Pyridine N-oxide complexes of Cu(II) ions with pseudohalides: Synthesis, structural and spectroscopic characterization

Structure, DFT Calculations, and Magnetic Characterization of Coordination Polymers of Bridged Dicyanamido-Metal(II) Complexes

“…In the present study, the preparation and structural characterization of the 1D chain coordination polymers of 4-methoxypyridine-N-oxide In continuation of our effort to explore the coordination geometry and magnetic properties of pseudohalide metal(II) complexes containing pyridine and pyridine-N-oxide derivatives as coligands, the following study was undertaken. With pyridine-N-oxide compounds, only two bonding modes (mono-dentate and bridging µ-O,O-NPR) [7,8,10,[54][55][56][57][58][59] were found (Scheme 2). In the present study, the preparation and structural characterization of the 1D chain coordination polymers of 4-methoxypyridine-N-oxide (4-MOP-NO) with dicyanamide, catena- (2), Cd (3)) and the monomeric [Cu(dca) 2 (4-MOP-NO) 2 ] (4), are reported.…”

Novel Lanthanide(III) Ternary Complexes with Naphthoyltrifluoroacetone: A Synthetic and Spectroscopic Study

“…[4,[6][7][8][9] Nonetheless, much attention has not been paid to their N-oxide derivatives such as bpyO1 and bpyO2. [10][11][12] The compounds may serve as excellent ligands towards Ln 3+ due to the presence of hard O donor atom as well as efficient sensitizers for the lanthanide emission. [1,13,14] In the presented work, we describe the syntheses, crystal structures and emission properties of a series of lanthanide (Y 3+ , Er 3+ , Eu 3+ ) ternary complexes containing naphthoyltrifluoroacetone (NTA) (Scheme 1) and various ancillary ligands (Scheme 2).…”

“…Therefore, ancillary ligands of 2, 2′‐bipyridine and o ‐phenanthroline type have been extensively used 4,6–9. Nonetheless, much attention has not been paid to their N‐oxide derivatives such as bpyO1 and bpyO2 10–12. The compounds may serve as excellent ligands towards Ln 3+ due to the presence of hard O donor atom as well as efficient sensitizers for the lanthanide emission 1,13,14…”

Σύνθεση Και Χαρακτηρισμός Συμπλόκων Στοιχείων Μεταπτώσεως Με Παράγωγα Του Βενζοθειαζολίου

“…Οι τιμές των Κ// και Κ┴ που ελήφθησαν για το σύμπλοκο Cu-1 (Κ// < Κ┴) καταδεικνύουν ότι οι π-δεσμοί είναι εντός επιπέδου. Τέλος, όπως αναφέρθηκε και προηγουμένως, η τιμή του α 2 σχετίζεται με την ομοιπολικότητα των σδεσμών, επομένως μπορούμε να συμπεράνουμε ότι οι σ-δεσμοί εντός του επιπέδου στα σύμπλοκα έχουν περισσότερο ομοιοπολικό χαρακτήρα διότι το α 2 <1 [191,192].…”