Construction of new 1D and 2D coordination polymers generated from rigid N,N′-bis(4-pyridylmethylene)-1,5-naphthalenediamine ligand: Syntheses, crystal structures and luminescence properties

Abstract

Treatment of N,N 0 -bis(4-pyridylmethylene)-1,5-naphthalenediamine (L) with Pb(OAc) 2 /KBr, Cu(acac) 2 , and Cu(OAc) 2 afforded three new coordination polymers [Pb(l-L)(l-Br) 2 ] n (1), [Cu(l-L)(acac) 2 ] n (2), and [Cu 2 (l-L)(l-OAc) 4 ] n (3). These coordination polymers have been structurally characterized by single crystal X-ray diffraction. Compound 1 has a 2D sheet structure in which the lead(II) centers are bridged by both L and bromide ligands. Compound 2 adopts a 1D neutral coordination chain and consists of bis (2,4-pentanedionato) copper(II) units connected by rigid bridging L ligands. The structure of compound 3 also adopts a 1D neutral coordination chain in which two copper centers are connected through four acetate groups to form a Cu(OAc) 4 Cu paddle-wheel-type cage between two bridging L ligands. The FT-IR spectra, thermal behavior and photoluminescence properties of these coordination polymers have also been investigated.

Cd(II) coordination polymers based on expanded N,N′-heteroaromatic donor ligands

“…A comparison with related framework structures derived from the spacer ligand L1 suggests intermediate thermal stability for 1. Our coordination polymer is more stable than [Cu(l-L1) (acac) 2 ] n and [Cu 2 (l-L1)(l-OAc) 4 ] n [30] but less stable than [CdL1 1.5 (NO 3 ) 2 ] n [26]. [AgL1 2 ]Á(PF 6 ) and [CoL1 1.5 (NO 3 ) 2 ] decompose at similar temperatures [27,28] as 1.…”

“…More recent contributions by Kepert and co-workers [29] targeted 1-D and 2-D solids in which L1 coordinates to Fe(II). We have recently reported three new compounds based on L1, namely the 2-D layer structure [PbL1(l-Br) 2 ] n and the chain polymers [CuL1(acac) 2 ] n and [Cu 2 L1(OAc) 4 ] n [30]. As for L2, we mention the 2D derivative [CdL2 2 (NO 3 ) 2 ] n and the double-bridged chain polymer [CoL2 2 (NO 3 ) 2 ] n [31].…”

A series of 1-D zinc(II) coordination polymers with 3-D supramolecular networks: synthesis, structural investigation, and NBO analysis

“…All reagents and solvents were commercially available and used without purification. L was prepared according to the literature [15]. Elemental analyses were performed using a Heraeus CHNO-Rapid VarioEL.…”

“…Li et al introduced 1-D and 2-D structures in which L is coordinated to Fe(II) cations [14]. Previous systematic work from our group on the synthesis of coordination polymers containing this dipyridyl ligand is documented [15][16][17].…”

Crystal structure ofcatena-poly[[bis(acetato-κO)copper(II)]-bis[μ-4-(1H-imidazol-1-yl)phenol]-κ2N3:O;κ2O:N3]

“…The literature about one-dimensional inorganic-organic coordination polymers based on copper(II) complexes with Cu II either in a square-pyramidal or a distorted octahedral coordination environment is vast. Just to take very recent examples, three such structures have been reported (Hazra et al, 2017;Puchoň ová et al, 2017;Shaabani et al, 2017). Nevertheless, there is only limited research on 4-(1Himidazol-1-yl)-phenol as a ligand (Maher et al, 1994;Wei et al, 2007;Yurdakul & Badog lu, 2015).…”