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Three Cadmium(II) Coordination Polymers based on Mixed 1,2‐Naphthalenedicarboxylate and Bis(pyridyl) Co‐ligands: Structural Diversities and Photoluminescent Properties
Author(s) -
Chen Min,
Zhao Hui,
Wang ZhuoWei,
Liu ChunSen
Publication year - 2015
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.201500037
Subject(s) - sbus , supramolecular chemistry , crystallography , chemistry , thermal stability , octahedron , coordination polymer , photoluminescence , polymer , stereochemistry , metal organic framework , materials science , crystal structure , organic chemistry , optoelectronics , adsorption
Hydrothermal reactions of Cd(OAc) 2 · 2H 2 O with 1,2‐naphthalic anhydride in the absence/presence of different rigid/flexible bis(pyridyl) co‐ligands, produce three distinct coordination polymers, namely [Cd(ndc)] n ( 1 ), {[Cd 5 (ndc) 4 (bpp) 2 (OH) 2 ](H 2 O) 4 } n ( 2 ), and [Cd 5 (ndc) 4 (bpy) 2 (OH) 2 ] n ( 3 ) [ndc = 1,2‐naphthalenedicarboxylate, bpp = 1,3‐bis(4‐pyridyl)propane, and bpy = 4,4′‐bipyridine]. Complex 1 contains dinuclear [Cd 2 O 2 ] clusters as secondary building units (SBUs) and shows a two‐dimensional (2D) kgd network. Complexes 2 and 3 possess one‐dimensional (1D) chains based on pentanuclear [Cd 5 (μ 3 ‐OH) 2 (COO) 2 ] units as SBUs, which are further extended to afford 2D sql sheet via flexible bpp in 2 and three‐dimensional (3D) pcu network via rigid bpy in 3 , respectively. The structural diversities indicate that the bis(pyridyl) co‐ligands with different flexibility play a key role on the formation of the final supramolecular structures. The complexes were characterized by X‐ray crystallographic, IR, elemental, thermal stability, and powder X‐ray diffraction analyses. In addition, the photoluminescent properties in solid state were also investigated.