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• W2896477434 abstract "The copper coordination chemistry of two multidentate carboxamido ligands derived from HL1 (offering two quinolyl and one carboxamide donor) and H4L2 (with two pyridine(dicarboxamido) units linked by naphthalene spacers) was explored. The former was chosen because upon deprotonation it would provide a monoanionic mer-coordinating N-donor set that would model the putative deprotonated form of the His-brace in copper monooxygenases, while the latter was designed to bind two copper ions and enable comparisons to other systems with different ligand spacers. Upon reaction with Cu(I)-mesityl, HL1 yielded a symmetric dimer (L1Cu)2 in which each bis(quinolyl)amide ligand binds via two N-donors to one Cu(I) ion and via the third to the other Cu(I) center. Monomeric Cu(II) complexes [L1Cu(H2O)2](OTf) and L12Cu were also characterized. Treatment of H4L2 with Cu(OTf)2 and excess Me4NOH (in CH3CN, pyridine/H2O, or MeOH) yielded complexes with anions of general formula [L2Cu2(X)]n−, where X = CH3CONH– (n = 1), CO32– (n = 2), or MeO− (n = 1). X-ray structures of these complexes revealed the (L2)4− ligand binding to two Cu(II) ions in an open paddle-wheel geometry, with an additional bridging ligand (X) completing the square planar coordination sphere of each metal ion. The open paddlewheel motif differs from the more ‘open’ puckered geometry seen with related ligands with different spacer units." @default.
• W2896477434 created "2018-10-26" @default.
• W2896477434 creator A5041752307 @default.
• W2896477434 creator A5057548540 @default.
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• W2896477434 date "2019-01-01" @default.
• W2896477434 modified "2023-09-26" @default.
• W2896477434 title "Copper complexes of multidentate carboxamide ligands" @default.
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• W2896477434 doi "https://doi.org/10.1016/j.ica.2018.10.011" @default.
• W2896477434 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6519725" @default.
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