Molecular tricorns: self-assembly of trinuclear palladium(II) complexes

Inorganic Chemistry
R F CarinaG Bernardinelli

Abstract

Cyclometalation of the ligand 1,3-bis(1-alkylbenzimidazol-2-yl)benzene (1) with palladium carboxylates leads to a trimeric complex [Pd(3)(ligand)(3)(carboxylate)(3)] (3). Studies in solution show that the trinuclear core is stable but that the carboxylates are labile, undergoing intra- and intermolecular exchange on an NMR time scale. The structural analogue of 1, 2,6-bis(1-alkylbenzimidazol-2-yl)pyridine (4), gives only the mononuclear species [Pd(4)(carboxylate)(2)], characterized by X-ray diffraction. This complex forms a trimer if one carboxylate is labilized by the addition of strong acid; the resulting trinuclear species is readily cleaved by nucleophiles but can include weakly basic anions within its cavity.

References

Feb 19, 2002·Chemical Reviews·Claude PiguetGérard Hopfgartner

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Citations

Dec 17, 2008·Dalton Transactions : an International Journal of Inorganic Chemistry·Maria Michela Dell'annaMaurizio Peruzzini
Nov 29, 2012·Chemical Society Reviews·Peter D Frischmann, Mark J MacLachlan
Dec 17, 2008·Dalton Transactions : an International Journal of Inorganic Chemistry·Jen-Jeh LeeJwu-Ting Chen
May 13, 2014·Acta Crystallographica. Section C, Structural Chemistry·Xiao-Hua ChenShen Lin
Mar 11, 2017·Faraday Discussions·Gerald F ManbeckEtsuko Fujita
May 18, 2010·Journal of the American Chemical Society·Peter D FrischmannMark J MacLachlan
Jun 9, 2005·Chemical Reviews·Jairton DupontJohn Spencer
Dec 11, 2008·Chemical Reviews·Ennio ZangrandoEnzo Alessio
Jul 23, 2002·Inorganic Chemistry·Zengquan QinRichard J Puddephatt
Jul 19, 2003·The Journal of Organic Chemistry·Naofumi TsukadaYoshio Inoue

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