Improved approaches and structures of new ferrocenyl carbene complexes of chromium, tungsten, and molybdenum

Preparation, Properties, and Reactivity of (Aminoferrocenyl)(ferrocenyl)carbene(pentacarbonyl)chromium(0) as Bulky Isolobal Trimetallo‐amide

“…A similar NH ··· C 5 H 5 contact has been reported recently for diferrocenyl tosylhydrazone, which displays a very strong NH ··· Fe hydrogen bond 29. The proton resonance of H 6 ( δ = 10.90 ppm in CD 2 Cl 2 ) is indeed shifted to lower field, compared to other aminocarbene(pentacarbonyl) chromium(0) complexes [(Fc)(NH R )C=Cr(CO) 5 ( R = Me, Et, Pr, Bu, Pent): δ = 9.45–9.52 ppm in CDCl 3 17d,20a,20c]. The shift is even more pronounced compared to those of amide 4 ( δ = 8.95 ppm in [D 6 ]DMSO) and thioamide 5 ( δ = 8.29 ppm in CD 2 Cl 2 ) 22…”

An expedient approach to ferrocenyl thioamides via Fischer carbenes

“…The preparation of ferrocenylated group 6 metals Fischer-type carbenes was carried out using the methodology previously described elsewhere [28]. 3266, 2052, 1970, 1910, and 1866 d: 70.4,70.5,73.5,87.4,207.0,212.7,268.2.…”

Thin films of molecular materials synthesized from fisher's carbene ferrocenyl: Film formation and electrical properties

“…The [(ethoxy) (ferrocenyl) methylidene] pentacarbonyl chromium(0), molybdenum(0) and tungsten(0) compounds were prepared from ferrocene with t-BuLi and M(CO) 6 (M=Cr, W, Mo) as previously reported by some of the authors of this paper [15]. The molecular materials' electrosynthesis was performed inside an electrocrystallization cell with anodic and cathodic chambers and glass frit between the two compartments.…”