Matches in SemOpenAlex for { <https://semopenalex.org/work/W2010394903> ?p ?o ?g. }
Showing items 1 to 92 of
92
with 100 items per page.
- W2010394903 endingPage "2585" @default.
- W2010394903 startingPage "2578" @default.
- W2010394903 abstract "The new cyclic phosphine O2S[(t-Bu)MeC6H2O]2PPh (1) was used to prepare the new cyclic tetraoxyphosphoranes O2S[(t-Bu)MeC6H2O]2PPh(O2C6Cl4) (2) and O2S[(t-Bu)MeC6H2O]2PPh(O2C6H4) (3) by oxidative addition reactions. In similar reactions, the new cyclic pentaoxyphosphoranes O2S[(t-Bu)MeC6H2O]2P(OCH2CCl3)3 (4), O2S[Me2C6H2O]2P(OPh)3 (5), and O2S[(t-Bu)MeC6H2O]2P(OC6F5)3 (6) were formed from acyclic phosphites and the appropriate diol. Yields ranged from 51% to 66%. X-ray studies revealed hexacoordinated representations for 2 and 6 while 3−5 are pentacoordinate in trigonal bipyramidal geometries. For 3 and 4, the eight-membered rings are positioned diequatorially in anti chair conformations, whereas for 5, this ring occupies axial−equatorial sites in a syn twist-boat form. Tetraoxyphosphorane 3 is unique in locating the least electronegative ligand, the phenyl group, in an axial position. Oxygen donor action from the sulfone SO2 group led to a displacement from a square pyramid to an octahedron to the extent of 82.2% for the highly fluorinated member 6 in comparison with 27.9% for the tetrachlorocatecholate derivative 2. These two pentaoxyphosphoranes provide the longest and shortest P−O distance thus far from a sulfone donor group, 2.646 (5) Å for 2 and 1.936 (7) Å for 6. In comparison with oxyphosphoranes having bridging sulfur atoms in the eight-membered ring, it is apparent that sulfur atom coordination is greater than oxygen atom coordination from the sulfone group as measured by the tendencies toward hexacoordination. 31P and 1H NMR data indicate the presence of two isomeric forms for each of the phosphoranes 2−4. Structural comparisons are made with related cyclic phosphoranes containing sulfur atoms and sulfone groups relative to steric and electronic factors that influence the formation of hexacoordination." @default.
- W2010394903 created "2016-06-24" @default.
- W2010394903 creator A5029834509 @default.
- W2010394903 creator A5075895277 @default.
- W2010394903 creator A5077293086 @default.
- W2010394903 date "1997-06-01" @default.
- W2010394903 modified "2023-10-17" @default.
- W2010394903 title "Sulfonyl-Containing Eight-Membered Rings Varying in Ring Conformation in Oxyphosphoranes. Hexacoordination vs Pentacoordination<sup>1</sup>" @default.
- W2010394903 cites W1999584998 @default.
- W2010394903 cites W2030841140 @default.
- W2010394903 cites W2032400209 @default.
- W2010394903 cites W2034728799 @default.
- W2010394903 cites W2037475118 @default.
- W2010394903 cites W2038755160 @default.
- W2010394903 cites W2039488475 @default.
- W2010394903 cites W2058386891 @default.
- W2010394903 cites W2068926348 @default.
- W2010394903 cites W2082638155 @default.
- W2010394903 cites W2148066840 @default.
- W2010394903 cites W2949916973 @default.
- W2010394903 cites W2953133669 @default.
- W2010394903 cites W3137851917 @default.
- W2010394903 cites W4232569651 @default.
- W2010394903 doi "https://doi.org/10.1021/ic961418u" @default.
- W2010394903 hasPublicationYear "1997" @default.
- W2010394903 type Work @default.
- W2010394903 sameAs 2010394903 @default.
- W2010394903 citedByCount "33" @default.
- W2010394903 countsByYear W20103949032015 @default.
- W2010394903 crossrefType "journal-article" @default.
- W2010394903 hasAuthorship W2010394903A5029834509 @default.
- W2010394903 hasAuthorship W2010394903A5075895277 @default.
- W2010394903 hasAuthorship W2010394903A5077293086 @default.
- W2010394903 hasConcept C111592845 @default.
- W2010394903 hasConcept C115624301 @default.
- W2010394903 hasConcept C116569031 @default.
- W2010394903 hasConcept C155647269 @default.
- W2010394903 hasConcept C161790260 @default.
- W2010394903 hasConcept C170493617 @default.
- W2010394903 hasConcept C178790620 @default.
- W2010394903 hasConcept C185592680 @default.
- W2010394903 hasConcept C188027245 @default.
- W2010394903 hasConcept C198819137 @default.
- W2010394903 hasConcept C200119971 @default.
- W2010394903 hasConcept C2777716191 @default.
- W2010394903 hasConcept C2778448320 @default.
- W2010394903 hasConcept C2778806918 @default.
- W2010394903 hasConcept C2780378348 @default.
- W2010394903 hasConcept C518881349 @default.
- W2010394903 hasConcept C55493867 @default.
- W2010394903 hasConcept C71240020 @default.
- W2010394903 hasConcept C8010536 @default.
- W2010394903 hasConceptScore W2010394903C111592845 @default.
- W2010394903 hasConceptScore W2010394903C115624301 @default.
- W2010394903 hasConceptScore W2010394903C116569031 @default.
- W2010394903 hasConceptScore W2010394903C155647269 @default.
- W2010394903 hasConceptScore W2010394903C161790260 @default.
- W2010394903 hasConceptScore W2010394903C170493617 @default.
- W2010394903 hasConceptScore W2010394903C178790620 @default.
- W2010394903 hasConceptScore W2010394903C185592680 @default.
- W2010394903 hasConceptScore W2010394903C188027245 @default.
- W2010394903 hasConceptScore W2010394903C198819137 @default.
- W2010394903 hasConceptScore W2010394903C200119971 @default.
- W2010394903 hasConceptScore W2010394903C2777716191 @default.
- W2010394903 hasConceptScore W2010394903C2778448320 @default.
- W2010394903 hasConceptScore W2010394903C2778806918 @default.
- W2010394903 hasConceptScore W2010394903C2780378348 @default.
- W2010394903 hasConceptScore W2010394903C518881349 @default.
- W2010394903 hasConceptScore W2010394903C55493867 @default.
- W2010394903 hasConceptScore W2010394903C71240020 @default.
- W2010394903 hasConceptScore W2010394903C8010536 @default.
- W2010394903 hasIssue "12" @default.
- W2010394903 hasLocation W20103949031 @default.
- W2010394903 hasOpenAccess W2010394903 @default.
- W2010394903 hasPrimaryLocation W20103949031 @default.
- W2010394903 hasRelatedWork W205471535 @default.
- W2010394903 hasRelatedWork W2076982282 @default.
- W2010394903 hasRelatedWork W2085041189 @default.
- W2010394903 hasRelatedWork W2085696017 @default.
- W2010394903 hasRelatedWork W2103066718 @default.
- W2010394903 hasRelatedWork W2131520832 @default.
- W2010394903 hasRelatedWork W2156376779 @default.
- W2010394903 hasRelatedWork W2378479697 @default.
- W2010394903 hasRelatedWork W2587689485 @default.
- W2010394903 hasRelatedWork W3195505852 @default.
- W2010394903 hasVolume "36" @default.
- W2010394903 isParatext "false" @default.
- W2010394903 isRetracted "false" @default.
- W2010394903 magId "2010394903" @default.
- W2010394903 workType "article" @default.