@article {5072,
	title = {Synthesis and structure of the hafnium alkylidene complex [P2Cp]Hf=CHPh(Cl) ([P2Cp] = (eta(5)-C5H3-1,3-(SiMe2CH2PPr2i)(2)))},
	journal = {Organometallics},
	volume = {20},
	number = {8},
	year = {2001},
	note = {ISI Document Delivery No.: 427FWTimes Cited: 14Cited Reference Count: 16},
	month = {Apr},
	pages = {1608-1613},
	type = {Article},
	abstract = {The synthesis, structural characterization, and solution behavior of hafnium complexes stabilized by the potentially tridentate ancillary ligand [P2Cp] ([P2Cp] = (eta (5)-C5H3-1,3-(SiMe2CH2PPr2i)(2))) are described. The reaction of [P2Cp]Li with HfCl4(THT)(2) produces the hafnium trichloride complex [P2Cp]HfCl3 (1), the structure of which was determined by X-ray crystallography. Trichloride 1 is isostructural with the analogous zirconium complex [P2Cp]ZrCl3 (2) in the solid state, but in solution 1 exists as an equilibrium mixture of two isomers that interconvert by fluxional phosphine coordination. Treatment of 1 with 2 equiv of KCH2Ph, followed by thermolysis, yields the first structurally characterized hafnium alkylidene complex, [P2Cp]Hf=CHPh(Cl) (3). A crystal structure determination obtained for 3 shows this complex to be isostructural with the zirconium analogue [P2Cp]Zr=CHR(Cl) (4). The primary difference between the Hf systems presented here and the previously studied Zr analogues is that metal-ligand bonding is stronger in the former, which accounts for shorter bond distances, a greater degree of chemically inertness, and the divergent solution behaviors observed for the trichloride derivatives 1 and 2.},
	keywords = {BENZYL, CRYSTAL-STRUCTURE, DERIVATIVES, MOLECULAR-STRUCTURE, PH, SIME3, trichloride, ZIRCONIUM},
	isbn = {0276-7333},
	url = {<Go to ISI>://000168395000016},
	author = {Fryzuk,Michael D. and Duval, P. B. and Patrick, B. O. and Rettig, S. J.}
}
@article {3938,
	title = {The effect of organotin compounds on the permeability of model biological membranes},
	journal = {Applied Organometallic Chemistry},
	volume = {11},
	number = {5},
	year = {1997},
	note = {ISI Document Delivery No.: WZ733Times Cited: 7Cited Reference Count: 28Pacifichem 95 Meeting on Safety and Environmental Effects of Organometallics1995HONOLULU, HI},
	month = {May},
	pages = {369-379},
	type = {Proceedings Paper},
	abstract = {The efflux of dimethylarsinic acid (DMA) from liposomes formed from egg phosphatidylcholine (EPC) is increased when tributyltin chloride (TBT) is added to the extraliposomal compartment; however the addition of monobutyltin trichloride (MBT) slows down the efflux. When the liposomes are prepared from EPC and organotin compounds, different mechanisms for DMA efflux seem to operate: TBT-EPC liposomes show a mixture of facilitated and passive diffusion; MBT-EPC liposomes show only passive diffusion. The facilitated diffusion of DMA(-) seems to be stopped by the addition of TBT to the extraliposomal compartment. (C) 1997 by John Wiley \& Sons, Ltd.},
	keywords = {bilayer, DIMETHYLARSINIC ACID, efflux, egg, ERYTHROCYTE, EXCHANGE, facilitated diffusion, LIPOSOMES, membrane modification, monobutyltin, NMR, PHOSPHATIDYLCHOLINE, tributyltin chloride, trichloride},
	isbn = {0268-2605},
	url = {<Go to ISI>://A1997WZ73300003},
	author = {Cullen, W. R. and Herring, F. G. and Nwata, B. U.}
}
