133850-81-4Relevant articles and documents
Unsymmetrical dirhenium complexes that contain [Re2]6+ and [Re2]5+ cores complexed by tridentate ligands with P2O and P2N donor sets
Kuang, Shan-Ming,Fanwick, Phillip E.,Walton, Richard A.
, p. 405 - 412 (2002)
The quadruply bonded dirhenium(III) complex (n- Bu4N)2Re2Cl8 reacts with tridentate ligands that contain essentially planar P,O,P donor sets to afford the complexes Re2Cl6(η3-Ls
Synthesis and coordination chemistry of phosphine oxide decorated dibenzofuran platforms
Rosario-Amorin, Daniel,Duesler, Eileen N.,Paine, Robert T.,Hay, Benjamin P.,Delmau, Laetitia H.,Reilly, Sean D.,Gaunt, Andrew J.,Scott, Brian L.
experimental part, p. 6667 - 6681 (2012/08/08)
A four-step synthesis for 4,6-bis(diphenylphosphinoylmethyl)dibenzofuran (4) from dibenzofuran and a two-step synthesis for 4,6-bis(diphenylphosphinoyl) dibenzofuran (5) are reported along with coordination chemistry of 4 with In(III), La(III), Pr(III), Nd(III), Er(III), and Pu(IV) and of 5 with Er(III). Crystal structure determinations for the ligands, 4·CH3OH and 5, the 1:1 complexes [In(4)(NO3)3], [Pr(4)(NO 3)3(CH3CN)] ·0.5CH3CN, [Er(4)(NO3)3(CH3CN)]·CH3CN, [Pu(4)Cl4]·THF and the 2:1 complex [Nd(4)2(NO 3)2]2(NO3)2· (H2O)·4(CH3OH) are described. In these complexes, ligand 4 coordinates in a bidentate POP′O′ mode via the two phosphine oxide O-atoms. The dibenzofuran ring O-atom points toward the central metal cations, but in every case it is more than 4 A from the metal. A similar bidentate POP′O′ chelate structure is formed between 5 and Er(III) in the complex, {[Er(5)2(NO3)2](NO 3)·4(CH3OH)}0.5, although the nonbonded Er...Ofuran distance is reduced to ～3.6 A. The observed bidentate chelation modes for 4 and 5 are consistent with results from molecular mechanics computations. The solvent extraction performance of 4 and 5 in 1,2-dichloroethane for Eu(III) and Am(III) in nitric acid solutions is described and compared against the extraction behavior of n-octyl(phenyl)-N,N- diisobutylcarbamoylmethyl phosphine oxide (OφDiBCMPO) measured under identical conditions.
Cationic organomagnesium complexes as highly active initiators for the ring-opening polymerization of ε-caprolactone
Ireland, Benjamin J.,Wheaton, Craig A.,Hayes, Paul G.
experimental part, p. 1079 - 1084 (2010/05/01)
Species of the form [LH]+[BR4]- (R = pentafluorophenyl, phenyl, 1) were synthesized by reaction of Broensted acids with a novel bis-phosphinimine ligand (L = 4,6-(MesN=PPh2) 2dibenzofuran). Corresponding cationic complexes [LMg nBu]+[BR4]- (2) were produced by reaction of [MgnBu2] with [LH]+[BR 4]-. Organomagnesium species 2a and 2b exhibit extremely high activity as initiators for the polymerization of ε-caprolactone, yielding near-quantitative conversion of monomer to high molecular weight (> 2.0 × 105 g/mol) polymer in 4 min at ambient temperature.
