So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Tennyson, Andrew G.; Khramov, Dimitri M.; Varnado, C. Daniel; Creswell, Philip T.; Kamplain, Justin W.; Lynch, Vincent M.; Bielawski, Christopher W. researched the compound: Bromoferrocene( cas:1273-73-0 ).Electric Literature of C10BrFe.They published the article 《Indirectly Connected Bis(N-Heterocyclic Carbene) Bimetallic Complexes: Dependence of Metal-Metal Electronic Coupling on Linker Geometry》 about this compound( cas:1273-73-0 ) in Organometallics. Keywords: indirectly connected bis heterocyclic carbene diiron preparation electronic coupling; linker geometry electronic coupling imidazolylidene azido isothiocyanato ferrocene; crystal mol structure electrochem redox imidazolylidene azido isothiocyanato ferrocene. We’ll tell you more about this compound (cas:1273-73-0).
Reaction of 1,1′,3,3′-tetra(tert-amyl)benzobis(imidazolylidene) (1) with 2 equivalent of FcN3 or FcNCS afforded bisadducts [(FcN3)2(1)] (2) or [(FcNCS)2(1)] (3), resp. (Fc = ferrocene). These represent the first examples of complexes comprising metals indirectly connected to the carbene atoms of N-heterocyclic carbenes (NHCs) via their ligand sets. Cyclic and differential pulse voltammetry indicated that bis(NHC) 1 facilitated significant electronic coupling between ferrocene centers in 2 (ΔE = 140 mV), but not in 3. The different degrees of electronic interaction are due to geometric factors: the triazene linker in 2 is nearly coplanar with the bis(NHC) scaffold, whereas the isothiocyanate linker is orthogonal, as determined by x-ray crystallog. Employing this “”indirect connection”” strategy should enable tuning of metal-metal interactions by simple alteration the organic linker between NHC and MLn fragments rather than complete redesign thereof. Given that NHC-reactive azide or isothiocyanate groups can be incorporated into both organic and inorganic compounds, this approach is envisioned to facilitate access to otherwise inaccessible catalysts and materials.
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Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com