Danilescu Olga, Bourosh Paulina N, Petuhov Oleg, Kulikova Olga V, Bulhac Ion, Chumakov Yurii M, Croitor Lilia
Institute of Chemistry, Academy Str. 3, MD2028 Chisinau, Moldova.
Institute of Applied Physics, Academy Str. 5, MD2028 Chisinau, Moldova.
Molecules. 2021 Apr 16;26(8):2317. doi: 10.3390/molecules26082317.
Based on solvothermal synthesis, self-assembly of the heptadentate 2,6-diacetylpyridine bis(nicotinoylhydrazone) Schiff base ligand (HL) and Zn(II) and/or Cd(II) salts has led to the formation of three homometallic [CdL] (), {[CdL]∙0.5dmf∙HO} () and {[ZnL]∙0.5dmf∙1.5HO} (), as well as two heterometallic {[ZnCdL]∙dmf∙0.5HO} () and {[MnZnL]∙dmf∙3HO} coordination polymers. Compound represents a 1D chain, whereas - are isostructural and isomorphous two-dimensional structures. The entire series was characterized by IR spectroscopy, thermogravimetric analysis, single-crystal X-ray diffraction and emission measurements. 2D coordination polymers accommodate water and dmf molecules in their cage-shaped interlayer spaces, which are released when the samples are heated. Thus, three solvated crystals were degassed at two temperatures and their photoluminescent and adsorption-desorption properties were recorded in order to validate this assumption. Solvent-free samples reveal an increase in volume pore, adsorption specific surface area and photoluminescence with regard to synthesized crystals.
基于溶剂热合成法，七齿的2,6 - 二乙酰基吡啶双（烟酰腙）席夫碱配体（HL）与锌（II）和/或镉（II）盐的自组装导致形成了三种同金属配合物[CdL]（）、{[CdL]∙0.5dmf∙H₂O}（）和{[ZnL]∙0.5dmf∙1.5H₂O}（），以及两种异金属配合物{[ZnCdL]∙dmf∙0.5H₂O}（）和{[MnZnL]∙dmf∙3H₂O}配位聚合物。化合物 代表一维链状结构，而 - 是同构且同晶型的二维结构。整个系列通过红外光谱、热重分析、单晶X射线衍射和发射测量进行了表征。二维配位聚合物在其笼状层间空间中容纳水分子和dmf分子，当样品加热时这些分子会释放出来。因此，对三种溶剂化晶体在两个温度下进行脱气处理，并记录它们的光致发光和吸附 - 解吸性质，以验证这一假设。与合成晶体相比，无溶剂样品的体积孔隙、吸附比表面积和光致发光均有所增加。
