Syntheses, Structures and Properties of Three Coordination Polymers with 3D Network, 2D Lattice, 1D Ladder Structures. Issue 1 (7th January 2020)

• Record Type: Journal Article
• Authors: Guan, Lei; Chen, Yaxu; Wang, Ying; Wang, Xing
• Is Part Of: ChemistrySelect. Volume 5:Issue 1(2020)
• Page Start: 407
• Page End: 414
• Publication Date: 2020-01-07
• Subjects: Coordination polymer -- Property -- SHG -- Structure -- Synthesis; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201902849
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: Three coordination polymers (CPs), [Ni1.5 ( L )(bipy)2 (H2 O)3 ]n (1 ), [Zn( L )(Hbipy) (H2 O)]n ⋅2n(H2 O) (2 ) and [Cu(bipy)2 (H2 O)2 ]n ⋅2n(H2 L )⋅ 3nH2 O (3 ) (NaH2 L =5‐sulfoisophthalic monosodium salt, bipy=4, 4′‐bipyridine) have been synthesized by solvothermal methods. They were characterized by X‐ray single crystal diffraction, elemental and thermogravimetric analyses. Introduction of the auxiliary N‐donor ligand (bipy) can lead to three Ni(II), Zn(II) and Cu(II) CPs with three‐dimensional (3D) 4‐connected network of the point symbol of (7 5 ⋅9), one‐dimensional (1D) ladder and two‐dimensional (2D) lattice frameworks, respectively. Compound 1 is racemic, whose topological structure can be divided into left‐handed and right‐handed helices. The fluorescence emission peaks of compounds 1–3 are located at 416 nm, 412 nm and 455 nm, respectively, which may be attributed to the ligand to metal charge transfers. Variable‐temperature magnetic susceptibility measurements can reveal that there are ferromagnetic and antiferromagnetic exchange interactions between the neighboring spins in compounds 1 and 3, respectively, and compound 2 is a diamagnetism system. Compound 1 shows the second‐harmonic generation (SHG) response that is 4 times those of potassium dihydrogen phosphate (KDP). Abstract : Introduction of bipy can lead to three Ni(II), Zn(II) and Cu(II) coordination polymers with 3D 4‐connected network of the point symbol of (7 5 ⋅9), 1D ladder and 2D lattice frameworks, respectively. Compound 1 is racemic, whose topological structure can be divided into left‐handed and right‐handed helices. Compound 1 shows SHG response that is 4 times those of KDP. Magnetic and fluorescence properties of compounds 1–3 have also been studied.