Cyclopentadienyliron Complexes Of Arenes Research Articles

Synthesis and optical properties of cationic cyclopentadienyl iron complexes with diphenylacetylene chromophores

Cationic cyclopentadienyl iron complexes of arenes are applied in photopolymerization and photocatalysis because of their good photophysical and photochemical properties. In this study, a series of cationic cyclopentadienyl iron complexes with diphenylacetylene chromophores (Aky-Fc) was obtained via nucleophilic substitution and Suzuki coupling reactions. The linear and nonlinear optical properties of the obtained molecules were tuned by phenylethynyl linkages. The UV–Vis absorption spectra showed that increasing the conjugation by substituting phenylacetylene spacer resulted in a red shift in the absorption bands and much stronger absorption in Aky-Fc than in (η6-cumene) (η5-cyclopentadienyl) iron hexafluorophosphate (I-261). With the single-beam Z-scan technique, the nonlinear absorption of Aky-Fc showed that Aky-Fc (8), (9), and (10) had good nonlinear optical ability, and the two photon absorption (TPA) cross section σ was approximately 10times that of I-261.

Synthesis and optical properties of novel D–π–A–π–D type cationic cyclopentadienyliron complexes of arenes

With the enlarged and annulated ICT conjugation systems, three new cationic cyclopentadienyliron complexes exhibited significantly better third-order NLO absorption properties than the commercial cyclopentadienyliron arene complexes I-261.

ChemInform Abstract: Synthesis and Reactivity of Arenes Coordinated to Cyclopentadienyliron Cations

Abstract Over the past few decades, there has been tremendous interest in the chemistry of arenes coordinated to transition metal moieties due to their applications in the fields of organic and polymer synthesis. The electrophilicity of coordinated arenes allows for reactions with a number of carbon-, oxygen-, nitrogen- and sulfur-containing nucleophiles. This review describes the synthesis and reactivity of both mono- and polyiron arene complexes. Spectroscopic and electrochemical methods for the characterization of these coordination compounds are presented. The important synthetic applications of arene cyclopentadienyliron complexes are also described.

A Novel Approach to the Synthesis of Some 2-Aryl Alkanoic Acid Esters

Abstract A novel route to the synthesis of some 2-aryl alkanoic acid esters has been achieved. Aromatic nucleophilic substitution of various arene cyclopenta-dienyliron complexes with ethyl ethylacetoacetate and ethyl methylacetoacetate produced the complexed alkanoic acid esters. Photolysis of these complexes resulted in the liberation of the free esters in good yields.

The synthesis of some complexed ketones or sulfones by oxidation of η 6-arene-η 5-cyclopentadienyliron cations or η 6-arenedi-η 5-cyclopentadienyliron dications

Di-η 5-cyclopentadienyliron complexed dications of 9,10-dihydroanthracene, xanthene, thioxanthene and diphenylmethane derived from ligand exchange reactions but without their prior isolation were oxidized with KMnO 4 to give, respectively, the dications of anthraquinone, xanthone, thioxanthone and benzophenone, isolated as their dihexafluorophosphate salts. Cyclopentadienyliron complexes of arenes containing a sulfide function were oxidized by m-chloroperbenzoic acid to the corresponding complexed sulfones, and sulfones prepared in this way include the hexafluorophosphate salt of the η 6- p-tolysulfonylbenzene, thioxanthene-10,10-dioxide, 9,9-dimethylthioxanthene-10,10-dioxide or dibenzothiophene-9,9-dioxide-η 5-cyclopentadienyliron cation.

ChemInform Abstract: ARENE LIGAND EXCHANGE IN ARENE CYCLOPENTADIENYLIRON COMPLEXES

Chemischer InformationsdienstVolume 5, Issue 21 Organoelement Compounds ChemInform Abstract: ARENE LIGAND EXCHANGE IN ARENE CYCLOPENTADIENYLIRON COMPLEXES A. N. NESMEYANOV, Search for more papers by this authorN. A. VOL'KENAU, Search for more papers by this authorL. S. SHILOVTSEVA, Search for more papers by this authorV. A. PETRAKOVA, Search for more papers by this author A. N. NESMEYANOV, Search for more papers by this authorN. A. VOL'KENAU, Search for more papers by this authorL. S. SHILOVTSEVA, Search for more papers by this authorV. A. PETRAKOVA, Search for more papers by this author First published: May 28, 1974 https://doi.org/10.1002/chin.197421366Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinked InRedditWechat No abstract is available for this article. Volume5, Issue21May 28, 1974 RelatedInformation