Synthesis of new bulky bis(pyrazolyl)methane carboxylate (heteroscorpionate) ligands and their complexes with iron, manganese and nickel
作者:Michael W. Jones、Jack E. Baldwin、Andrew R. Cowley、Jonathan R. Dilworth、Alexei Karpov、Nicolas Smiljanic、Amber L. Thompson、Robert M. Adlington
DOI:10.1039/c2dt31859h
日期:——
Three new sterically demanding ligands based on the bispyrazolylacetic acid motif have been prepared and complexes with Fe(II), Fe(III), Ni(II) and Mn(II) have been synthesised and characterised. Single crystal X-ray structures are included for two of the ligands in the protonated form and ten other complexes. Additionally, a new general route to amide derivatives has been established, a range of amide derivatives synthesised and their coordination chemistry investigated. Only one metal complex was synthesised from the amide ligands, and was bound via the hydroxylamine groups in preference to the pyrazole and carboxylate donor set.
我们制备了基于双吡唑乙酸基团的三种新的立体要求较高的配体,并合成和表征了与 Fe(II)、Fe(III)、Ni(II) 和 Mn(II) 的配合物。其中包括两种质子化配体和其他十种配合物的单晶 X 射线结构。此外,还建立了一条通向酰胺衍生物的新途径,合成了一系列酰胺衍生物,并研究了它们的配位化学。只有一种金属配合物是由酰胺配体合成的,而且是通过羟胺基团而不是吡唑和羧酸盐供体组结合的。