Silanol-functionalized tetranuclear copper complex and its nanoscale-heterogenization by immobilization on glass surface from solution
作者:Alexandru-Constantin Stoica、Madalin Damoc、Vasile Tiron、Mihaela Dascalu、Adina Coroaba、Sergiu Shova、Maria Cazacu
DOI:10.1016/j.molliq.2021.117742
日期:2021.12
trans-position. The thermal behavior of the complex was studied by TGA and DSC. Besides the intrinsic properties induced by the presence of the metal ion (magnetic, biological, etc.), the free reactive silanol group may allow post-functionalization of the complex or, as found herein, its chemical binding to a suitable substrate. The attachment of the complex to the glass surface was proven by XPS but
3-甲酰基水杨酸(3-FSA)在弱酸介质中用1,3-双(2-氨基乙基氨基甲基)四甲基二硅氧烷处理形成salen型配体,然后加入氯化铜(II)构建相应的一锅法中的配位化合物。随着 CH=N 键的形成,Si-O-Si 键也被分解形成 Si-OH 键,尾随剩余的单胺。单晶 X 射线衍射表明,当加入铜盐时,形成四核络合物 [Cu 4 (L 1 ) 2 (L 2 ) 2 Cl 2 (H 2 O) 2 ],由两个不对称的双核组成。单位,[Cu 2 L 1L 2 Cl(H 2 O)],其中一个 3-FSA (H 2 L 1 )分子和衍生的偶氮甲碱 (H 2 L 2 )分子之一,双去质子化和三齿,参与氧桥连的配位Cu 4 }芯。配位球由氯原子和水分子完成。在四核结构中,偶氮甲碱基团和隐含的硅烷醇臂位于反式-位置。通过TGA和DSC研究了配合物的热行为。除了由金属离子的存在引起的固有特性(磁性、生物等)之