Coordination Properties of Klaeui's Tripodal Oxygen Donor toward Zirconium(IV)
Author(s)
Date issued
1998
In
Organometallics
Vol
12
No
17
From page
2490
To page
2494
Subjects
crystal structure zirconium cobalt cyclopentadienyl phosphinyl mol structure zirconium cobalt cyclopentadienyl phosphinyl Arbuzov dealkylation alkoxyphosphinyl cobalt cyclopentadienyl zirconium zirconium cobalt cyclopentadienyl phosphinyl prepn structure
Abstract
The coordination properties of [(?5-C5H5)Co{PR2(O)}3]- (R = OEt (LOEt-), Et (LEt-)) toward Zr(IV) were studied and compared to related cyclopentadienyl complexes. Addn. of 2 equiv of LOEt- to [ZrCl4(THF)2] yields labile [Zr(LOEt)2Cl2] (2), which undergoes Arbuzov dealkylation to yield a dinuclear, seven-coordinate complex 1 (shown as I, R = OEt). Reaction of 2 with MeLi yields the metathesis product LiLOEt. Addn. of 2 equiv of AgOTos to 2 affords octahedral [Zr(LOEt)2](OTos)2 (3). Reaction of [ZrCpCl3] with LOEt- leads to Cp- displacement to give [ZrLOEtCl3] (4). Addn. of 2 equiv of LEt- to [ZrCl4(THF)2] yields octahedral [Zr(LEt)2](Cl)2 (5). Compds. 1, 3, 4, and 5 were characterized by x-ray crystallog. [on SciFinder(R)]
Publication type
journal article