Wicht, Merrill M. published the artcileCobalt Werner hosts with nicotinamides: Characterisation of mixed ligand complexes and their selectivity towards ortho xylene, Category: amides-buliding-blocks, the publication is Polyhedron (2021), 115202, database is CAplus.
Cobalt host complexes which form novel Werner structures with nicotinamides were analyzed and characterized, the formation of mixed ligand complexes by crystallization with substitution of two nicotinamide ligands was achieved and selectivity toward a xylene isomer from a mixture was elucidated. Inter- and intra-mol. hydrogen bonding interactions which formed amide dimers, ring structures, discrete bonds and chains were described. In some cases, the packing was stabilized by π···π interactions between the aromatic rings of the nicotinamides. Three mixed ligand crystal structures were formed when two nicotinamide ligands in host complexes were replaced with two DMSO mols. or two methanol mols. via oxygen bridging. This formation required an understanding of the strength of interaction between the ligand and the metal ion. The investigation of pKa, the dipole moment and electronegativity values for the interacting elements clarified the substitution process. A mixed ligand Werner clathrate [Co(NCS)2(isonic)2(C2H6OS)2]·2(ortho-C8H10), showing characteristics both of a mixed ligand structure and a clathrate, presented a preference towards ortho-xylene from a 50:50 mixture of ortho/meta-xylenes. The single crystal structure, its thermal behavior and the Hirshfeld surfaces were used for confirmation of this finding. This study of cobalt Werner complexes with nicotinamides has explored mixed ligand complexes and the property of discrimination towards a xylene isomer from a mixture of two different isomers.
Polyhedron published new progress about 1453-82-3. 1453-82-3 belongs to amides-buliding-blocks, auxiliary class Pyridine,Amine,Amide, name is Isonicotinamide, and the molecular formula is C7H8BClO2, Category: amides-buliding-blocks.
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