Synthesis and crystal and molecular structure of [Fe<sub>2</sub>Rh<sub>2</sub>(µ-PPh<sub>2</sub>)<sub>4</sub>(µ-CO)<sub>2</sub>(CO)<sub>6</sub>], an unusual straight-chain tetranuclear compound
作者:Raymond J. Haines、Nick D. C. T. Steen、Robin B. English
DOI:10.1039/dt9830001607
日期:——
Reaction of [Rh(η3-C3H5)2Cl}2] with [Fe(CO)4(PPh2H)] in alcohol in the presence of carbon monoxide affords an unusual straight-chain compound, [Fe2Rh2(µ-PPh2)4(µ-CO)2(CO)6], the structure of which has been determined by X-ray methods. The complex crystallizes in space group P21/c with a= 12.468(5), b= 13.354(5), c= 17.293(7)Å, β= 95.43(1)°, and Z= 2. The metal-atom skeleton is a centrosymmetric Fe–Rh–Rh–Fe
的反应[的Rh(η 3 -C 3 H ^ 5)2氯} 2 ]与[铁(CO)4(PPH 2 H)]在一氧化碳的存在下醇,得到一个不寻常的直链化合物,[铁2的Rh 2(μ-PPH 2)4(μ-CO)2(CO)6 ],已经由确定的结构X射线方法。该复合物在空间群P 2 1 / c中结晶,其中a = 12.468(5),b = 13.354(5),c= 17.293(7)Å,β= 95.43(1)°,Z =2。金属原子骨架是一个中心对称的Fe–Rh–Rh–Fe链,金属原子通过封闭的Fe–P–Rh和Rh–P–Rh桥键。该化合物的31 P- 1 H} nmr光谱数据已根据溶液中两种异构形式的存在进行了解释。