Transition metal complexes bearing a 2,2-bis(3,5-dimethylpyrazol-1-yl)propionate ligand: one methyl more matters
作者:Gazi Türkoglu、Frank W. Heinemann、Nicolai Burzlaff
DOI:10.1039/c1dt00022e
日期:——
The new N,N,O ligand 2,2-bis(3,5-dimethylpyrazol-1-yl)propionic acid (2,2-Hbdmpzp) (2) and its transition metal complexes [Mn(2,2-bdmpzp)(CO)3] (3), [Re(2,2-bdmpzp)(CO)3] (4), [Cu(2,2-bdmpzp)2] (5), and [Ru(2,2-bdmpzp)Cl(L)(PPh3)] [L = PPh3 (6), N2 (7), CO (8a/b), SO2 (9a/b)] have been synthesized, characterized and compared to analogous complexes bearing a bis(3,5-dimethylpyrazol-1-yl)acetic acid. It was found that the additional methyl group has a remarkable influence on the stability and reactivity of transition metal complexes.
新的N,N,O配体2,2-双(3,5-维基二甲基吡唑-1-基)丙酸(2,2-Hbdmpzp) (2)及其过渡金属配合物[Mn(2,2-bdmpzp)(CO)3] (3)、[Re(2,2-bdmpzp)(CO)3] (4)、[Cu(2,2-bdmpzp)2] (5)和[Ru(2,2-bdmpzp)Cl(L)(PPh3)] [L = PPh3 (6)、N2 (7)、CO (8a/b)、SO2 (9a/b)]已被合成和表征,并与类似的含有双(3,5-维基二甲基吡唑-1-基)乙酸的配合物进行了比较。结果发现,额外的甲基基团对过渡金属配合物的稳定性和反应性有显著影响。