Structural diversity in polymeric and discrete complexes constructed by divalent transition metals and unsymmetrical quasi semirigid pyridinecarboxylate isomers

Solvent-Induced Controllable Supramolecular Isomerism: Phase Transformation, CO2 Adsorption, and Fluorescence Sensing toward CrO42–, Cr2O72–, MnO4–, and Fe3+

“…We have some interest in this field. 8,16 Nowadays, an enormous number of supramolecular isomers have been documented, which can be categorized into four main types of classifications, namely structural, conformational, catenane (also known as topological), and optical isomersim, 1,2,17 and a few other types of isomers, such as orientation isomers and distortional supramolecular isomers. 3,4,7,9,18 Of special fascination, a limited number of supramolecular isomers have experienced (ir)reverible structural transformation in response to appropriately external stimuli.…”

“…Hence, the generation of supramolecular isomerism originated from the subtle variation of assembly environments may give considerable insight into composition control and structure prediction. We have some interest in this field. , Nowadays, an enormous number of supramolecular isomers have been documented, which can be categorized into four main types of classifications, namely structural, conformational, catenane (also known as topological), and optical isomersim, ,, and a few other types of isomers, such as orientation isomers and distortional supramolecular isomers. ,,,, Of special fascination, a limited number of supramolecular isomers have experienced (ir)­reverible structural transformation in response to appropriately external stimuli. ,− Therefore, supramolecular isomerism featuring stimuli-responsive structural transformation might open new routes to systematically study the properties of the materials with the aim of exerting more control over the solid state structures.…”

Construction and structural transformation of two coordination sphere supramolecular isomers based on Co(ii) and 4-(2-pyridyl)-NH-1,2,3-triazole via one-pot synthesis

“…Single crystal X-ray diffraction and structure analyses revealed that Co-Cl and Co-H 2 O are coordination sphere supramolecular isomers. Although many studies on supramolecular isomerism based on the coexistence of different guest molecules have been reported, [23][24][25][26] supramolecular isomerism with identical chemical compositions within the whole crystals was rare obtained, [27][28][29][30][31][32] and most of them have been isolated from different mother liquors. [33][34][35] Herein, we investigated the structures of both compounds and revealed the influence of hydrothermal reaction conditions on this binary system with the help of mass spectroscopy.…”

“…Single crystal X-ray diffraction and structure analyses revealed that Co – Cl and Co – H 2 O are coordination sphere supramolecular isomers. Although many studies on supramolecular isomerism based on the coexistence of different guest molecules have been reported, 23–26 supramolecular isomerism with identical chemical compositions within the whole crystals was rare obtained, 27–32 and most of them have been isolated from different mother liquors. 33–35…”