Synthesis and Coordination Chemistry of Doubly-Tridentate Tripodal Pyridazine and Pyrimidine-Derived Ligands: Structural Interplay Between M2L and M2L2 (M = Ni and Pd) Complexes and Magnetic Properties of Iron(II) Complexes
作者:Christopher J. Sumby、Ben A. Leita、Boujemaa Moubaraki、Keith S. Murray、Peter J. Steel
DOI:10.1071/ch09244
日期:——
The coordination chemistry of three bridging doubly-tridentate ligands, including the known compound 3,6-bis(di-2-pyridylmethyl)pyridazine (1), which is structurally similar to 1,4-bis(di-2-pyridylmethyl)phthalazine (2), and two pyrimidine-linked compounds 4,6-bis(di-2-pyridylmethyl)pyrimidine (3), and 4,6-bis(di-2-pyridylamino)pyrimidine (4), was investigated with FeII, NiII, and PdII metal salts
三个桥接双三齿配体的配位化学,包括已知的化合物3,6-双(di-2-吡啶基甲基)哒嗪(1),其结构类似于1,4-双(di-2-吡啶基甲基)邻苯二嗪(2)和Fe II研究了两个嘧啶连接的化合物4,6-双(二-2-吡啶基甲基)嘧啶(3)和4,6-双(二-2-吡啶基氨基)嘧啶(4),Ni II和Pd II金属盐。从容易获得的起始原料通过一锅反应合成配体3和4。化合物3由二-2-吡啶基甲烷和4,6-二碘嘧啶合成四氢呋喃,产率为48%,而配体4是由二-2-吡啶胺与4,6-二氯嘧啶反应制备的,产率为27%。在合成4的过程中,仅以一个三齿结合位点获得另一种化合物4-氯-6-(二-2-吡啶基氨基)嘧啶(5),收率为30%。的反应1,3和4用的Fe II或Ni II盐,得到两种类型的复合物,无论是离散m 2 L或M 2大号2个组件。获得的Pd II复合物也被表征为离散M2 L复合物。通过NMR和IR光谱,微