groups on the complex. Two gel methods proved useful in the cluster cases. For the [Ir4(IMe)8H9]3+ cluster cation, we find the Keggin cluster anion [PW12O40]3− is most suitable. The related [Ir4(IMe)8(H)10][B(Arf)4]2 even gave large enough crystals (0.9 × 0.4 × 0.1 mm) for neutron diffraction, needed to locate the hydrides. For Ir(IV) and (V), CCl4 proves a useful precipitant that also tends to incorporate in the lattice. Finally, Ir(V) complexes were crystallized directly from the electrosynthetic solutions.

Original languageEnglish
Pages (from-to)183-188
Number of pages6
JournalInorganica Chimica Acta
Publication statusPublished - Aug 1 2018

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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