Synthesis of a Heterometallic Trinuclear Cluster Containing Ruthenium and Cobalt and Its Reactivity with Internal Alkynes

Synthesis of a Heterometallic Trinuclear Cluster Containing Ruthenium and Cobalt and Its Reactivity with Internal Alkynes
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含钌钴异金属三核团簇的合成及其与内炔烃的反应

DOI:
10.1021/om300371g
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发表时间:
2012
期刊:
影响因子:
2.8
通讯作者:
Hiroharu Suzuki
Hiroharu Suzuki
中科院分区:
化学2区
文献类型:
--
作者:
M. Nagaoka;T. Takao;Hiroharu Suzuki

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在LiBEt3 H存在下,由(Cp*Ru)2(Cp*Co)(μ-H)3(μ3-H)(1)(Cp*=η5-C5Me5)通过Cp*Ru(μ-H)4RuCp*与(Cp*CoCl2)2反应合成了一个由Ru和Co组成的四氢簇合物。X-射线衍射和VT-核磁共振研究表明,1在氢化配体的位置上与Ir和Rh类似物具有相似的结构,但由于钴的共价半径较小,三核中心的尺寸比Ir类似物小得多。与铱类似物一样,络合物1与内部炔反应,生成垂直配位的炔络合物的平衡混合物。然而,主要异构体的结构与Ir类似物不同:Ru2Co核上的炔类配体优先配位于Ru-Co键之一。
A heterometallic tetrahydrido cluster composed by ruthenium and cobalt, (Cp*Ru)2(Cp*Co)(μ-H)3(μ3-H) (1) (Cp* = η5-C5Me5), was exclusively synthesized by the reaction of Cp*Ru(μ-H)4RuCp* with (Cp*CoCl)2 in the presence of LiBEt3H. X-ray diffraction and VT-NMR studies showed that 1 has a similar structure to the Ir and Rh analogues in terms of the positions of the hydrido ligands, but the size of the trinuclear site is considerably smaller than that of the iridium analogue because of the smaller covalent radius of cobalt. Like the iridium analogue, complex 1 reacted with internal alkynes to yield an equilibrated mixture of perpendicularly coordinated alkyne complexes. However, the structure of the major isomer was different from that of the iridium analogue: the alkyne ligand on the Ru2Co core was preferentially coordinated to one of the Ru–Co bonds.
DOI: --
发表时间: 2005
期刊: Organometallics 23
影响因子: --
作者:
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通讯作者: 鈴木寛治
三核锇多氢团簇[{(C5Me5)Os}3(μ-H)6]+和{(C5Me5)Os}3(μ-H)5的合成及其与钌类似物的比较
DOI: --
发表时间: 2008
期刊: Organometallics 27
影响因子: --
作者:
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通讯作者: H.Suzuki