摘要
标题化合物(Me_2SiSiMe_2)[η~5-(C_5Mc_4)Fe(CO)]_2(μ-(CO)_2(1)与碘在苯中反应,生成碘插入Fe—Fe键的碘正离子桥连二铁化合物(Me_2SiSiMe_2)[η~5-(C_5Me_4)Fe(CO_2)]_2I_n^+.I_n^-(n=3,3;n=5,4).如反应在氯仿中进行,则只能分离到Fe—Fe键断裂的双铁碘化物(Me_2SiSiMe_2)[η~5-(C_5Me_4)Fe(CO)_2I]_2.将4溶于Me_2SO/Me_2CO中,则其分子内的I_5^-与Fe—I^+—Fe两部分相互作用,也生成碘桥断裂的产物.以元素分析、IR、~1H NMR谱表征了2～4的分子结构,并经X射线衍射测定了2的晶体及分子结构.
The reaction of the title compound(Me2SiSiMe2)[η5 - (C5Me4) Fe(CO)2]2(μ - CO)2(1) with iodine in benzene yielded the iodo-bridged complex (Me2SiSiMe2) [η5 - (C5Me4)Fe-(CO2 )]2I+ In- ( n = 3 , 3 ; n =5,4). If the reaction was proceeded in chloroform , onlythe Fe-Fe bond cleaved iron iodide (Me2SiSiMe2) [η5-(C5Me4)Fe(CO2)2I]2(2) was isolated. When 4 was dissolved in Me2SO - Me2CO, the two parts of I5- and Fe-I+ -Fe reacted each other to form the iodo - bridge cleaved product 2. The structures of 2- 4 were characterized by elemental analyses, IR and n NMR spectra. The crystal structure of 2 was determined by X- ray crystallography . The crystal is monoclinic , space group P 21 / n , with a =0.7656(2) , b=1.6068(4), c = 1.3030(6)nm; β=95.11(3)°, V= 1.597(2)nm3,Z= 2, Dc = 1. 735g cm-3,μ = 29.24cm-1, F (000) = 820. The final deviation factor R is 0.037.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
1996年第12期1209-1213,共5页
Acta Chimica Sinica
基金
国家自然科学基金
国家教委博士学科点基金资助的项目
