Chelating properties of 2-((diphenylphosphino)methyl)pyridine N,P-dioxide and 2,6-bis((diphenylphosphino)methyl)pyridine N,P,P'-trioxide toward f-element ions

(Pyrazolyl)-(phosphinoyl)pyridine iron(II), cobalt(II) and nickel(II) complexes: Synthesis, characterization and ethylene oligomerization studies

“…In a typical experiment, a fresh sample from the reaction mixture was quickly transferred to an NMR tube containing deuterated chloroform (CDCl), sealed and the 31 P NMR spectra acquired at intervals. The 31 P ( 1 H) NMR spectrum showed sharp singlet signals at about d À11 ppm as expected for the phosphine ligands L1a and L2a [23,31], and another singlet at around 29 ppm. The signal at 29 ppm was attributed to the oxidized phosphine in L1b and L2b consistent with literature findings for related compounds [32].…”

Synthesis and functionalization of organophosphorus‐substituted amines with PCH2NH fragments

“…The novel organophosphorus amines 1-12, 22-40, and amides 13-21 present interest as potentially useful compounds (cf. [14,15]). The structures of organophosphorus-substituted amines and Tables 1-4).…”

“…Phosphinates 14 was prepared analogously. (15). A mixture of 10 g of diethyl Nmethylaminomethylphosphonate 1, 3.5 g of 95% formic acid and 30 mL toluene was refluxed with a Dean-Stark trap until the water release was complete.…”

Synthesis and Characterization of Partially Substituted at Lower Rim Phosphorus Containing Calix(4)arenes

“…It is well known that calixarenes with different substituents at the lower rim possess versatile extracting and complexation properties toward metal cations [7][8][9][10]. On the other hand introducing of a phosphorus moiety into calixarene molecules increases their complexation ability [11][12][13][14]. Nevertheless, immobilization of calixarenes on polymeric supports and the synthesis of polymers with calixarenes as co-monomers are still not widely polpular.…”