Insertion of a phospholide unit into a metal–metal bond: Synthesis and X-ray structure of [Ru3(CO)9(μ:η1:η5-PC4H2Me2)(η1-C6H5)]

High variety of coordination modes of π-conjugated phospholes in dinuclear rhenium carbonyls. Fluxional behavior of σ,π-complexes

“…Due to the versatility of phospholes and metal carbonyl complexes, we have been exploring the interaction of both chemical entities. We have found σ-and σ,π-complexes, metal-metal bond cleavage and formation of derivatives where the phosphole ligand have undergone P-P and P-C bonds cleavage, C-H bond activation or partial hydrogenation of phosphorus ring [8,[38][39][40][41][42]. Herein, we have studied the reactivity of 2,5-disubstituted phenylphosphole derivatives with [Re 2 (CO) 8 (CH 3 CN) 2 ] to investigate coordination modes that could afford novel types of rhenium complexes.…”

“…The solvents were previously dried and distilled following standard methods [43]. [Re 2 (CO) 8 (CH 3 CN) 2 ], 2,5-bis(2-thienyl)-1phenylphosphole (btpp); 2,5-bis(2-pyridyl)-1-phenylphosphole (bpypp) and 1,2,5triphenylphosphole (tpp) were synthesized according to published procedures [44,45]. NMR spectra were recorded on Bruker Avance AM300 and AM500 spectrometers.…”

“…Reaction of [Re 2 (CO) 8 [52,53]. The 31 P{ 1 H} NMR spectrum revealed a singlet at δ = +36.0 ppm, which was shifted to low field with respect to the free ligand (δ = +12.7 ppm), suggesting P-bonding of the btpp ligand.…”

“…Structural diversity of their transition metal complexes has been facilitated by the ability of act as both σ-and π-donor ligands, sometimes simultaneously [8]. Phosphole-complexes have been used in many catalytic transformations of synthetic relevance, such as hydroformylation, hydrosilylation, asymmetric allylic substitution and single and double A 3coupling [9][10][11][12][13][14][15].…”

“…Herein, we have studied the reactivity of 2,5-disubstituted phenylphosphole derivatives with [Re 2 (CO) 8 (CH 3 CN) 2 ] to investigate coordination modes that could afford novel types of rhenium complexes. Thus, we report the synthesis and structural characterization of a new series of phosphole-rhenium complexes from the reaction of [Re 2 (CO) 8 (CH 3 CN) 2 ] with the π-conjugated phosphole derivatives 2,5-bis(2-thienyl)-1phenylphosphole (btpp), 2,5-bis(2-pyridyl)-1-phenylphosphole (bpypp) and 1,2,5triphenylphosphole (tpp).…”