Synthesis and characterization of bis- and tris-carbonyl Mn(I) and Re(I) PNP pincer complexes
作者:Mathias Glatz、Jan Pecak、Lena Haager、Berthold Stoeger、Karl Kirchner
DOI:10.1007/s00706-018-2307-7
日期:2019.1
AbstractA series of neutral bis- and cationic tris-carbonyl complexes of the types cis-[M(κ3P,N,P-PNP)(CO)2Y] and [M(κ3P,N,P-PNP)(CO)3]+ was prepared by reacting [M(CO)5Y] (M = Mn, Re; Y = Cl or Br) with PNP pincer ligands derived from the 2,6-diaminopyridine, 2,6-dihydroxypyridine, and 2,6-lutidine scaffolds. With the most bulky ligand PNPNH-tBu, the cationic square-pyramidal 16e bis-carbonyl complex
摘要一系列中性双羰基和阳离子三羰基配合物,其类型为cis -[M(κ 3 P,N,P -PNP)(CO) 2 Y] 和 [M(κ 3 P,N,P -PNP) (CO) 3 ] +通过 [M(CO) 5 Y](M = Mn、Re;Y = Cl 或 Br)与衍生自 2,6-二氨基吡啶、2,6-二羟基吡啶的 PNP 钳配体反应来制备,和2,6-二甲基吡啶支架。利用体积最大的配体PNP NH - t Bu,得到了阳离子方锥体16e双羰基配合物[Mn(PNP NH - t Bu)(CO) 2 ] + 。相反,在铼的情况下,形成18e络合物[Re(PNP NH - t Bu)(CO) 3 ] + 。通过 DFT 计算研究了 CO 的解离,结果表明 [M(κ 3 P,N,P -PNP)(CO) 3 ] +中的 CO 释放通常是吸能的,而 [Mn( κ 3 P,N,P -PNP NH - t Bu)(CO)