Florent Maxime, Kyritsakas Nathalie, Planeix Jean-Marc, Guenet Aurélie, Hosseini Mir Wais
Laboratoire de Tectonique Moléculaire, UMR Université de Strasbourg-CNRS 7140, icFRC, Université de Strasbourg, F-67000 Strasbourg, France.
Dalton Trans. 2021 Nov 9;50(43):15924-15934. doi: 10.1039/d0dt00822b.
Seven isostructural heterometallic luminescent (Ir,Cd) coordination polymers were prepared upon the combination of tris-chelate cationic Ir(III) complexes behaving as metalloligands with Cd(II) salts. Three octahedral Ir(III) complexes have been considered in the present report. They consist of a bipyridine unit functionalised with 3-pyridyl moieties as peripheral coordinating sites and two 2-phenylpyridyl cyclometalating derivatives. Three cadmium halide salts CdX (X = Cl, Br, I) were used and rearranged themselves during the self-assembly process with the metallatectons to afford a dianonic trinuclear Cd node [CdX]. Seven out of the nine possible metallotecton-metal salt combinations could be characterised in the crystalline phase by X-ray diffraction on single crystals proving the isostructurality of the seven extended architectures studied. All of the CPs are luminescent with small shifts observed in the emission wavelength compared to the discrete complexes. Depending on the degree of fluorination of the two cyclometalating units, tuning of the emission wavelength of the discrete complexes as well as of the resulting coordination polymers is achieved.
通过将作为金属配体的三螯合阳离子铱（III）配合物与镉（II）盐相结合，制备了七种同构的异金属发光（铱，镉）配位聚合物。本报告中考虑了三种八面体铱（III）配合物。它们由一个用3-吡啶基部分作为外围配位位点官能化的联吡啶单元和两个2-苯基吡啶环金属化衍生物组成。使用了三种卤化镉盐CdX（X = Cl、Br、I），它们在自组装过程中与金属配体重新排列，得到一个二阴离子三核镉节点[CdX]。九种可能的金属配体-金属盐组合中的七种可以通过对单晶进行X射线衍射在晶相中进行表征，证明了所研究的七种扩展结构的同构性。所有的配位聚合物都有发光现象，与离散配合物相比，发射波长有小的位移。根据两个环金属化单元的氟化程度，可以实现对离散配合物以及所得配位聚合物发射波长的调节。
