Synthesis and emissive properties of bi-directed azomethine iron(III) complexes based on salicylidene-4-biphenylcarboxylic acid

Magnetic properties of the mononuclear iron (III) complexes with biphenyl‐disubstituted Schiff base ligand: EPR and SQUID study

“…The detailed synthetic procedure and characterization (FT‐IR, NMR spectroscopy, chromatography, elemental analyses, and MALDI‐ToF‐MS method) of the mononuclear iron (III) complexes [Fe(L) 2 ] + X − with tridentate SB ligands [where L is 4‐(4‐diphenylcarboxy)‐2′‐oxysalicylidene‐N′‐ethylene‐N‐ethylene‐2′‐amine‐(carboxy‐4‐diphenyl)] and Cl − ( 1 ), PF 6 − ( 2 ) and NO 3 − ( 3 ) counter‐ions (Figure 1) are described by M.S. Gruzdev et al [ 16 ] Based on the powder XRD analysis, it was established that the crystal cells of all complexes are monoclinic and unit cells contain four molecules each. Their parameters and features of molecular packing (determined by the space group of symmetry) depend on the counter‐ion nature.…”

“…Their parameters and features of molecular packing (determined by the space group of symmetry) depend on the counter‐ion nature. [ 16 ] Compounds demonstrate the presence of weak fluorescence and fluorescence quantum yields (φ) values in the range from 2% to 17%. It was shown that the replacement of the counter‐ion affects the position of the absorption bands and the transition from Cl − to NO 3 − and PF 6 − affects the φ value of fluorescence.…”

Azomethine Fe3+ coordination compounds containing carbazole units: Synthetic approach, spectral characterization, and magnetic studies

“…The ease of removal in this case is due to the stability of the tertiary carbenium ion. The synthesis of 2‐(2‐ tert ‐butylcarboimide ethylamino)ethanol ( Boc‐AEEA ) was carried out by reacting of 2‐(2‐aminoethylamino)ethanol with di‐ tert ‐butyldicarbonate (Boc 2 O) in dry THF for 12 h followed by extraction with ethyl acetate 33 . Boc 2 O was chosen owing to its high reactivity and reasonable stability 34 …”

“…The synthesis of 2-(2-tert-butylcarboimide ethylamino)ethanol (Boc-AEEA) was carried out by reacting of 2-(2-aminoethylamino)ethanol with di-tert-butyldicarbonate (Boc 2 O) in dry THF for 12 h followed by extraction with ethyl acetate. 33 Boc 2 O was chosen owing to its high reactivity and reasonable stability. 34 An ester of 4-(3,6-di-tert-butyl-carbazol-9-yl)benzoyloxydiethyleneamine)tert-butylcarbimide (CrB (Boc) amine) was synthesized by the reaction of equimolar amounts of Boc-AEEA with 4-(3,6-di-tert-butyl-9H-carbazole-9-yl)benzoic acid in dry CH 2 Cl 2 with an excess of DCC and a catalytic amount of DPTS.…”