FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2086818051> ?p ?o ?g. }

• W2086818051 endingPage "1025" @default.
• W2086818051 startingPage "1016" @default.
• W2086818051 abstract "Abstract The interaction of fluorinated alcohols with the anionic hydrido complex [HRe 2 (CO) 9 ] − ( 1 ) has been investigated by NMR spectroscopy. According to the acidic strength of the alcohols, the interaction may result not only in the formation of dihydrogen‐bonded ROH ⋅⋅⋅ [HRe 2 (CO) 9 ] − adducts 2 , but also in proton transfer to give the neutral species [H 2 Re 2 (CO) 9 ] ( 3 ). With the weaker acid trifluoroethanol (TFE) evidence for the occurrence of the dihydrogen‐bonding equilibrium was obtained by 2D 1 H NOESY. The dependence of the hydride chemical shift on TFE concentration at different temperatures provided values for the constants of this equilibrium, from which the thermodynamic parameters were evaluated as Δ H °=−2.6(2) kcal mol −1 , Δ S °=−9.3(2) cal mol −1 K −1 . This corresponds to a rather low basicity factor ( E j =0.64). Variable‐temperature T 1 measurements allowed the proton–hydride distance in adduct 2 a to be estimated (1.80 Å). In the presence of hexafluoroisopropyl alcohol (HFIP) simultaneous occurrence of both dihydrogen‐bonding and proton‐transfer equilibria was observed, and the equilibria shifted versus the protonated product 3 with increasing HFIP concentration and decreasing temperature. Reversible proton transfer between the alcohol and the hydrido complex occurs on the NMR timescale, as revealed by a 2D 1 H EXSY experiment at 240 K. For the more acidic perfluoro‐ tert ‐butyl alcohol (PFTB) the protonation equilibrium was further shifted to the right. Thermal instability of 3 prevented the acquisition of accurate thermodynamic data for these equilibria. The occurrence of the proton‐transfer processes (in spite of the unfavorable p K a values) can be explained by the formation of homoconjugated RO ⋅⋅⋅ HOR − pairs which stabilize the alcoholate anions." @default.
• W2086818051 created "2016-06-24" @default.
• W2086818051 creator A5015559947 @default.
• W2086818051 creator A5040670351 @default.
• W2086818051 creator A5058291231 @default.
• W2086818051 creator A5066163097 @default.
• W2086818051 date "2006-01-13" @default.
• W2086818051 modified "2023-10-17" @default.
• W2086818051 title "NMR Investigation of the Dihydrogen-Bonding and Proton-Transfer Equilibria between the Hydrido Carbonyl Anion [HRe2(CO)9]− and Fluorinated Alcohols" @default.
• W2086818051 cites W1431389385 @default.
• W2086818051 cites W1963981599 @default.
• W2086818051 cites W1964508917 @default.
• W2086818051 cites W1965486033 @default.
• W2086818051 cites W1966916671 @default.
• W2086818051 cites W1968038156 @default.
• W2086818051 cites W1968670039 @default.
• W2086818051 cites W1971288989 @default.
• W2086818051 cites W1975145755 @default.
• W2086818051 cites W1977520616 @default.
• W2086818051 cites W1977870471 @default.
• W2086818051 cites W1979236736 @default.
• W2086818051 cites W1980225533 @default.
• W2086818051 cites W1981595838 @default.
• W2086818051 cites W1985868815 @default.
• W2086818051 cites W1987730216 @default.
• W2086818051 cites W1992758404 @default.
• W2086818051 cites W1993733980 @default.
• W2086818051 cites W1996788682 @default.
• W2086818051 cites W1997278003 @default.
• W2086818051 cites W1999983442 @default.
• W2086818051 cites W2000975220 @default.
• W2086818051 cites W2002262128 @default.
• W2086818051 cites W2003327020 @default.
• W2086818051 cites W2004326574 @default.
• W2086818051 cites W2017881893 @default.
• W2086818051 cites W2020527778 @default.
• W2086818051 cites W2028526006 @default.
• W2086818051 cites W2033925868 @default.
• W2086818051 cites W2036620431 @default.
• W2086818051 cites W2039303960 @default.
• W2086818051 cites W2044575624 @default.
• W2086818051 cites W2045415437 @default.
• W2086818051 cites W2047704647 @default.
• W2086818051 cites W2049439497 @default.
• W2086818051 cites W2054113243 @default.
• W2086818051 cites W2055876038 @default.
• W2086818051 cites W2057300170 @default.
• W2086818051 cites W2060412313 @default.
• W2086818051 cites W2069854418 @default.
• W2086818051 cites W2073315041 @default.
• W2086818051 cites W2075487995 @default.
• W2086818051 cites W2077427344 @default.
• W2086818051 cites W2085001192 @default.
• W2086818051 cites W2094640450 @default.
• W2086818051 cites W2098893309 @default.
• W2086818051 cites W2118955251 @default.
• W2086818051 cites W2130704266 @default.
• W2086818051 cites W2139866665 @default.
• W2086818051 cites W2141031397 @default.
• W2086818051 cites W2151632824 @default.
• W2086818051 cites W2152306218 @default.
• W2086818051 cites W2157753410 @default.
• W2086818051 cites W2161373975 @default.
• W2086818051 cites W227099636 @default.
• W2086818051 cites W2489085476 @default.
• W2086818051 cites W2952684232 @default.
• W2086818051 cites W31187298 @default.
• W2086818051 cites W37950711 @default.
• W2086818051 cites W4230502875 @default.
• W2086818051 cites W4243338393 @default.
• W2086818051 cites W4245235704 @default.
• W2086818051 doi "https://doi.org/10.1002/chem.200500920" @default.
• W2086818051 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/16267862" @default.
• W2086818051 hasPublicationYear "2006" @default.
• W2086818051 type Work @default.
• W2086818051 sameAs 2086818051 @default.
• W2086818051 citedByCount "16" @default.
• W2086818051 countsByYear W20868180512014 @default.
• W2086818051 countsByYear W20868180512015 @default.
• W2086818051 countsByYear W20868180512016 @default.
• W2086818051 countsByYear W20868180512017 @default.
• W2086818051 countsByYear W20868180512018 @default.
• W2086818051 countsByYear W20868180512019 @default.
• W2086818051 countsByYear W20868180512020 @default.
• W2086818051 crossrefType "journal-article" @default.
• W2086818051 hasAuthorship W2086818051A5015559947 @default.
• W2086818051 hasAuthorship W2086818051A5040670351 @default.
• W2086818051 hasAuthorship W2086818051A5058291231 @default.
• W2086818051 hasAuthorship W2086818051A5066163097 @default.
• W2086818051 hasConcept C103319777 @default.
• W2086818051 hasConcept C10710636 @default.
• W2086818051 hasConcept C108204754 @default.
• W2086818051 hasConcept C111429119 @default.
• W2086818051 hasConcept C112887158 @default.
• W2086818051 hasConcept C121332964 @default.
• W2086818051 hasConcept C145148216 @default.
• W2086818051 hasConcept C147789679 @default.
• W2086818051 hasConcept C155647269 @default.

• next