Reductive coupling of carbonyl ligands on a cubane-type tetrairon cluster [Cp4Fe4(CO)4] or [(MeC5H4)4Fe4(CO)4] to give an acetylene-coordinated cluster [Cp4Fe4(HCCH)2] or [(MeC5H4)4Fe4(HCCH)2]

被引：32

作者：

Okazaki, M ^{[1
]}

Ohtani, T ^{[1
]}

Inomata, S ^{[1
]}

Tagaki, N ^{[1
]}

Ogino, H ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Sci, Dept Chem, Sendai, Miyagi 9808578, Japan

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 1998年 / 120卷 / 36期

关键词：

D O I：

10.1021/ja980669u

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Treatment of [Cp4Fe4(CO)(4)] with LiAlH4 in tetrahydrofuran (THF) resulted in the reductive coupling of carbonyl ligands to produce a nonsubstituted acetylene-coordinated cluster [Cp4Fe4(HC=CH)(2)]. X-ray structure analysis revealed that the cluster consists of a puckered rhombus of four iron atoms. The coordination mode of the acetylene ligands was determined to be mu(4)-eta(2):eta(2):eta(1):eta(1)-HC=CH. The cyclic voltammogram of the acetylene-coordinated cluster exhibits three reversible or quasireversible one-electron oxidation waves and one irreversible one-electron reduction wave, corresponding to +3/+2, +2/+1, +1/0, and 0/-1 charged couples, respectively. Similarly, [(MeC5H4)(4)Fe-4(CO)(4)] reacts with LiAlH4 in THF to give [(MeC5H4)(4)Fe-4(HC=CH)(2)].

引用

页码：9135 / 9138

页数：4

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