Coordination driven self-assembly of metallamacrocycles using ambidentate linkers and self-selection of single linkage isomer

Arun Kumar Bar, Rajesh Chakrabarty, Hon Man Lee, Partha Sarathi Mukherjee

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7 Citations (Scopus)


Nicotinate-N-oxide and isonicotinate-N-oxide have been employed to synthesize four heterometallic metallamacrocycles [(dppf)2Pd 2(nicotinate-N-oxide)2](OTf)2 (1), [(dppf) 2Pt2(nicotinate-N-oxide)2](OTf)2 (2), [(dppf)2Pd2(isonicotinate-N-oxide) 2](OTf)2 (3) and [(dppf)2Pt 2(isonicotinate-N-oxide)2](OTf)2 (4). The complexes represent the first examples of metallamacrocycles driven by solely Pd(II)/Pt(II)-O coordination using carboxylate-N-oxide donor. All the complexes 1-4 are characterized by IR, UV-Vis, multinuclear NMR spectroscopic and ESI-MS studies. The molecular structures of the complexes 1 and 3 are unambiguously determined by single crystal X-ray diffraction analysis. Despite the possibility of formation of several linkage isomers due to ambidentate nature of the donors, exclusive formation of [2 + 2] self-assembled single isomeric metallamacrocycle in each case is interesting observation.

Original languageEnglish
Pages (from-to)313-320
Number of pages8
JournalInorganica Chimica Acta
Issue number1
Publication statusPublished - 2011 Jun 15


All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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