КООРДИНАЦИОННАЯ ХИМИЯ, 2017, том 43, № 4, с. 238–243 УДК 541.49 SYNTHESIS, STRUCTURAL CHARACTERIZATION, AND LUMINESCENT PROPERTIES OF TWO NEUTRAL Cu(I) COMPLEXES WITH FUNCTIONALIZED IMIDAZOLE-1,10-PHENANTHROLINE AND PHOSPHINE LIGANDS © 2017 X. F. Liu*, R. F. Li, and X. Feng** College of Chemistry and Chemical Engineering, and Henan Key Laboratory of Function-Oriented Porous Materials, Luoyang Normal University, Luoyang, 471934 P.R. China *е-mail: liuxinfang6@126.com **е-mail: fengx@lynu.edu.cn Received March 5, 2016 Two neutral Cu(I) complexes with a [Cu(NN)(PP)] moiety, Cu(MoPIP)(PPh3)2 (I) and Cu(MPImP)(DPEphos) (II) (MoPIP = deprotonated 2-(4-methoxy phenyl)-1H-imidazole-1,10-phenanthroline, DPEphos = = bis[2-(diphenylphosphino)phenyl]ether), were synthesized when Cu(CH3CN)4 lating diimine and PPh3 ligands. <...> Intermolecular C–H…C interactions are involved in the solid states, which link the complex into a three-dimensional (3D) supramolecular framework. <...> Complex II shows a red-shifted emission in solid state compared with complex I. Density functional theory calculations of the two complexes were also reported. <...> Keywords: imidazole-1,10-phenanthroline, Cu(I) complex, luminescent, DFT calculation DOI: 10.7868/S0132344X17040053 INTRODUCTION In the past decades, increased interests have been devoted to the rational design and synthesis of metal complexesdue to their versatile topologies and potential applications in some fields, such as magnetism, catalysts and luminescent materials [1, 2]. <...> Ligand strategy is popularly used to mediate the photophysical and photochemical properties of metal complexes [3, 4]. <...> On the other hand, 1,10phenanthroline (1,10-Phen) are extensively utilized to construct transition metal complexes, particularly those of attractive luminescent features [5, 6]. <...> The chemical functionalization of 1,10-Phen at various ring positions (2,9-, 3,8-, 4,7-, or 5,6-positions) has attracted considerable interests to improve the structural and chemical properties of metal complexes [7– 9]. <...> Our previous work shows that deprotonation of 2-(4-methyl phenyl)-1H-imidazole-1,10-Phen can make neutral Cu(I) complexes exhibit strong orange or yellow luminescence compared with non-emissive ionic complexes [11]. <...> As a result of our continuing efforts to develop luminescent <...>