Synthesis of novel chiral ‘salen-type’ ferrocenyl ligands

Synthesis, experimental and theoretical characterization of N,N′-dipyridoxyl (1,4-butanediamine) Schiff-base ligand and its Cu(II) complex

“…Therefore, the O2, N2 and N1 atoms are essentially in the same plane with the Cu atom. But the O1 atom has greater deviation The calculated parameters for H 2 BS and its Cu(II) complex are well in agreement with the previously reported values for the similar salen ligands and complexes [23][24][25][26][27][28][29][30][31][32][33][34][35][36], especially the compounds involving the 1,4-butanediamine bridge [23][24][25][26][27][28][29][30].…”

“…As expected [23][24][25][26][27][28][29][30], the carbon atoms of 1,4-butanediamine bridge are not in the same plane (Fig. 1).…”

“…Some experimentally structural data are available for the Schiffbase ligands [23][24][25] and especially Cu Salen complexes with 1,4-butanediamine N(CH 2 ) 4 N bridge [26][27][28][29][30]. Therefore, determination of structural parameters of the H 2 BS ligand and its Cu(II) complex is of great importance.…”

Synthesis and Characterization of Some Chiral Metal-Salen Complexes Bearing a Ferrocenophane Substituent

“…The synthesis of two salen-type ligands having the ferrocenyl moiety on the chiral diimine bridge have been also described and one of them showed an unusual selectivity in the epoxidation of cis -olefin affording trans -epoxide as main isomer, but the asymmetric induction was not satisfactory [ 29 ]. Here we describe the synthesis of a chiral C 2 -symmetrical ligand, bearing a ferrocene system as substituent on the 5,5’-positions of the salicylidene unit, together with the spectroscopic characterization of its complexes with some metals.…”

Synthesis and Conformational Study of a Novel Macrocyclic Chiral(Salen) ligand and its Uranyl and Mn Complexes

“…The broadening of the lines of the 1 H spectrum might envisage the flipping motion of the salicylaldehyde framework already observed for uranyl salophen and salen complexes [ 13 , 17 , 18 , 19 ]. In order to enlighten on possible exchanging process occurring in solution, the proton signals of the uranyl complex were monitored carefully at lower temperature ( Figure 3 ).…”