Journal
INORGANICA CHIMICA ACTA
Volume 445, Issue -, Pages 37-45Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ica.2016.02.022
Keywords
Palladium; Bis(amidopyridine); Macrocycle; Lantern
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Funding
- NSERC (Canada)
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The coordination chemistry of palladium(II) with bis(3-amidopyridine) ligands [LL = 2,6-C5H3N(CONH-3-C5H4N)(2), 1; 1,3-C6H4(CONH-3-C5H4N)(2), 2; 1,3-C6H4(CONMe-3-C5H4N)(2), 3; 2,5-C4H2S(CONMe-3-C5H4N)(2), 4] has been investigated. Neutral binuclear macrocyclic complexes trans,trans-[Pd2X4(mu-LL)(2)] have been characterized with X = Cl or Br and LL = 1. Cationic complexes have been characterized as mononuclear bis(chelate) derivatives [Pd(LL)(2)](2+), when LL = 3 or 4, but a lantern complex [Pd-2(mu-LL)(4)](4+), when LL = 2. The tendency for chelation versus bridging coordination of the flexible ligands 1-4 is analyzed in terms of substituent effects on the preferred ligand conformations. In the dipalladium complexes, the macrocycle or lantern structure can accommodate guest molecules. (C) 2016 Elsevier B.V. All rights reserved.
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