[(η5-C5H5)Fe(CO)2BBr2] | 911216-80-3

• 英文名称: [(η5-C5H5)Fe(CO)2BBr2]
• CAS: 911216-80-3
• 化学式: C₇H₅BBr₂FeO₂
• 分子量: 347.581
• InChiKey: QFCJMARMBCDDQB-UHFFFAOYSA-N

反应信息

• 作为产物：
  描述：

  sodium dicarbonyl(cyclopentadienyl)ferrate 、 三溴化硼 以 甲苯 为溶剂， 以48%的产率得到[(η5-C5H5)Fe(CO)2BBr2]
  参考文献：
  名称：

  Synthesis and Reactivity of Dihaloboryl Complexes

  摘要：

  Transition metal dihaloboryl complexes of the types [(eta(5)-C5R5)Fe(CO)(2)BX2] (R = H, Me; X = F, Cl, Br), [(eta(5)-C5H4Me)Ru(CO)(2)BX2] (X = Cl), and [(OC)(5)MnBX2] (X = Cl, Br) were prepared via salt elimination reactions. Comparison of the CO stretching frequencies indicates a higher degree of Fe- B d(pi)-p(pi) back-bonding in the dibromoboryl complexes [(eta(5)-C5R5)Fe(CO)(2)BBr2] with respect to their -BCl2 and -BF2 analogues. This finding is constistent with the p(pi)-p(pi) back-bonding abilities of the halides (F > Cl > Br). Reactions of [(eta(5)-C5Me5)Fe(CO)(2)BX2] (X = Cl, Br) with 4-methylpyridine were performed, leading to the formation of the corresponding Lewis-base adducts and, with base in excess, to the first metal-substituted boronium cation [(eta(5)-C5Me5)Fe(CO)(2)BBr(NC5H4-4-Me)(2)](+).

  DOI：

  10.1021/om060377z