Matches in SemOpenAlex for { <https://semopenalex.org/work/W2034863213> ?p ?o ?g. }
Showing items 1 to 65 of
65
with 100 items per page.
- W2034863213 endingPage "263" @default.
- W2034863213 startingPage "263" @default.
- W2034863213 abstract "The moderately stable chromium(v) complex, trans-bis[2-ethyl-2-hydroxybutanoato(2-)] oxo -chromate(v), [Cr( ehba )2O]- (1), has been assessed for its suitability as a synthetic intermediate for the preparation of other chromium(v) complexes. This complex undergoes a ligand exchange reaction with excess oxalic acid to form an equilibrium mixture of chromium(v) complexes which have been assigned the structures [Cr( ehba )2O]-, [Cr( ehba )(ox)O]- (2), [Cr(ox)2O]- (3) and cis -[Cr(ox)2(OH2)O]- (4). The products of the ligand exchange reaction were characterized by a combination of u.v ./visible spectroscopy, e.p.r . spectroscopy and electrochemistry. The equilibrium mixture of chromium(v) complexes decays to form chromium(III) products by a redox reaction which is much slower than the initial ligand exchange reaction. The difference in the rates of ligand exchange and subsequent reduction allows the extraction of the chromium(v) ligand exchange products into dichloromethane. n.m.r. spectroscopy and electrochemical techniques were used to identify these products. Under appropriate conditions (high oxalic acid concentrations) the major species extracted are the bis [ oxalato (2-)] oxochromate (v) complexes which have been isolated as oily solids in relatively pure form (≥90% pure) for the first time. n.m.r. spectroscopic evidence indicates that the isolated solid was a mixture of (3) and (4) which explains the difficulty encountered in crystallizing the solid. These ligand exchange reactions may be of general utility in the synthesis of chromium(v) complexes." @default.
- W2034863213 created "2016-06-24" @default.
- W2034863213 creator A5030139526 @default.
- W2034863213 creator A5031329778 @default.
- W2034863213 creator A5071614712 @default.
- W2034863213 creator A5087255984 @default.
- W2034863213 date "1990-01-01" @default.
- W2034863213 modified "2023-09-27" @default.
- W2034863213 title "Ligand Exchange and Redox Reactions of Chromium(V): Isolation of the Chromium(V) Oxalato Complexes From the Ligand Exchange Reaction of Bis[2-ethyl-2-hydroxybutanoato(2-)]oxochromate(V) With Oxalate in 50% Aqueous Acetic Acid" @default.
- W2034863213 doi "https://doi.org/10.1071/ch9900263" @default.
- W2034863213 hasPublicationYear "1990" @default.
- W2034863213 type Work @default.
- W2034863213 sameAs 2034863213 @default.
- W2034863213 citedByCount "9" @default.
- W2034863213 countsByYear W20348632132020 @default.
- W2034863213 crossrefType "journal-article" @default.
- W2034863213 hasAuthorship W2034863213A5030139526 @default.
- W2034863213 hasAuthorship W2034863213A5031329778 @default.
- W2034863213 hasAuthorship W2034863213A5071614712 @default.
- W2034863213 hasAuthorship W2034863213A5087255984 @default.
- W2034863213 hasConcept C116569031 @default.
- W2034863213 hasConcept C155647269 @default.
- W2034863213 hasConcept C170493617 @default.
- W2034863213 hasConcept C178790620 @default.
- W2034863213 hasConcept C179104552 @default.
- W2034863213 hasConcept C185592680 @default.
- W2034863213 hasConcept C205688572 @default.
- W2034863213 hasConcept C2776351790 @default.
- W2034863213 hasConcept C2781346138 @default.
- W2034863213 hasConcept C511782168 @default.
- W2034863213 hasConcept C55493867 @default.
- W2034863213 hasConcept C55904794 @default.
- W2034863213 hasConceptScore W2034863213C116569031 @default.
- W2034863213 hasConceptScore W2034863213C155647269 @default.
- W2034863213 hasConceptScore W2034863213C170493617 @default.
- W2034863213 hasConceptScore W2034863213C178790620 @default.
- W2034863213 hasConceptScore W2034863213C179104552 @default.
- W2034863213 hasConceptScore W2034863213C185592680 @default.
- W2034863213 hasConceptScore W2034863213C205688572 @default.
- W2034863213 hasConceptScore W2034863213C2776351790 @default.
- W2034863213 hasConceptScore W2034863213C2781346138 @default.
- W2034863213 hasConceptScore W2034863213C511782168 @default.
- W2034863213 hasConceptScore W2034863213C55493867 @default.
- W2034863213 hasConceptScore W2034863213C55904794 @default.
- W2034863213 hasIssue "2" @default.
- W2034863213 hasLocation W20348632131 @default.
- W2034863213 hasOpenAccess W2034863213 @default.
- W2034863213 hasPrimaryLocation W20348632131 @default.
- W2034863213 hasRelatedWork W2003617130 @default.
- W2034863213 hasRelatedWork W2010390148 @default.
- W2034863213 hasRelatedWork W2017205412 @default.
- W2034863213 hasRelatedWork W2023260840 @default.
- W2034863213 hasRelatedWork W2030548352 @default.
- W2034863213 hasRelatedWork W2034863213 @default.
- W2034863213 hasRelatedWork W2059348484 @default.
- W2034863213 hasRelatedWork W2060118053 @default.
- W2034863213 hasRelatedWork W2081321239 @default.
- W2034863213 hasRelatedWork W2349124126 @default.
- W2034863213 hasVolume "43" @default.
- W2034863213 isParatext "false" @default.
- W2034863213 isRetracted "false" @default.
- W2034863213 magId "2034863213" @default.
- W2034863213 workType "article" @default.