双三苯膦铁硫原子簇合物(μ-n-C_4H_9S)(μ-CH_3OCOCH_2CH_2S)Fe_2(CO)_4(PPh_3)_2的合成及晶体结构

Synthesis and Crystal Structure of a Bis-PPh3 Substituted Iron-Sulfur Cluster Complex(μ-n-C_4H_9S)(μ-CH_3OCOCH_2CH_2S)Fe_2(CO)_4(PPh_3)_2

通过(μ-BrMgS)(μ-n-C_4H_9S)Fe_2(CO)_6与CH_2=共轭加成及中间物的醇解反应先制得(μ-n-C_4H_9S)(μ-)Fe_2(CO)_6,然后进一步将它同PPh_3反应制得标题配合物,该簇合物晶体属C2/c空间群,α=30.892(4),b=12.454(2),c=25.725(4);β=91.46(1)°,Z=8;Dc=1.284 g/cm^3;R=0.060,其簇核由2个铁原子和2个硫原子构成蝶式结构,2个三苯膦配体处于铁—铁变键反位,2个桥硫原子上的取代基团均以e键与硫原子相连。

Reaction of triphenylphosphine with(μ -n-C4H9S)(μ-CH3OCCH2CH2S)Fe2(CO)6,whichwas prepared from a conjugated addition reaction of(μ-BrMgS)(μ-n-C4H9S)Fe(CO)6 with ,followed by an alcoholysis process,gave the title complex of (μ-n-C4H9S) .The crystals of the title complex are monoclinic, spacegroupC2/c,with The cluster core of this complex consists of twoiron and two sulfur atoms with a butterfly configuration. Two triphenyl phosphine ligands are trans to Fe-Fe bent bond. The substituents are attached to sulfur atoms by e-bonds.