Ferrocene-based ligands in ruthenium alkylidene chemistry

Synthesis, Characterization, and Electrochemistry of Compounds Containing 1-Diphenylphosphino-1′-(di-tert-butylphosphino)ferrocene (dppdtbpf)

“…While the symmetrically substituted 1,1′-bis(phosphino)ferrocenes such as 1,1′-bis(diphenylphosphino)ferrocene (dppf) and 1,1′-bis(di- tert -butylphosphino)ferrocene (dtbpf) , (Chart ) continue to be actively investigated, closely related asymmetric compounds have not been given equal consideration. Although Cullen first reported 1-diphenylphosphino-1′-di- tert -butylphosphinoferrocene (dppdtbpf) in 1985, it has received surprisingly little attention . In addition to the synthesis and characterization of dppdtbpf the synthesis of [PdCl 2 (dppdtbpf)] has been reported .…”

Synthesis and Structural Characterisation of Palladium and Group‐12 Metal Complexes with a Hybrid Phosphanylphosphonate Ferrocene Ligand

“…This applies particularly to donors whose asymmetry arises from the presence of two different phosphorus groups. To date only a few ferrocene diphosphanes Ph 2 PfcPR 2 {fc = ferrocene‐1,1′‐diyl; PR 2 = PPh( t Bu),3 P( t Bu) 2, 4 and P(C 6 H 4 Y‐4) 2 , Y = OMe, CF 3 5}, phosphanylphosphonites Ph 2 PfcP(OR) 2 ,6 and dppf semi‐chalcogenides Ph 2 PfcP(E)R 2 (E = O,7 S, and Se8) have been reported in the literature, which stands markedly against the vast chemistry of the “popular”, symmetric ferrocene diphosphane 1,1′‐bis(diphenylphosphanyl)ferrocene (dppf) 9…”

Tailoring the Fe → Pd interaction in cationic Pd(ii) complexesviastructural variation of the ligand scaffold of sterically demanding dppf-analogs and their P,N-counterparts

“…Known 1,1'-diphospha substituted dppf-analogues A: R = R' = Ph, Mes, t Bu etc. ; 23,27,32,[38][39][40][41][42][43][44][45][46][47][48] 1,1'unsymmetrically substituted diphenylphosphano ferrocenes B: X = CHO, 49,50 COOH, 51 COOMe, 51 CONEt 2 , 52 CvCBr 2 , 49 CuCH, 49 HCvCH 2 , 53 CuN, 54 CH 2 OH, 34 SH, 55 oxazoline, 56 PO(OEt) 2 , 57 COOH, 58,59 OMe, 60 C 5 H 4 N, 61 bipyridine, 62 HCvN(C 6 F 5 ), 63,64 CH 2 NH (CHMePh), 50 CHN(CHMePh), 50 3,5-dihydroazepine, 65 NuC, 54 NvC (NH i Pr) 2 , 66 NvC(NHC 6 H 11 ) 2 , 66 NvC(NHXyl) 2 , 66 NH(CO)CH 2 PPh 2 , 67 and NH(CH 2 ) 2 PPh 2 ; 67 1,1'-unsymmetrically substituted di-tert-butylphosphano ferrocenes C; 68,69 and bis( phosphinimine) ligands D: R = Et and Ph. 70 Analogous heteroditopic P,N-ligands, presented in this report, E: R = Ph and Mes.…”