The synthesis and structural characterization of [η-C5H5Mo(CO)2]2[μ-catena-(CH3As)5]. An example of a ring → chain conversion upon coordination
作者:Arnold L. Rheingold、Melvyn Rowen Churchill
DOI:10.1016/0022-328x(83)89527-8
日期:1983.2
Pentamethylcyclopentaarsine, cyclo-(CH3As)5, upon combination with [CpMo(CO)3]2 (Cp = η-C5H5) undergoes a simple ring-opening reaction to form [CpMo(CO)2]2[μ-catena(CH3As5]. This complex crystallizes in the noncentrosymmetric orthorhombic space group Pna21 [No. 33, C92υ] with a 10.901(3), b 15.279(3), c 15.985(4) Å, V 2662.51(2) Å3, and Z = 4. The structure was refined to RF = 4.6% and RwF = 4.5% for
Pentamethylcyclopentaarsine,环- (CH 3 As)的5,在与组合[合物CpMo(CO)3 ] 2(CP =η-C 5 H ^ 5)经历一个简单的开环反应以形成[合物CpMo(CO)2 ] 2 [ μ-系列(CH 3如图5 ]。在非中心对称正交空间群中的复杂的结晶PNA 2 1 [第33号,ç 9 2υ ]与一个10.901(3),b 15.279(3),ç 15.985(4) ,V2662.51(2)埃3,与Ž = 4的结构进行了改进,以ř ˚F = 4.6%,- [R wF的= 4.5%,3961个反射| ˚F 0 |>3σ(| ˚F 0 |)。该复合物具有由Mo(1),Mo(2)和As(3)定义的近镜平面。五个砷原子形成一个开放链(As(1)…As(5)2.835(2)Å),末端原子桥接两个钼原子。根据基于18电子Mo原子环境的预期,Mo(1)…Mo(2)的键距为4