Tessarolo, Jacopo; Lee, Haeri; Sakuda, Eri; Umakoshi, Keisuke; Clever, Guido H. published the artcile< Integrative Assembly of Heteroleptic Tetrahedra Controlled by Backbone Steric Bulk>, Recommanded Product: 3-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine, the main research area is palladium fluorenonedipyridyl cage complex preparation luminescence; crystal structure palladium fluorenonedipyridyl cage complex.
A bent fluorenone-based dipyridyl ligand LA reacts with PdII cations to a solvent-dependent dynamic library of [PdnL2n] assemblies, constituted by a [Pd3LA6] ring and a [Pd4LA8] tetrahedron as major components, and a [Pd6LA12] octahedron as minor component. Introduction of backbone steric hindrance in ligand LB allows exclusive formation of the [Pd6LB12] octahedron. Combining equimolar amounts of both ligands results in integrative self-sorting to give an unprecedented [Pd4LA4LB4] heteroleptic tetrahedron. Key to the non-statistical assembly outcome is exploiting the structural peculiarity of the [Pd4L8] tetrahedral topol., where the four lean ligands occupy two doubly bridged edges and the bulky ligands span the four remaining, singly bridged edges. Hence, the system finds a compromise between the entropic drive to form an assembly smaller than the octahedron and the enthalpic prohibition of pairing two bulky ligands on the same edge of the triangular ring. The emission of luminescent LA is maintained in both homoleptic [Pd3LA6] and heteroleptic [Pd4LA4LB4].
Journal of the American Chemical Society published new progress about Crystal structure. 329214-79-1 belongs to class pyridine-derivatives, and the molecular formula is C11H16BNO2, Recommanded Product: 3-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine.