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Self-assembly and cytotoxicity study of waterwheel-like dinuclear metal complexes: The first metal complexes appended with multiple free hydroxamic acid groups

  • Wen Hua Wang
  • , Wei Sheng Liu
  • , Ya Wen Wang
  • , Yang Li
  • , Li Fang Zheng
  • , Da Qi Wang
  • Lanzhou University
  • Liaocheng University

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Two waterwheel-like dinuclear complexes [M2(PHA)4(H2O)2] (M = Cu(II) (1), Zn(II) (2); HPHA = phthal-hydroxamic acid) appended with four free hydroxamic acid groups, namely, free hydroxamic acid metal complexes (FHAMCs) have been synthesized and characterized. The crystal structure of complex 1 was determined by single crystal X-ray diffraction, which adopts the paddlewheel motif with four bidentate carboxylate ligands joining two Cu(II) ions. The relative cytotoxicities of compounds 1 and 2 against SMMC-7721 and HO-8910 cell lines are similar and more predominant than HPHA (IC50: Cu(II) > Zn(II) ≫ HPHA). The synergic effect of the bound water molecules, multiple free hydroxamic acid groups and dimetal active sites with bridging carboxylate may have significant impacts on their pharmacological activity. As the prototype for a new class of hydroxamic acid derivatives, the self-assembly of FHAMCs presents a promising new strategy in designing multiple hydroxamic acids with remarkable bioactivities.

Original languageEnglish
Pages (from-to)297-304
Number of pages8
JournalJournal of Inorganic Biochemistry
Volume101
Issue number2
DOIs
StatePublished - Feb 2007
Externally publishedYes

Keywords

  • Crystal structure
  • Cytotoxic activity
  • Free hydroxamic acid metal complexes
  • Multiple hydroxamic acid
  • Tetracarboxylatedicopper(II) complexes

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