FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2069792281> ?p ?o ?g. }

• W2069792281 endingPage "1313" @default.
• W2069792281 startingPage "1305" @default.
• W2069792281 abstract "The reduction of a redox-active ligand is shown to drive reversible switching of a Cu(I) [2]pseudorotaxane ([2]PR+) into the reduced [3]pseudorotaxane ([3]PR+) by a bimolecular mechanism. The unreduced pseudorotaxanes [2]PR+ and [3]PR2+ are initially self-assembled from the binucleating ligand, 3,6-bis(5-methyl-2-pyridine)-1,2,4,5-tetrazine (Me2BPTZ), and a preformed copper-macrocycle moiety (Cu-M+) based on 1,10-phenanthroline. X-ray crystallography revealed a syn geometry of the [3]PR2+. The UV−vis−NIR spectra show low-energy metal-to-ligand charge-transfer transitions that red shift from 808 nm for [2]PR+ to 1088 nm for [3]PR2+. Quantitative analysis of the UV−vis−NIR titration shows the stepwise formation constants to be K1 = 8.9 × 108 M−1 and K2 = 3.1 × 106 M−1, indicative of negative cooperativity. The cyclic voltammetry (CV) and coulometry of Me2BPTZ, [2]PR+, and [3]PR2+ shows the one-electron reductions at E1/2 = −0.96, −0.65, and −0.285 V, respectively, to be stabilized in a stepwise manner by each Cu+ ion. CVs of [2]PR+ show changes with scan rate consistent with an EC mechanism of supramolecular disproportionation after reduction: [2]PR0 + [2]PR+ = [3]PR+ + Me2BPTZ0 (KD*, kd). UV−vis−NIR spectroelectrochemistry was used to confirm the 1:1 product stoichiometry for [3]PR+:Me2BPTZ. The driving force (ΔGD* = −5.1 kcal mol−1) for the reaction is based on the enhanced stability of the reduced [3]PR+ over reduced [2]PR0 by 365 mV (8.4 kcal mol−1). Digital simulations of the CVs are consistent with a bimolecular pathway (kd = 12 000 s−1 M−1). Confirmation of the mechanism provides a basis to extend this new switching modality to molecular machines." @default.
• W2069792281 created "2016-06-24" @default.
• W2069792281 creator A5011785645 @default.
• W2069792281 creator A5012150049 @default.
• W2069792281 creator A5021764467 @default.
• W2069792281 creator A5024785976 @default.
• W2069792281 creator A5029677251 @default.
• W2069792281 creator A5041167652 @default.
• W2069792281 creator A5045656233 @default.
• W2069792281 creator A5054457181 @default.
• W2069792281 creator A5072699347 @default.
• W2069792281 creator A5073400173 @default.
• W2069792281 creator A5078725668 @default.
• W2069792281 creator A5081066456 @default.
• W2069792281 date "2009-01-06" @default.
• W2069792281 modified "2023-09-27" @default.
• W2069792281 title "Reduction of a Redox-Active Ligand Drives Switching in a Cu(I) Pseudorotaxane by a Bimolecular Mechanism" @default.
• W2069792281 cites W1487183720 @default.
• W2069792281 cites W1910080853 @default.
• W2069792281 cites W1963646019 @default.
• W2069792281 cites W1964177527 @default.
• W2069792281 cites W1968622011 @default.
• W2069792281 cites W1968983326 @default.
• W2069792281 cites W1971950282 @default.
• W2069792281 cites W1972237901 @default.
• W2069792281 cites W1975318205 @default.
• W2069792281 cites W1979031033 @default.
• W2069792281 cites W1981088944 @default.
• W2069792281 cites W1984809631 @default.
• W2069792281 cites W1986501322 @default.
• W2069792281 cites W1986729054 @default.
• W2069792281 cites W1988402794 @default.
• W2069792281 cites W1990830736 @default.
• W2069792281 cites W1991327436 @default.
• W2069792281 cites W1991749592 @default.
• W2069792281 cites W1991875331 @default.
• W2069792281 cites W1995997352 @default.
• W2069792281 cites W1999829206 @default.
• W2069792281 cites W2000794088 @default.
• W2069792281 cites W2001398031 @default.
• W2069792281 cites W2002589972 @default.
• W2069792281 cites W2004977643 @default.
• W2069792281 cites W2008803333 @default.
• W2069792281 cites W2009574377 @default.
• W2069792281 cites W2009928882 @default.
• W2069792281 cites W2010590647 @default.
• W2069792281 cites W2012391712 @default.
• W2069792281 cites W2012661044 @default.
• W2069792281 cites W2016063637 @default.
• W2069792281 cites W2016467718 @default.
• W2069792281 cites W2017739603 @default.
• W2069792281 cites W2018909996 @default.
• W2069792281 cites W2019269818 @default.
• W2069792281 cites W2019926612 @default.
• W2069792281 cites W2020074938 @default.
• W2069792281 cites W2024021131 @default.
• W2069792281 cites W2024859175 @default.
• W2069792281 cites W2026495506 @default.
• W2069792281 cites W2026895696 @default.
• W2069792281 cites W2030681094 @default.
• W2069792281 cites W2035105825 @default.
• W2069792281 cites W2037832728 @default.
• W2069792281 cites W2038436944 @default.
• W2069792281 cites W2039459422 @default.
• W2069792281 cites W2041295630 @default.
• W2069792281 cites W2044926354 @default.
• W2069792281 cites W2044988442 @default.
• W2069792281 cites W2046719000 @default.
• W2069792281 cites W2047093271 @default.
• W2069792281 cites W2048346592 @default.
• W2069792281 cites W2050463265 @default.
• W2069792281 cites W2052706462 @default.
• W2069792281 cites W2052786742 @default.
• W2069792281 cites W2057817790 @default.
• W2069792281 cites W2062159946 @default.
• W2069792281 cites W2068025830 @default.
• W2069792281 cites W2068699055 @default.
• W2069792281 cites W2069493628 @default.
• W2069792281 cites W2070051762 @default.
• W2069792281 cites W2073654582 @default.
• W2069792281 cites W2073829427 @default.
• W2069792281 cites W2074168988 @default.
• W2069792281 cites W2075015982 @default.
• W2069792281 cites W2078174502 @default.
• W2069792281 cites W2078344646 @default.
• W2069792281 cites W2078548136 @default.
• W2069792281 cites W2078830316 @default.
• W2069792281 cites W2079399405 @default.
• W2069792281 cites W2079728000 @default.
• W2069792281 cites W2082087454 @default.
• W2069792281 cites W2087578951 @default.
• W2069792281 cites W2087681002 @default.
• W2069792281 cites W2089752558 @default.
• W2069792281 cites W2092103971 @default.
• W2069792281 cites W2092281249 @default.
• W2069792281 cites W2092297612 @default.
• W2069792281 cites W2093363850 @default.
• W2069792281 cites W2094055209 @default.

• next