FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1968862246> ?p ?o ?g. }

• W1968862246 endingPage "1179" @default.
• W1968862246 startingPage "1171" @default.
• W1968862246 abstract "The complex formation kinetics of aquated copper(II) ion reacting with 12 related tripodal ligands have been studied in aqueous solution at 25 degrees C, mu = 0.10 M (NaClO4). For most of the ligands studied, specific formation rate constants have been resolved for both the unprotonated and monoprotonated ligand species. All of the tripodal ligands included in this study contain a bridgehead amine nitrogen with the three legs consisting of 2-methylthioethyl or 2-ethylthioethyl and/or 2-pyridylethyl or 2-pyridylmethyl. Since the bridgehead nitrogen is too sterically hindered to participate in initial coordinate bond formation, the first bond must involve a thiaether sulfur or a pyridine nitrogen on one of the pendant legs followed by coordination to the bridgehead nitrogen to complete the first chelate ring. All kinetic data are interpreted in terms of this presumed sequence in the bond formation steps. For the two ligands in which all three pendant legs contain thiaether sulfur donor atoms, the rate-determining step appears to be at the point of second bond formation (chelate ring closure), although the distinction is not well defined. For all other unprotonated ligands, the kinetic behavior is consistent with the first-bond formation being rate-determining. Upon protonation, the rate-determining step appears to shift to the point of proton loss associated with second-bond formation in several cases. A particularly interesting observation is that the tripodal ligand tris(ethylthioethyl)amine (TEMEA) exhibits specific Cu(II) complex formation rate constants that are virtually identical to those for a closely related macrocyclic ligand, 1,4,8-trithia-11-azacyclotetradecane ([14]aneNS3), but the calculated CuIIL dissociation rate constants differ by a factor of 1000. A further comparison of the calculated dissociation rate constants for Cu(II)-tripodal ligand complexes indicates that a Cu(II)-N(pyridine) bond is approximately 10(4) times stronger than a Cu(II)-SR2 bond. This leads to the conclusion that a 1:1 Cu(II)-SR2 complex would have a predicted stability constant of about 0.04 M-1 in aqueous solution--the first estimate obtained for the strength of a single Cu(II)-S(thiaether) bond." @default.
• W1968862246 created "2016-06-24" @default.
• W1968862246 creator A5021375429 @default.
• W1968862246 creator A5029564835 @default.
• W1968862246 creator A5035053957 @default.
• W1968862246 creator A5091101210 @default.
• W1968862246 date "2000-02-23" @default.
• W1968862246 modified "2023-09-27" @default.
• W1968862246 title "Kinetics and Mechanism of Copper(II) Complex Formation with Tripodal Aminopolythiaether and Aminopolypyridyl Ligands in Aqueous Solution" @default.
• W1968862246 cites W1965666010 @default.
• W1968862246 cites W1972456502 @default.
• W1968862246 cites W1980732709 @default.
• W1968862246 cites W1992843397 @default.
• W1968862246 cites W1995249355 @default.
• W1968862246 cites W2006622554 @default.
• W1968862246 cites W2006930540 @default.
• W1968862246 cites W2013949469 @default.
• W1968862246 cites W2017878140 @default.
• W1968862246 cites W2029353465 @default.
• W1968862246 cites W2041694490 @default.
• W1968862246 cites W2041919611 @default.
• W1968862246 cites W2047520670 @default.
• W1968862246 cites W2049852040 @default.
• W1968862246 cites W2057033258 @default.
• W1968862246 cites W2059139638 @default.
• W1968862246 cites W2071266512 @default.
• W1968862246 cites W2072883011 @default.
• W1968862246 cites W2079948241 @default.
• W1968862246 cites W2080752918 @default.
• W1968862246 cites W2081365655 @default.
• W1968862246 cites W2083446084 @default.
• W1968862246 cites W2087442781 @default.
• W1968862246 cites W2087607959 @default.
• W1968862246 cites W2089736023 @default.
• W1968862246 cites W2131580117 @default.
• W1968862246 cites W2162612871 @default.
• W1968862246 cites W2315878233 @default.
• W1968862246 cites W2322682769 @default.
• W1968862246 cites W2949118930 @default.
• W1968862246 cites W2949274057 @default.
• W1968862246 cites W3004502972 @default.
• W1968862246 cites W3004860102 @default.
• W1968862246 cites W3005021795 @default.
• W1968862246 cites W3137967782 @default.
• W1968862246 cites W618157826 @default.
• W1968862246 doi "https://doi.org/10.1021/ic990904p" @default.
• W1968862246 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/12526407" @default.
• W1968862246 hasPublicationYear "2000" @default.
• W1968862246 type Work @default.
• W1968862246 sameAs 1968862246 @default.
• W1968862246 citedByCount "26" @default.
• W1968862246 countsByYear W19688622462013 @default.
• W1968862246 countsByYear W19688622462014 @default.
• W1968862246 countsByYear W19688622462017 @default.
• W1968862246 countsByYear W19688622462020 @default.
• W1968862246 countsByYear W19688622462022 @default.
• W1968862246 crossrefType "journal-article" @default.
• W1968862246 hasAuthorship W1968862246A5021375429 @default.
• W1968862246 hasAuthorship W1968862246A5029564835 @default.
• W1968862246 hasAuthorship W1968862246A5035053957 @default.
• W1968862246 hasAuthorship W1968862246A5091101210 @default.
• W1968862246 hasConcept C116569031 @default.
• W1968862246 hasConcept C121332964 @default.
• W1968862246 hasConcept C131779359 @default.
• W1968862246 hasConcept C145148216 @default.
• W1968862246 hasConcept C148898269 @default.
• W1968862246 hasConcept C155647269 @default.
• W1968862246 hasConcept C161790260 @default.
• W1968862246 hasConcept C170493617 @default.
• W1968862246 hasConcept C178790620 @default.
• W1968862246 hasConcept C184651966 @default.
• W1968862246 hasConcept C185592680 @default.
• W1968862246 hasConcept C201194858 @default.
• W1968862246 hasConcept C2779485729 @default.
• W1968862246 hasConcept C2779868791 @default.
• W1968862246 hasConcept C30095370 @default.
• W1968862246 hasConcept C3044715 @default.
• W1968862246 hasConcept C55493867 @default.
• W1968862246 hasConcept C62520636 @default.
• W1968862246 hasConcept C71240020 @default.
• W1968862246 hasConcept C8010536 @default.
• W1968862246 hasConcept C93391505 @default.
• W1968862246 hasConceptScore W1968862246C116569031 @default.
• W1968862246 hasConceptScore W1968862246C121332964 @default.
• W1968862246 hasConceptScore W1968862246C131779359 @default.
• W1968862246 hasConceptScore W1968862246C145148216 @default.
• W1968862246 hasConceptScore W1968862246C148898269 @default.
• W1968862246 hasConceptScore W1968862246C155647269 @default.
• W1968862246 hasConceptScore W1968862246C161790260 @default.
• W1968862246 hasConceptScore W1968862246C170493617 @default.
• W1968862246 hasConceptScore W1968862246C178790620 @default.
• W1968862246 hasConceptScore W1968862246C184651966 @default.
• W1968862246 hasConceptScore W1968862246C185592680 @default.
• W1968862246 hasConceptScore W1968862246C201194858 @default.
• W1968862246 hasConceptScore W1968862246C2779485729 @default.
• W1968862246 hasConceptScore W1968862246C2779868791 @default.
• W1968862246 hasConceptScore W1968862246C30095370 @default.
• W1968862246 hasConceptScore W1968862246C3044715 @default.

• next