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Spectroscopic and Crystal Structure of Europium(III) Picrate Complexes with Novel BINOL Derivatives
Author(s) -
Wang YaWen,
Liu WeiSheng,
Yu KaiBei
Publication year - 2006
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200500445
Subject(s) - picrate , europium , chemistry , denticity , acetamide , crystal structure , fluorescence , crystallography , ion , organic chemistry , physics , quantum mechanics
Two novel ligands N ‐Benzyl‐2‐{2′‐[(benzyl‐phenyl‐carbamoyl)‐methoxy]‐[1,1′]binaphthalenyl‐2‐yloxy}‐ N ‐phenyl‐acetamide (L1) and N ‐Methyl‐2‐{2′‐[(methyl‐phenyl‐carbamoyl)‐methoxy]‐[1,1′]binaphthalenyl‐2‐yloxy}‐ N ‐phenyl‐acetamide (L2), and their europium(III) complexes with picrate, [Eu(pic) 3 (L1)] and [Eu(pic) 3 (L2)], were synthesized and characterized by elemental analysis, IR, UV‐Vis and fluorescence spectroscopy. The crystal structure of [Eu(pic) 3 (L1)]·2CHCl 3 was determined by single crystal X‐ray diffraction. The europium atom is coordinated by nine oxygen atoms of four from the L1 and five from two bidentate and one unidentate picrates. The fluorescent intensity of [Eu(pic) 3 (L2)] is about 2.6 times that of [Eu(pic) 3 (L1)] in solid states. But in CHCl 3 solution, the fluorescent intensity of [Eu(pic) 3 (L1)] is stronger slightly than [Eu(pic) 3 (L2)].