Redox Properties of Ferrocenyl Ene-diynyl-Bridged Cp*(dppe)M–C≡C–1,4-(C₆H₄) Complexes

Abstract

Table of Contents Graphic moiety on the slower ESR timescale. For 2(PF 6) and 2(PF 6) 2 , optical charge transfer processes between the ferrocenyl moiety and the organometallic branches can also be observed, consistent with the increased coupling between the Ru(dppe)Cp* and Fc moieties that are linked by a linear conjugation pathway through the bridging-ligand backbone.

Synthesis, Electrochemistry, and Optical Properties of Highly Conjugated Alkynyl-Ferrocenes and -Biferrocenes

“…The desire to introduce a well-defined redox center, such as ferrocene, into a wide-ranging array of molecules, has led to the development of a rich library of new synthetic methods. , This abundance of techniques has resulted in ferrocene derivatives being incorporated into a wide variety of fields including catalysis, materials science, medicine, and a large number of different electrochemical applications. − One relatively recent addition to this synthetic tool kit was the synthesis and isolation of 1,1′-diiodoferrocene in high yields, which has been demonstrated within our group, through the use of an “oxidative purification” methodology, as well as by Nijhuis et al who utilized a sublimation-focused route. , Both of these methods generate the highly versatile synthon and its biferrocene equivalent (1,1‴-diiodobiferrocene) in high yields and with a high degree of purity. The realization of these synthons has opened up the use of classical cross-coupling methodologies.…”

Effect of bromine substitution on blue phosphorescent trans-(N-heterocyclic carbene)Pt(ii) acetylide complexes

“…The precursor compounds 1-bromo-4-ethynylbenzene (1) and 1,3-dibromo-5-ethynylbenzene (2) were synthesized by Sonogashira coupling followed by a deprotection reaction (Scheme S1 †). 37,38 The precursor NHC complex (Im) 2 PtCl 2 (5, Scheme S2 †) was obtained by a one-pot synthesis that was previously reported, through an in situ formed Ag(I)-NHC complex followed by transmetalation with K 2 PtCl 4 . 18 Compounds IPt-MB and IPt-DB were synthesized by a Hagihara coupling reaction, in which the aryl acetylide ligand was introduced (Scheme S2 †).…”

Electronic Properties of Poly‐Yne Carbon Chains and Derivatives with Transition Metal End‐Groups

“…The last three decades have witnessed a stunning collection of works devoted to the syntheses and characterizations of the redox properties, molecular and electronic structures of a variety of π‐conjugated carbon‐containing units spanning two transition metal organometallic termini Much of the interest for these so‐called molecular organometallic wires has been prompted by the rich redox chemistry of the different metal termini which encompass several transition metal elements such as, non‐exhaustively, Cr, Mn, Fe, Co, Mo, Ru, W, Re, Os, Pt, and Au organometallic fragments . Additionally, the efficiency of diverse linkers allows to convey electronic and magnetic communication between the termini.…”