PMID: 11931968Apr 5, 2002Paper

15-MC-5 manganese metallacrowns hosting herbicide complexes. Structure and bioactivity

Journal of Inorganic Biochemistry
C Dendrinou-SamaraD P Kessissoglou

Abstract

Interaction of manganese with salicylhydroxamic ligands leads to the formation of a series of 15-membered metallacrown Mn(II)(L)(2)[15-MC(Mn(III)N(shi))-5](py)(6) (L=alkanoato ligand). The crystal structure contains a neutral 15-membered metallacrown ring of the type [15-MC(Mn(III)N(shi))-5]. The metallacrown core consists of five Mn(III) and five shi(-3) ligands. The 15-membered metallacrown ring is formed by the succession of five structural moieties of the type [Mn(III)-N-O]. The diversity in the configuration (planar or propeller) for the ring Mn(III) ions gives to the metallacrown core flexibility and simultaneously allows the encapsulation of the sixth Mn(II). The encapsulated Mn(II) is seven-coordinate and is bound to the five hydroximate oxygen donors provided by the metallacrown core, and two oxygen atoms from the carboxylate herbicide ligands. Antibacterial screening data showed that among all the compounds tested, manganese metallacrowns are more active than the simple manganese herbicide or carboxylate complexes while an increase in the efficiency of [15-MC(Mn(III)N(shi))-5] towards the analogous [12-MC(Mn(III)N(shi))-4] can be observed.

Citations

Feb 11, 2003·Journal of Inorganic Biochemistry·Maria AlexiouDimitris P Kessissoglou
May 5, 2011·Inorganic Chemistry·Choong-Sun LimVincent L Pecoraro
Jun 20, 2007·Dalton Transactions : an International Journal of Inorganic Chemistry·Tereza AfratiDimitris P Kessissoglou
Nov 7, 2007·Dalton Transactions : an International Journal of Inorganic Chemistry·Tereza AfratiDimitris P Kessissoglou
Oct 16, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·Hua YangJian-Min Dou
Dec 22, 2015·Journal of Inorganic Biochemistry·Ewa RajczakBernard Juskowiak
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