Synthesis of N-pentafluorophenyl aromatic aldimines C6F5N=CHAr and an X-ray structure analysis of N-pentafluorophenyl-4-methylphenyl aldimine, C6F5N=CHC6H4CH3-4

Fluoro aromatic imine nickel(0) complexes: Synthesis and structural studies

“…As a consequence of the g 2 -binding to the Ni(dippe) fragment, a shortening of the C-F bond in all the structures was also observed, the average C-F bond distances in the structures being of 1.309, 1.282, and 1.324 Å , for 4 * THF, 6, and 9, respectively. The C-F distance in an analogous structure of the uncoordinated ligand is in the order of 1.354 Å [22]. This is in contrast to the behavior reported for a related Ni(0) complex, Ni(dtbpe = 1,2-bis(diterbutylphosphine)-ethane)(g 6 -C 6 F 6 ) [23] where the C-F bond (1.37 Å ) is slightly lengthened (0.03 Å ) as a result of the coordination of the arene (C 6 F 6, 1.34 Å ) to the (dtbpe)Ni(0) fragment.…”

Pyridine-amido aluminum catalyst precursors for 1,3-butadiene transition-metal-free stereospecific polymerization

“…This could be attributed to the low affinity of pentafluoroaniline and its polymerization that occurred at high temperature. 43 All ligands were purified by recrystallization or vacuum distillation, and their structures were confirmed by the NMR spectra.…”

Twinning-Based Organosuperelasticity and Chirality in a Single Crystal of an Achiral Donor–Acceptor Type Schiff Base Induced by Charge-Transfer Interactions

“…Herein we demonstrate superelasticity in a chiral single crystal of an achiral donor–acceptor Schiff base, N -(2,3,4,5,6-pentafluorophenyl)-1-phenylmethanimine ( 1 ) (Figure c), , belonging to the Sohncke space group P 1. The mechanism of superelasticity was investigated by force measurements and X-ray crystallographic studies.…”