Diiron hexacarbonyl complexes bearing naphthalene-1,8-dithiolate bridge moiety as mimics of the sub-unit of [FeFe]-hydrogenase: synthesis, characterisation and electrochemical investigations
作者:Guifen Qian、Wei Zhong、Zhenhong Wei、Hailong Wang、Zhiyin Xiao、Li Long、Xiaoming Liu
DOI:10.1039/c5nj02074c
日期:——
six other complexes by manipulating the formyl groups. Converting the corresponding formyl group into a hydroxymethyl group (CH2OH) led to complexes 4a and 4b. Their reactions with halobutanoyl chloride formed complexes 5a and 5b (halo group = Cl), and 6a and 6b (halo group = Br), respectively. Among the complexes, 3a, 3b, 4b, 5b, and 6a were crystallographically analysed. Electrochemical investigations
报道了带有1,8-二硫萘基桥联键的8个二铁六羰基配合物,它们是[FeFe]-氢化酶的二铁亚基的模拟物。Fe 3(CO)12与石脑油[1,8- cd ] [1,2]二硫醇-正甲醛(n = 2:2a或4:2b)反应生成两种络合物,[Fe 2(μ-S)2 R(CO)6 ](–SRS– =正甲酰基萘-1,8-双(硫醇盐),n = 2:3a,4:3b),它们进一步用作通过处理甲酰基制备其他六种配合物的前体。将相应的甲酰基转化为羟甲基(CH 2 OH),得到络合物4a和4b。他们与卤代丁酰氯的反应分别形成了配合物5a和5b(卤代基团= Cl),以及6a和6b(卤代基团= Br)。在复合物中,3a,3b,4b,5b和6a进行了晶体学分析。对这些配合物的电化学研究表明,由于甲酰基参与桥联键的偶联,因此对电化学产生了深远的电子影响,从而催化了质子的还原。DFT计算表明,甲酰基会通过显着改变LUMO的组成来影响电化学和催化作用。