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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Phosphinooxazolines as assembling ligands in heterometallic complexes
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Phosphinooxazolines as assembling ligands in heterometallic complexes

机译：膦恶唑啉在异金属配合物中的组装配体

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It is shown that phosphinooxazolines such as (2-oxazoline-2-ylmethyl)diphenylphosphine 1 can be used as P,N assembling ligands for the synthesis of heterometallic complexes.These were obtained in a stepwise manner from the iron carbonyl complexes containing one,[Fe(CO)_4(PCH_2-oxazolme-P)] 2,or two,trans-[Fe(CO)_3(PCH_2-oxazoline-P)_2] 6,P-boimd phosphinooxazoline ligands.These metalloligands were then reacted with metal complexes.With 2,complete ligand transfer from Fe to the second metal (Pd) was sometimes observed.The metal-metal bonded complex [(OC)_4Fe(mu-PCH_2-oxazoline-P,N)PdCl_2] 3 was of limited stability,whereas the trinuclear complex trans-[{(OC)_4Fe(mu-PCH_2-oxazoline-P,N)}_2CoCl_2]4,in which 2 functions as a N-donor metalloligand toward the tetrahedral Co(II) centre,was stable and could be fully characterised by X-ray diffraction.This complex catalyses the oligomerization of ethylene to give linear a-olefins in the range C_4-C_(26),with a maximum of the Schulz-Flory distribution around C_6.The complex [{(OC)_4Fe(mu-PCH_2-oxazoline-P,N)}_2HgI_2] 5 was also prepared from 6.With the metalloligand 6,the Fe->Pd and Fe->Co metal-metal bonded compounds trans-[(OC)_3Fe(mu-PCH_2-oxazoline-P,N)_2Pd(NCMe)](BF_4)_2 8 and trans-[(OC)_3Fe(mu-PCH_2-oxazoline-P,N)_2CoCl_2] 9 were obtained.
机译：结果表明，膦氧恶唑啉如（2-恶唑啉-2-基甲基）二苯基膦1可用作P，N组装配体，用于合成杂金属配合物。它们是从含一种[，]的羰基铁配合物中逐步获得的。 Fe（CO）_4（PCH_2-恶唑甲-P）] 2或两个反-[Fe（CO）_3（PCH_2-恶唑啉-P）_2] 6，P-键合膦恶唑啉配体。然后使这些金属配体与金属反应在2，有时观察到从Fe到第二金属（Pd）的完全配体转移。金属-金属结合的复合物[（OC）_4Fe（mu-PCH_2-恶唑啉-P，N）PdCl_2] 3的稳定性有限。稳定的三核配合物反-[{（（OC）_4Fe（mu-PCH_2-恶唑啉-P，N）} _ 2CoCl_2] 4，其中2个作为向四面体Co（II）中心的N供体金属配体起作用）该配合物催化乙烯的低聚反应，生成范围为C_4-C_（26）的线性α-烯烃，其中舒尔茨-弗洛里分布最大还从6制备了配合物[{（（OC）_4Fe（mu-PCH_2-恶唑啉-P，N）} _ 2HgI_2] 5）。用金属配体6，Fe-> Pd和Fe-> Co金属-金属键化合物反式-[（（OC）_3Fe（mu-PCH_2-恶唑啉-P，N）_2Pd（NCMe）]（BF_4）_2 8和反式-[（OC）_3Fe（mu-PCH_2-恶唑啉-P，N）获得了_2CoCl_2] 9。

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