104646-93-7Relevant academic research and scientific papers
Gallium(III) halide complexes with phosphines, arsines and phosphine oxides - a comparative study
Cheng, Fei,Codgbrook, Hannah L.,Hector, Andrew L.,Levason, William,Reid, Gillian,Webster, Michael,Zhang, Wenjian
, p. 4147 - 4155 (2008/10/09)
The phosphine oxide complexes [GaX3(Me3PO)] and [(GaX3)2{μ-o-C6H4(CH2P(O)Ph2)2}] have been prepared and characterised by microanalysis, IR and multinuclear NMR (1H, 13C{1H}, 31P{1H} and 71Ga) spectroscopy. The structures of [GaCl3(Me3PO)], [(GaBr3)2{μ-o-C6H4(CH2P(O)Ph2)2}] and of the ionic product [GaI2(Me3PO)2][GaI4] have been determined and show that the Lewis acidity of the gallium halides towards phosphinoyl ligands diminishes as the halogen becomes heavier. The [GaX3(Ph3E)] (X = Cl, Br or I; E = P or As) and [(GaX3)2{μ-o-C6H4(CH2PPh2)2}] (X = Br or I) have 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 of R3P to R3PO.
Adducts of GaI3 and InI3 with Ph3P and Ph3As
Baker,Kloo, Lars A.,Rickard, Clifton E.F.,Taylor, Michael J.
, p. 249 - 255 (2007/10/03)
Adducts Ph3PGaI3 and Ph3AsGaI3 obtained by adding the ligands to Et2OGaI3 have been investigated by 71Ga NMR, IR/Raman spectroscopy and X-ray diffraction, Et2OInI3 with Ph3P gives (Ph3P)3(InI3)2. Ph3As yields (Ph3As)3(InI3)2 · H2O as rhombohedral crystals whose structure was solved by X-ray diffraction. Both these indium complexes contain Ph3EInI3 molecules alongside five-coordinate aclducts (Ph3E)2InI3 with the Ph3E ligands attached in axial sites by long and unequal bonds to a planar InI3 unit. Vibrational assignments are made for Ph3PGaI3, Ph3AsGaI3, Ph3EInI3 and (Ph3E)2InI3 (E = P or As).
