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Synthesis and Molecular Structure of the New Green Emitting Complex [Ir 2 (μ 2 ‐oxamidato‐ N , N′ , O , O′ )(2‐(p‐tolyl)pyridinato) 4 ]
Author(s) -
Graf Marion,
Czerwieniec Rafał,
Sünkel Karlheinz
Publication year - 2013
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.201300069
Subject(s) - orthorhombic crystal system , phosphorescence , methanol , dichloromethane , crystallography , chemistry , oxamide , crystal structure , x ray crystallography , molecule , base (topology) , stereochemistry , medicinal chemistry , diffraction , solvent , organic chemistry , physics , optics , fluorescence , mathematical analysis , mathematics
Abstract The reaction of the complex [{Ir(μ‐Cl)(ptpy) 2 } 2 ] ( 1 ) with oxamide in methanol in the presence of sodium methylate as the base was investigated. During the reaction the new complex [Ir 2 (μ 2 ‐oxamidato‐ N , N′ , O , O′ )(ptpy) 4 ] ( 2) , ptpy = 2‐(p‐tolyl)pyridinato was obtained. The molecular structure of compound 2 was determined by an X‐ray diffraction study. 2 crystallized from dichloromethane/methanol as a dihydrate in the orthorhombic space group Pbcm. This new compound displays intense green phosphorescence, with φ PL = 60 %, stemming from the lowest triplet state of the 3 MLCT/LC character.