Coordination polymers of Cu(II) and Cd(II) with bifunctional chelates of the type dipicolylamino-alkylcarboxylate, (NC5H4CH2)2N(CH2)nCO2H (n = 1, 2, 3 and 4)

Mark Bartholomä, Birgit Ploier, Hoi Cheung, Wayne Ouellette, Jon Zubieta

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

A series of bifunctional chelates of the type dipicolylamino-alkylcarboxylate (NC5H4CH2)2N(CH2)nCO2H (n = 1-4; HL1-HL4, respectively) has been prepared. Reactions of the ligands in aqueous methanol/N,N-dimethylformamide with the appropriate Cu(II) salts yielded the compounds [CuL1](NO3)·H2O (1·H2O), [CuL2(H2O)]BF4·H2O (2·H2O), [Cu(HL3)(SO4)]2 (3) and [CuL4(NO3)]·MeOH (4·MeOH). While compounds 1, 2 and 4 are one-dimensional, the detailed connectivities within the chains are quite distinct, depending on factors such as alkyl chain length and ligation of aqua ligands or anionic components. In contrast to 1, 2 and 4, the structure of 3 is molecular, a binuclear assembly of edge-sharing Cu(II) '4+2' distorted octahedra. The Cd(II) species, [{CdL2}2(SO4)]·4H2O (5·4H2O), prepared from HL2 and CdSO4·nH2O in aqueous methanol/N,N-dimethylformamide, is two-dimensional, with a network constructed from binuclear units of seven coordinate Cd(II), {CdL2}22 +, linked through bridging SO42- groups to produce an assembly of linked hexagonal rings [{CdL2}2(SO4)]6.

Original languageEnglish (US)
Pages (from-to)1659-1665
Number of pages7
JournalInorganica Chimica Acta
Volume363
Issue number8
DOIs
StatePublished - May 5 2010

Keywords

  • Bifunctional chelates
  • Coordination polymers
  • One-dimensional Cu(II) compounds two-dimensional Cd(II) coordination polymers

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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