FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2335133538> ?p ?o ?g. }

• W2335133538 endingPage "380" @default.
• W2335133538 startingPage "369" @default.
• W2335133538 abstract "We describe herein the effect of solvated ion pairing on the molecular motion of a pyrimidine ring coordinated on a copper center. We synthesized a series of heteroleptic copper(I) complex salts bearing an unsymmetrically substituted pyridylpyrimidine and a bulky diphosphine. Two rotational isomers of the complexes were found to coexist and interconvert in solution via intramolecular ligating atom exchange of the pyrimidine ring, where the notation of the inner (i-) and outer (o-) isomers describes the orientation of the pyrimidine ring relative to the copper center. The stability of the pyrimidine orientation was solvent- and counterion-sensitive in both 2·BF(4) {2(+) = [Cu(Mepypm)(dppp)](+), where Mepypm = 4-methyl-2-(2'-pyridyl)pyrimidine and dppp = 1,3-bis(diphenylphosphino)propane} and previously reported 1·BF(4), which possesses a bulky diphosphine ligand (1(+) = [Cu(Mepypm)(DPEphos)](+), where DPEphos = bis[2-(diphenylphosphino)phenyl] ether). Two rotational isomers of 2(+) were separately obtained as single crystals, and the structure of each isomer was examined in detail. Both the enthalpy and entropy values for the rotation of 2·BF(4) in CDCl(3) (ΔH = 6 kJ mol(-1); ΔS = 25 J K(-1) mol(-1)) were more positive than that tested under other conditions, such as in more polar solvents CD(2)Cl(2), acetone-d(6), and CD(3)CN. The reduced contact of the anion to the cation in a polar solvent seems to contribute to the enthalpy, entropy, and Gibbs free energy for rotational isomerization. This speculation based on solvated ion pairing was further confirmed by considering the rotational behavior of 2(+) with a bulky counterion, such as B(C(6)F(5))(4)(-). The findings are valuable for the design of molecular mechanical units that can be readily tuned via weak electrostatic interactions." @default.
• W2335133538 created "2016-06-24" @default.
• W2335133538 creator A5058307789 @default.
• W2335133538 creator A5073136789 @default.
• W2335133538 creator A5084137578 @default.
• W2335133538 creator A5089786787 @default.
• W2335133538 date "2012-12-13" @default.
• W2335133538 modified "2023-10-14" @default.
• W2335133538 title "Solvated-Ion-Pairing-Sensitive Molecular Bistability Based on Copper(I)-Coordinated Pyrimidine Ring Rotation" @default.
• W2335133538 cites W1963974948 @default.
• W2335133538 cites W1965450832 @default.
• W2335133538 cites W1966024523 @default.
• W2335133538 cites W1969189690 @default.
• W2335133538 cites W1969975051 @default.
• W2335133538 cites W1971900369 @default.
• W2335133538 cites W1977655191 @default.
• W2335133538 cites W1980642168 @default.
• W2335133538 cites W1980685737 @default.
• W2335133538 cites W1981933796 @default.
• W2335133538 cites W1981963687 @default.
• W2335133538 cites W1982689871 @default.
• W2335133538 cites W1987027650 @default.
• W2335133538 cites W1987206449 @default.
• W2335133538 cites W1987426411 @default.
• W2335133538 cites W1987479350 @default.
• W2335133538 cites W1989306484 @default.
• W2335133538 cites W1996273492 @default.
• W2335133538 cites W1999556799 @default.
• W2335133538 cites W2002625833 @default.
• W2335133538 cites W2008135667 @default.
• W2335133538 cites W2010817445 @default.
• W2335133538 cites W2012752416 @default.
• W2335133538 cites W2016202891 @default.
• W2335133538 cites W2020099575 @default.
• W2335133538 cites W2022982822 @default.
• W2335133538 cites W2023797622 @default.
• W2335133538 cites W2026243159 @default.
• W2335133538 cites W2028416501 @default.
• W2335133538 cites W2029949151 @default.
• W2335133538 cites W2032012867 @default.
• W2335133538 cites W2034244930 @default.
• W2335133538 cites W2039357203 @default.
• W2335133538 cites W2041560104 @default.
• W2335133538 cites W2042605418 @default.
• W2335133538 cites W2043619275 @default.
• W2335133538 cites W2043988221 @default.
• W2335133538 cites W2043996384 @default.
• W2335133538 cites W2049026406 @default.
• W2335133538 cites W2050524368 @default.
• W2335133538 cites W2052346398 @default.
• W2335133538 cites W2053677933 @default.
• W2335133538 cites W2059461191 @default.
• W2335133538 cites W2062195297 @default.
• W2335133538 cites W2063334178 @default.
• W2335133538 cites W2064780443 @default.
• W2335133538 cites W2065497508 @default.
• W2335133538 cites W2066877229 @default.
• W2335133538 cites W2069506896 @default.
• W2335133538 cites W2069739722 @default.
• W2335133538 cites W2073463304 @default.
• W2335133538 cites W2074168988 @default.
• W2335133538 cites W2074905082 @default.
• W2335133538 cites W2078311074 @default.
• W2335133538 cites W2078830316 @default.
• W2335133538 cites W2082034772 @default.
• W2335133538 cites W2082866465 @default.
• W2335133538 cites W2083203069 @default.
• W2335133538 cites W2085186095 @default.
• W2335133538 cites W2086668998 @default.
• W2335133538 cites W2087182711 @default.
• W2335133538 cites W2089025954 @default.
• W2335133538 cites W2092226069 @default.
• W2335133538 cites W2092892656 @default.
• W2335133538 cites W2094261826 @default.
• W2335133538 cites W2095110534 @default.
• W2335133538 cites W2095135928 @default.
• W2335133538 cites W2100538398 @default.
• W2335133538 cites W2101103741 @default.
• W2335133538 cites W2103000899 @default.
• W2335133538 cites W2103971194 @default.
• W2335133538 cites W2131350133 @default.
• W2335133538 cites W2136168875 @default.
• W2335133538 cites W2146601273 @default.
• W2335133538 cites W2147440332 @default.
• W2335133538 cites W2157698358 @default.
• W2335133538 cites W2169765444 @default.
• W2335133538 cites W2312439091 @default.
• W2335133538 cites W2314846974 @default.
• W2335133538 cites W2316766521 @default.
• W2335133538 cites W2317543483 @default.
• W2335133538 cites W2319097948 @default.
• W2335133538 cites W2319119488 @default.
• W2335133538 cites W2324021428 @default.
• W2335133538 cites W2329586341 @default.
• W2335133538 cites W2334243722 @default.
• W2335133538 cites W2950757183 @default.
• W2335133538 cites W2952544519 @default.
• W2335133538 cites W2952953177 @default.

• next