627097-91-0Relevant academic research and scientific papers
Synthesis, structure and reactivity of cis-[PtL2(1-alkenyl)2] complexes
Sivaramakrishna, Akella,Makhubela, Banothile C.E.,Zheng, Feng,Su, Hong,Smith, Gregory S.,Moss, John R.
, p. 44 - 52 (2009/01/31)
The synthesis and characterization of several new bis(1-alkenyl)platinum(II) complexes have been carried out. The structure of cis-[Pt(dppp)((CH2)6CH{double bond, long}CH2)2] has been determined by X-ray crystallography. The stability and reactivity of the compounds, cis-[PtL2((CH2)nCH{double bond, long}CH2)2] (n = 3 or 4 and L2 = 1,3-bis(diphenylphosphino)propane (dppp), 1,2-bis(diphenylphosphino)ethane (dppe), L = PPh3) is strongly dependent on the nature of ligand systems. It is found that the insertion of carbon monoxide into the metal-carbon bonds of the platinum alkenyl complexes is possible. Other reactions including transmetalation, intermolecular alkenyl migrations, oxidative addition of methyl iodide are described and the thermal decomposition of the bis(alkenyl) complexes are also reported.
Halfsandwich-type complexes of iridium with tetramethylcyclopentadienyl as ligand
Mahr,Nuernberg,Werner
, p. 91 - 98 (2008/10/08)
The iridium(I) complexes [(η5-C5HMe4)Ir(C2H 4)2] (2) and [(η5-C5HMe4)Ir(CO)2] (4), which have been prepared from [IrCl(C2H4)2]2 or [IrCl(CO)3]n and LiC5HMe4, react with tosylchloride as well as with X2 (X = Cl, Br, I) by oxidative addition to yield the corresponding iridium(III) compounds. Treating the complexes [(η5-C5HMe4)IrX2]n (7-9) with CO or PR3 leads to a cleavage of the halide bridges and to the formation of the mononuclear products [(η5-C5HMe4)IrX2(CO)] (10, 11) and [(η5-C5HMe4)IrX2(PR 3)] (12-20), respectively. The molecular structure of [(η5-C5HMe4)IrBr2(PiPr 3)] (18) was determined crystallographically. The reactions of 8 (X = Br) and 9 (X = I) with Ph2P(CH2)nPPh2 (n = 1 or 2) afford the bridged compounds [{(η5-C5HMe4)IrX2} 2{μ-Ph2P(CH2)nPPh 2}] (21-23). The dihalide complexes [(η5-C5HMe4)IrI2(PPh 3)] (16) and [(η5-C5HMe4)IrX2(PiPr 3)] (17-19) react with hydride sources to give the dihydrido- and monohydrido derivatives [(η5-C5HMe4)IrH2(PPh 3)] (24) and [(η5-C5HMe4)IrH(X)(PiPr3)] (25-27). The related dimethyl and monomethyl compounds [(η5-C5HMe4)Ir(CH3) 2(PiPr3)] (28) and [(η5-C5HMe4)IrCH3(I)(PiPr 3)] (29) have been obtained from the dihalide precursors 18 or 19 and CH3MgI in the molar ratio of 1:2 or 1:1, respectively.
