Shanghai has a rare earth metal - phosphorus bond is to build research progress

Phosphorus bonding of transition metal-containing complexes of the theoretical development not only for bonding a significant contribution , and that such complexes in the field of synthetic chemistry have important practical applications . In the past few decades , a large variety of transition metal-containing complexes of phosphate bond is synthesized , and the phosphorous containing rare earth complexes bond is an exception. This is because the rare earth metal ion is a hard Lewis acid , and phosphorus is a soft Lewis base , according to Pearson's HSAB (HSAB) principle , rare earth phosphate bonding is matched. Before 2008 only about a dozen cases of rare earth phosphino complexes , no phosphine carbene complexes of rare earth road, but only in rare earth metal phosphide is an inorganic solid form ionic bonds (LnP) exists.

Chinese Academy of Sciences Shanghai Institute of Organic Chemistry State Key Laboratory of Organometallic Chen Yaofeng research group carried out a rare earth phosphate bonding work , research into rare earth metal ions and phosphorus key mode . In 2008, the Task Force and the U.S. Los Alamos National Laboratory Kiplinger research group reported the a light rare earth (Nd) and a heavy rare earth (Lu) bridging phosphine carbene complexes . They then synthesized the first soluble rare earth metal phosphide , and characterized by solution NMR and single crystal X-ray diffraction characterization . This work is of rare earth metals and soft Lewis bases ligand bonding a breakthrough , rich rare earth metal complexes of the structural system and bonding mode.

Recently, they use the Task Force developed tridentate nitrogen ligand synthesis of rare earth scandium bridged phosphine carbene complexes . Found rare scandium phosphine carbene complexes bridged only by PP coupling of a reducing agent 2e bipyridine , triphenyl phosphine sulfide and selenium phosphine, a series of unsaturated addition reaction of the substrate can even activated carbon monoxide (CO) and metal carbonyl compounds , resulting oxygen CC bond and triple bond coupling rupture of generating novel phosphine compound. This work has revealed a rare earth - phosphate bond does not match the reactivity brought novel .

The work from the National Natural Science Fund Committee , Ministry of Science , Chinese Academy of Sciences and the Shanghai Municipal Science and Technology Commission funding.


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