Synthesis and reactions of N-heterocycle functionalised variants of heterometallic {Cr7Ni} rings

Dalton Trans. 2016 Jan 28;45(4):1638-47. doi: 10.1039/c5dt04062k. Epub 2015 Dec 22.

Abstract

Here we present a series of linked cage complexes of functionalised variants of the octametallic ring {Cr7Ni} with the general formula [(n)Pr2NH2][Cr7NiF8(O2C(t)Bu)15(O2CR)], where HO2CR is a N-heterocycle containing carboxylic acid. These compounds are made by reacting [(n)Pr2NH2][Cr7NiF8(O2C(t)Bu)15(O2CR)] with a variety of simple metal salts and metal dimers. The carboxylic acids studied include iso-nicotinic acid, 3-(4-pyridyl)acrylic acid and 4-pyridazine carboxylic acid. These new linked cage complexes have been studied structurally and the study highlights the versatility of functionalised {Cr7Ni} as a Lewis base ligand. As {Cr7Ni} is a putative molecular electron spin qubit this work contributes to our understanding of the chemistry that might be required to assemble molecular spin qubits.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Chromium / chemistry*
  • Crystallography, X-Ray
  • Heterocyclic Compounds / chemistry*
  • Models, Molecular
  • Molecular Structure
  • Nickel / chemistry*
  • Organometallic Compounds / chemical synthesis*
  • Organometallic Compounds / chemistry
  • Quantum Theory

Substances

  • Heterocyclic Compounds
  • Organometallic Compounds
  • Chromium
  • Nickel