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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 33, Number 4
BKCSDE 33(4)
April 20, 2012 

Syntheses, Structures and Luminescent Properties of Two Novel M(II)-Phen-SIP Supramolecular Compounds (M = Co, Ni)
Yu-Lan Zhu,* Shuai Shao, Kui-Rong Ma, Xue-Ling Tang, Li Cao, Hui-Chao Zhao
Hydrothermal synthesis, Crystal structure, Supramolecule, Luminescent properties
Two metal compounds, [Co(phen)2(H2O)2]·2H2SIP·2H2O 1 and [Ni(phen)3]·2H2SIP·3H2O 2, have been obtained by incorporating 1,10-phenanthroline (phen) and 5-sulfoisophthalic acid monosodium salt (NaH2SIP) ligands under hydrothermal conditions. Meanwhile, the two compounds were characterized by element analysis, IR, XRD, TG-DTA and single-crystal X-ray diffraction. Both 1 and 2 present 3D supramolecular structures via O–H···O hydrogen bond interactions. Luminescent properties for 1 and 2 were also studied. The compound 1 has two fluorescence emission peaks centered at 398 nm attributed to the intraligand emission from the SIP ligand and at 438 nm assigned to the combined interaction of intraligand π*-π transitions of the phen ligand and ligand-to-metal-charge-transfer (LMCT) transitions (λex = 233 nm). The compound 2 shows one emission band centered at 423 nm with a shoulder peak at 434 nm which may be originated from the intraligand π*-π transitions of the phen ligand (λex = 266 nm).
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