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• W2073285449 endingPage "7027" @default.
• W2073285449 startingPage "7016" @default.
• W2073285449 abstract "The synthesis of two new ligands constituted of a tris(2-aminoethyl)amine moiety linked to the 2,6 positions of a pyridine spacer through methylene groups in which the hanging arm is further functionalized with a 2-pycolyl (L1) or 3-pycolyl (L2) group is presented. The protonation of L1 and L2 and formation of Cu2+ complexes have been studied using potentiometric, NMR, X-ray, and kinetic experiments. The results provide new information about the relevance of molecular movements in the chemistry of this kind of so-called scorpiand ligand. The comparison between these two ligands that only differ in the position of the substituent at the arm reveals important differences in both thermodynamic and kinetic properties. The Cu2+ complex with L1 is several orders of magnitude more stable than that with L2, surely because in the latter case the pyridine nitrogen at the pendant arm is unable to coordinate to the metal ion with the ligand acting as hexadentate, a possibility that occurs in the case of [CuL1]2+, as demonstrated by its crystal structure. Significant differences are also found between both ligands in the kinetic studies of complex formation and decomposition. For L1, those processes occur in a single kinetic step, whereas for L2 they occur with the formation of a detectable reaction intermediate whose structure corresponds to that resulting from the movement typical of scorpiands. Another interesting conclusion derived from kinetic studies on complex formation is that the reactive form of the ligand is H3L3+ for L1 and H2L2+ for L2. DFT calculations are also reported, and they allow a rationalization of the kinetic results relative to the reactive forms of the ligands in the process of complex formation. In addition, they provide a full picture of the mechanistic pathway leading to the formation of the first Cu−N bond, including outer-sphere complexation, water dissociation, and reorganization of the outer-sphere complex." @default.
• W2073285449 created "2016-06-24" @default.
• W2073285449 creator A5033534066 @default.
• W2073285449 creator A5034898549 @default.
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• W2073285449 creator A5086170170 @default.
• W2073285449 creator A5090792352 @default.
• W2073285449 date "2010-07-08" @default.
• W2073285449 modified "2023-10-18" @default.
• W2073285449 title "Hydrogen and Copper Ion Induced Molecular Reorganizations in Two New Scorpiand-Like Ligands Appended with Pyridine Rings" @default.
• W2073285449 cites W1489326505 @default.
• W2073285449 cites W1541922041 @default.
• W2073285449 cites W1600025620 @default.
• W2073285449 cites W1876542360 @default.
• W2073285449 cites W1883652121 @default.
• W2073285449 cites W1892996896 @default.
• W2073285449 cites W1964051078 @default.
• W2073285449 cites W1965385598 @default.
• W2073285449 cites W1966182479 @default.
• W2073285449 cites W1967256106 @default.
• W2073285449 cites W1968862246 @default.
• W2073285449 cites W1974194934 @default.
• W2073285449 cites W1975259432 @default.
• W2073285449 cites W1975292161 @default.
• W2073285449 cites W1975318205 @default.
• W2073285449 cites W1977994398 @default.
• W2073285449 cites W1980222494 @default.
• W2073285449 cites W1980992154 @default.
• W2073285449 cites W1984230997 @default.
• W2073285449 cites W1984309281 @default.
• W2073285449 cites W1985090879 @default.
• W2073285449 cites W1988195234 @default.
• W2073285449 cites W1990891922 @default.
• W2073285449 cites W1991632645 @default.
• W2073285449 cites W1992614390 @default.
• W2073285449 cites W1992950966 @default.
• W2073285449 cites W1995806948 @default.
• W2073285449 cites W1996611339 @default.
• W2073285449 cites W2000806332 @default.
• W2073285449 cites W2010451904 @default.
• W2073285449 cites W2013314618 @default.
• W2073285449 cites W2014810307 @default.
• W2073285449 cites W2015131817 @default.
• W2073285449 cites W2017471394 @default.
• W2073285449 cites W2023271753 @default.
• W2073285449 cites W2024021131 @default.
• W2073285449 cites W2024206386 @default.
• W2073285449 cites W2024722076 @default.
• W2073285449 cites W2028357010 @default.
• W2073285449 cites W2028534022 @default.
• W2073285449 cites W2029716639 @default.
• W2073285449 cites W2031240559 @default.
• W2073285449 cites W2033745819 @default.
• W2073285449 cites W2034438493 @default.
• W2073285449 cites W2034839108 @default.
• W2073285449 cites W2036807870 @default.
• W2073285449 cites W2036841827 @default.
• W2073285449 cites W2039559098 @default.
• W2073285449 cites W2039626632 @default.
• W2073285449 cites W2040688185 @default.
• W2073285449 cites W2043208802 @default.
• W2073285449 cites W2043835021 @default.
• W2073285449 cites W2044490585 @default.
• W2073285449 cites W2045302775 @default.
• W2073285449 cites W2048046519 @default.
• W2073285449 cites W2049120715 @default.
• W2073285449 cites W2050303294 @default.
• W2073285449 cites W2053484470 @default.
• W2073285449 cites W2056453014 @default.
• W2073285449 cites W2065983264 @default.
• W2073285449 cites W2068617439 @default.
• W2073285449 cites W2069535778 @default.
• W2073285449 cites W2075745859 @default.
• W2073285449 cites W2078975459 @default.
• W2073285449 cites W2081072952 @default.
• W2073285449 cites W2085253841 @default.
• W2073285449 cites W2086945873 @default.
• W2073285449 cites W2090284894 @default.
• W2073285449 cites W2092866672 @default.
• W2073285449 cites W2094922595 @default.
• W2073285449 cites W2100700190 @default.
• W2073285449 cites W2113053476 @default.
• W2073285449 cites W2120712811 @default.
• W2073285449 cites W2131350133 @default.
• W2073285449 cites W2137055458 @default.
• W2073285449 cites W2138418659 @default.
• W2073285449 cites W2138520198 @default.
• W2073285449 cites W2141887930 @default.
• W2073285449 cites W2143981217 @default.
• W2073285449 cites W2151047531 @default.
• W2073285449 cites W2155269946 @default.
• W2073285449 cites W2156100614 @default.
• W2073285449 cites W2950466609 @default.

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