been prepared and their structural and spectroscopic properties compared with those of the phosphinoyl complexes. The results, and competitive solution NMR studies, show that Ga(III) binds the hard R3PO in preference to the softer phosphine or arsine ligands. Hydrolysis of gallium(III) phosphines is shown to lead to [R3PH][GaX4], but in contrast to some other p-block halides, GaX3 do not promote air-oxidation
制备了氧化膦配合物[GaX 3(Me 3 PO)]和[(GaX 3)2 μ- o -C 6 H 4(CH 2 P(O)Ph 2)2 }],并通过微分析对其进行了表征,红外和多核NMR(1 H,13 C 1 H},31 P 1 H}和71 Ga)光谱。[GaCl 3(Me 3 PO)],[(GaBr 3)2 μ- o -C 6 H 4(CH 2 P(O)Ph 2)2 }]和离子产物[GaI 2(Me 3 PO)2 ] [GaI 4 ]的测定已经表明,卤化
镓对膦酰基
配体的
路易斯酸性降低了卤素变得更重。[GaX 3(Ph 3 E)](X = Cl,Br或I; E = P或As)和[(GaX 3)2 μ- o -C 6 H 4(CH 2 PPh 2)2}](X = Br或I)已制备,并且其结构和光谱性质与膦酰基配合物相比。结果和竞争性溶液NMR研究表明,Ga(III)优先将硬R 3