Bidentate ferrocenylphosphines and their palladium(II)dichloride complexes — X-ray structural and NMR spectroscopic investigations and first results of their characteristics in the Pd-catalysed cooligomerisation of 1,3-butadiene with CO2

Synthesis and spectroelectrochemistry of transition metal carbonyls with 1,1′-bis(phosphino)metallocene ligands

“…For the Cr compounds the dippf and dcpf bite angles are respectively 3.5 and 4.2 larger than the dppf bite angle, while the dippf bite angle is 3.2 larger in the Mn compound. This is slightly less than the difference between [PdCl 2 (dippf)] (103.6 [30]), [PdCl 2 (dcpf)] (102.4 [12]) and [PdCl 2 (dppf)] (98.0 [31]). This is likely due to the greater steric congestion at the pseudo-octahedral chromium and manganese centers as opposed to the pseudo-square planar palladium.…”

Synthesis and electrochemistry of late transition metal complexes containing 1,1′-bis(dicyclohexylphosphino)ferrocene (dcpf). The X-ray structure of [PdCl2(dcpf)] and Buchwald–Hartwig catalysis using [PdCl2(bisphosphinometallocene)] precursors

“…The dcpf ligand adopts a synclinal staggered arrangement about the Pd atom; this is the most common arrangement for coordinated dppf [41]. Pd adopts a pseudo-square planar geometry with the two P atoms cis, similar to dppf and dippf analogues [24,25]. In addition, the P-Pd-P angle of 102.45°is 4.47°larger than the corresponding angle of the dppf analogue [25] and 2.43°larger than the corresponding angle of the dppr analogue [37] ( Table 4); this difference can be attributed to the steric hindrance of the bulky cyclohexyl groups [42].…”

Microwave Irradiated Cross Coupling of Carboxylic Acids and Crotyl Bromides: Efficient Application to Make Arachidonic Acid Esters

“…Propionic acid ester from Propionic acid and alkyl halides. various organic transformations involving potassium organotrifluoroborates [8] [9] [10] [11] [12]. The higher cone angle of P-Pd-P in PdCl 2 (d t bpf) may be improve its effectiveness as a catalyst.…”