Anionic lanthanide complexes supported by a pyrrole-based tetradentate Schiff base ligand: Synthesis, structures and catalytic activity toward the polymerization of ε-caprolactone

Sublimable Single Ion Magnets Based on Lanthanoid Quinolinate Complexes: The Role of Intermolecular Interactions on Their Thermal Stability

“…The coordination environments of 1-DMF and 2-DMF derivatives were described using the SHAPE code. , The results reveal that both of them show highly distorted geometries, which are closer to three different geometries (bicapped trigonal prism, square antiprism, and triangular dodecahedron) (Figure S10). Such geometries are very common between f -block SIMs, − and in fact, lanthanoid-quinolinate complexes exhibiting SMM behavior with a very similar distorted square-antiprismatic geometry have previously been reported. , …”

A systematic study of the optical properties of mononuclear hybrid organo–inorganic lanthanoid complexes

“…This type of geometry is very common since most Ln III complexes with octacoordinated geometries present square antiprism, or triangular dodecahedron or bicapped trigonal prism types of geometries. [34][35][36][37][38] Reported data show that the metal centres of the fully inorganic ligand systems of 13− present a square antiprism geometry, 31 also observed for the systems presented in this work.…”

Photophysical Studies of a Zr(IV) Complex with Two Pyrrolide-Based Tetradentate Schiff Base Ligands

“… Inspired by these results, we were curious whether other planar ligand architectures with multiple electron-rich pyrrolide heterocycles incorporated into a fully conjugated π-system could be utilized to generate photoluminescent zirconium complexes. A promising candidate was identified in N , N’ -bis­(2-pyrrolylmethylidene)-1,2-phenylenediamine (H 2 bppda), which replaces the central pyridine ring of pyridine dipyrrolide ligands with a phenylenediamine unit. , As an analog to well-studied N , N’ -bis­(salicylidene)­ethylenediamine (salen) and porphyrin ligands, this pyrrole-based Schiff-base ligand has found use in coordination chemistry and catalysis but has not been explored for the generation of photoluminescent metal complexes. − Straightforward synthetic access through a simple condensation of commercially available pyrrole-2-carboxaldehyde and 1,2-phenylenediamine was seen as an additional benefit of the H 2 bppda framework …”

“… 41 , 42 As an analog to well-studied N , N’ -bis(salicylidene)ethylenediamine (salen) and porphyrin ligands, this pyrrole-based Schiff-base ligand has found use in coordination chemistry and catalysis but has not been explored for the generation of photoluminescent metal complexes. 42 − 52 Straightforward synthetic access through a simple condensation of commercially available pyrrole-2-carboxaldehyde and 1,2-phenylenediamine was seen as an additional benefit of the H 2 bppda framework. 53 …”