Syntheses and characterizations of square planar nickel(II) complexes with pendant ligands: Examples of bi-dentate bonding modes of potentially tri- and tetra-dentate Schiff bases
作者:Subhendu Bag、Prasanta Kumar Bhaumik、Subrata Jana、Mithun Das、Prasanta Bhowmik、Shouvik Chattopadhyay
DOI:10.1016/j.poly.2013.08.028
日期:2013.11
tridentate ONO-donor ligand HL1 and potential tetradentate ONOO-donor ligand HL2 coordinate the nickel(II) only through the amine N and phenolic O to form complexes 1 and 2 respectively, i.e. the ligands act as pendant ligands. On the other hand, the potential tetradentate ONOO-donor Schiff base H2L3 coordinates the nickel(II) only through the amine N atom and two phenolic O atoms to form complex 3, i.e. it
四个方形平面镍(II)配合物[Ni(L 1)2 ](1),[Ni(L 2)2 ](2),[Ni(L 3)(NHEt 2)](3)和[Ni (han)2 ](4),其中HL 1 = 1-(3-羟丙基亚氨基甲基)萘-2-醇,HL 2 = 1-(5-羟基-3-氧杂戊基亚氨基甲基)萘-2-醇,H 2 L 3 = 2-(2-羟基-3-甲氧基苄基亚氨基)苯酚和Hhan = 1-羟基-2-乙酰萘酮,已通过元素分析,IR和UV-Vis光谱以及单晶X射线衍射研究进行了表征。潜在的三齿ONO-供体配体HL 1和潜在的四齿ONO-供体配体HL 2仅通过胺N和酚O配位镍(II),分别形成配合物1和2,即,配体充当侧基配体。另一方面,潜在的四齿ONOO供体席夫碱H 2 L 3仅通过胺N原子和两个酚O原子配位镍(II)形成配合物3,即它也可以作为侧基配体。配合物4是通过镍(II)与1-羟基-2-乙酰萘酮的反应而形