X-ray structure and temperature dependent luminescent properties of two bimetallic europium complexes

Monometallic europium, terbium, and neodymium complexes formed from the bridging ligand 2,3-bis(2-pyridyl)pyrazine: Crystal structure and temperature dependent luminescent properties

“…Over the past decade these bridging ligands have been utilized to form homodinuclear and heterodinuclear lanthanide complexes [1][2][3][4][5][6][7][8][9][10][11][12]. Of the numerous polyazine bridging ligands available two have received particular attention in forming lanthanide bridged complexes; 2,2 0 -bipyrimidine (bpm, I) and to a lesser extent 2,3-bis(2-pyridyl)pyrazine (dpp, II).…”

Structural analysis and electronic properties of a homodinuclear erbium(III) complex bridged by the polyazine ligand 2,2′-bipyrimidine

“…To prevent CH vibrational quenching of the excited 4f electrons the most efficient b-diketonates contain CF 3 groups. The ''antenna" effect can be achieved with ligands like 4,4,4-trifluoro-1-(2-furyl)-1,3-butanedione (tfa) which forms facile complexes with lanthanide(III) ions [3].…”

“…To prevent CH vibrational quenching of the excited 4f electrons the most efficient b-diketonates contain CF 3 groups. The ''antenna" effect can be achieved with ligands like 4,4,4-trifluoro-1-(2-furyl)-1,3-butanedione (tfa) which forms facile complexes with lanthanide(III) ions [3].The literature has many examples of mononuclear erbium(III) complexes, their synthesis, structural analysis and their luminescent properties [4][5][6]. To our knowledge however homodinuclear erbium(III) complexes are rare and examples of the structural analysis of homodinuclear erbium(III) complexes bridged by polyazine ligands have not been reported.…”

Structure and photophysical properties of new trinuclear lanthanide complexes (Ln=Eu and Tb) with 1,10-phenanthroline

“…Various binuclear, tetranuclear and octanuclear lanthanide complexes have been previously reported in the literature together with studies of their structural, photophysical and/or magnetic properties [8][9][10][11]. Surprisingly, there are rather few examples of trinuclear lanthanide complexes documented [12][13][14]. In those cases, three lanthanide ions are bridged by a specially-designed multidentate organic ligands.…”