A series of heterobimetallic Ni(II)–Ln(III) (Ln = La, Ce, Pr and Nd) coordination polymers derived from 3-EtOsalamo and dicarboxylates: syntheses, crystal structures and fluorescence properties

Four coordination polymers ∞ 2 [Ni(DMF)(L)Ln(bdc) 1.5 ] (Ln  =  La ( 1 ) and Nd ( 4 )) and ∞ 2 [Ni 2 (DMF) 2 (L) 2 Ln 2 (bdc) 3 ]·CH 3 OH (Ln  =  Ce ( 2 ) and Pr ( 3 )) were derived from a symmetrical salamo-based ligand (H 2 L) with Ni(OAc) 2 ·4H 2 O, Ln(NO 3 ) 3 ·6H 2 O (Ln = La, Ce, Pr and Nd), a...

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Bibliographic Details
Published in:Transition metal chemistry (Weinheim) 2020-10, Vol.45 (7), p.485-492
Main Authors: Zhang, Yu, Li, Ya-Juan, Guo, Shuang-Zhu, Fu, Tao, Zhao, Li
Format: Article
Language:English
Subjects:
Catalysis
Cerium
Chemistry
Chemistry and Materials Science
Coordination polymers
Crystal structure
Crystals
Fluorescence
Infrared analysis
Inorganic Chemistry
Lanthanum
Organometallic Chemistry
Physical Chemistry
Polymers
Praseodymium
Single crystals
Spectrum analysis
Terephthalic acid
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Summary:Four coordination polymers ∞ 2 [Ni(DMF)(L)Ln(bdc) 1.5 ] (Ln  =  La ( 1 ) and Nd ( 4 )) and ∞ 2 [Ni 2 (DMF) 2 (L) 2 Ln 2 (bdc) 3 ]·CH 3 OH (Ln  =  Ce ( 2 ) and Pr ( 3 )) were derived from a symmetrical salamo-based ligand (H 2 L) with Ni(OAc) 2 ·4H 2 O, Ln(NO 3 ) 3 ·6H 2 O (Ln = La, Ce, Pr and Nd), and H 2 bdc (terephthalic acid). Coordination polymers 1 – 4 were synthesized and characterized by elemental analyses, X-ray single crystal diffraction, infrared spectroscopy and ultraviolet–visible absorption spectroscopy. Coordination polymers 1 – 4 have similar structures exhibiting two-dimensional coordination polymers with brick wall in which [Ni(DMF)(L)Ln] units were linked by exodentate (bdc) 2− linker. In each unit, Ni(II) atoms adopted a slightly distorted octahedral geometry, the Ln(III) atoms were nine-coordinated, and the coordination polyhedron was a distorted tricapped trigonal prism. The crystal structure and supramolecular features were discussed in detail. At the same time, the fluorescent properties of coordination polymers 1 – 4 were also investigated.
ISSN:0340-4285
1572-901X
DOI:10.1007/s11243-020-00400-0