Synthesis and structural investigation of mononuclear penta- and hexa-coordinated Co complexes of 8-hydroxyquinoline derived ligands
作者:Tanuja Kumari、Ramhari Meena、Lopamudra Giri、Bipul Sarma、Priyanka R. Angarkhe、Jesni M. Jacob、Jagnyaseni Tripathy、Jyoti Joshi、Mahesh Kumar Ravva、Rakesh K. Behera、Swagat K. Mohapatra
DOI:10.1016/j.molstruc.2022.134253
日期:2023.2
This article describes the synthesis and structural property investigation of two new mononuclear Co(II) complexes of 8-hydroxyquinoline derived flexible tridentate N,O,N'- (LI) and tetradentate N,O,O',N'-ligands (LII). The reactions were carried out between CoCl2.6H2O and the respective ligands in methanol to obtain the complexes CoLICl2 and CoLIICl2 in good yields. The complexes are characterized
本文介绍了 8-羟基喹啉衍生的柔性三齿 N,O,N'- (L I ) 和四齿 N,O,O',N'-配体 ( Ⅱ )。CoCl 2 .6H 2 O 与相应的配体在甲醇中进行反应,以良好的收率得到络合物 CoL I Cl 2和 CoL II Cl 2。配合物通过元素分析、质谱、红外光谱和单晶 X 射线衍射进行表征。CoL I Cl 2的分子结构显示扭曲的三角双锥配位几何,结构指数参数τ = 0.83。顶端位置被喹啉O-和一个末端Cl-原子占据,而赤道位置被两个N-原子和第二个Cl-原子占据。相比之下,CoL II Cl 2具有略微扭曲的八面体结构,螯合配体 L II的所有供体原子保持赤道位置,两端的 Cl 原子位于顶端位置。电子结构计算用于评估这些配合物的几何、电子和磁性。用于模拟分子的非周期性计算表明强 d π -p πCo与配体之间的键合。两种固态结构的晶体堆积通过喹啉环和 C-H ..