Transition metal carboxylate coordination polymers with amide-bridged polypyridine co-ligands: assemblies and properties

Zhang, Ju‐Wen; Kan, Xiao‐Min; Li, Xiaoli; Luan, Jian; Wang, Xiuli

doi:10.1039/c4ce02531h

Cited by 58 publications

(17 citation statements)

References 90 publications

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“…This fact is due to reproducible outcomes, that reflect the strong metal-ligand coordination bonds, and can be achieved with the judicious choice of organic ligands and metal-ions [14][15][16][17][18][19][20][21]. In this context, for example, O-and N-atoms are typical donors for the coordination bond formation; the former are derived from functional groups such as -COOH, -SO 3 H and phosphonates [22][23][24], and the latter primarily from N-heterocycles [25]. The combined use of these two groups render ligands a strong coordinating ability, and are well-known for the preparation of homometallic and heterometallic coordination compounds [25].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen and Halogen Bond Mediated Coordination Polymers of Chloro-Substituted Pyrazin-2-Amine Copper(I) Bromide Complexes

et al. 2020

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A new class of six mono- (1; 3-Cl-, 2; 5-Cl-, 3; 6-Cl-) and di-(4; 3,6-Cl, 5; 5,6-Cl-, 6; 3,5-Cl-) chloro-substituted pyrazin-2-amine ligands (1–6) form complexes with copper (I) bromide, to give 1D and 2D coordination polymers through a combination of halogen and hydrogen bonding that were characterized by X-ray diffraction analysis. These Cu(I) complexes were prepared indirectly from the ligands and CuBr2 via an in situ redox process in moderate to high yields. Four of the pyrazine ligands, 1, 4–6 were found to favor a monodentate mode of coordination to one CuI ion. The absence of a C6-chloro substituent in ligands 1, 2 and 6 supported N1–Cu coordination over the alternative N4–Cu coordination mode evidenced for ligands 4 and 5. These monodentate systems afforded predominantly hydrogen bond (HB) networks containing a catenated (μ3-bromo)-CuI ‘staircase’ motif, with a network of ‘cooperative’ halogen bonds (XB), leading to infinite polymeric structures. Alternatively, ligands 2 and 3 preferred a μ2-N,N’ bridging mode leading to three different polymeric structures. These adopt the (μ3-bromo)-CuI ‘staircase’ motif observed in the monodentate ligands, a unique single (μ2-bromo)-CuI chain, or a discrete Cu2Br2 rhomboid (μ2-bromo)-CuI dimer. Two main HB patterns afforded by self-complimentary dimerization of the amino pyrazines described by the graph set notation R22(8) and non-cyclic intermolecular N–H∙∙∙N’ or N–H∙∙∙Br–Cu leading to infinite polymeric structures are discussed. The cooperative halogen bonding between C–Cl∙∙∙Cl–C and the C–Cl∙∙∙Br–Cu XB contacts are less than the sum of the van der Waals radii of participating atoms, with the latter ranging from 3.4178(14) to 3.582(15) Å. In all cases, the mode of coordination and pyrazine ring substituents affect the pattern of HBs and XBs in these supramolecular structures.

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Section: Introductionmentioning

confidence: 99%

Hydrogen and Halogen Bond Mediated Coordination Polymers of Chloro-Substituted Pyrazin-2-Amine Copper(I) Bromide Complexes

et al. 2020

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“…Usually, CPs are constructed from organic ligands and inorganic metal building species under suitable conditions [ 6 , 7 ]. For example, 1D CPs are considered to have the least structural framework, in particular, metal coordination-based noncovalent interactions between 1D infinite chains can lead to interesting higher-dimensional architectures [ 8 , 9 ]. These include linear, helical, rotaxane, ladder and ribbon/tape structures, which have been successfully demonstrated in recently years [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Structural Diversity of Six Coordination Polymers Based on the Designed X-Shaped Ligand 1,1,1,1-Tetrakis[(3-pyridiniourea)methyl]methane

Zhang

Xie

et al. 2018

Molecules

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In this study, six coordination polymers (CPs), {[Ag2(L)(CF3SO3)]·CF3SO3·2H2O·DMF}n (1), {[Ag(L)]·SbF6·4DMF·H2O}n (2), {[Zn(L)0.5(I)2]·3.75H2O}n (3), {[Cd2(L)(I)4(H2O)(DMF)]·4H2O·3DMF}n (4), {[Hg2(L)(I)4]·H2O·4DMF}n (5) and {[Hg2(L)(Cl)4]·2H2O·3DMF}n (6), were obtained based on the designed X-shaped urea-based ligand. X-ray single crystal diffraction analysis revealed that complex 1 displayed a 3D (3,4)-connected {6·82}{64·82}-tcj net. Complex 2 featured a 2D 4-connected {43·63} sheet. Complexes 3 and 5 exhibited a 1D polymeric loop chain. Complex 4 displayed a 1D polymeric fishbone chain. Complex 6 showed a 2D 4-connected {44·62}-sql sheet. Structural comparison revealed that not only the metal ions, but also the anions played crucial roles in the control of final structures.

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“…[11][12][13] Even small structural changes of the organic bridging ligands such as the symmetry, length, flexibility or functional groups can lead to obvious differences in the ultimate framework structures and topological networks. [14][15][16] Recently, the flexible bis(pyridyl)-bis(amide) ligands have proven to be wonderful N-heterocyclic bridging ligands for producing novel MOCCs. Based on the flexible bis(pyridyl)-bis(amide) ligands with different -(CH 2 ) n -spacers (n = 0, 1, 2, • • • 10) and different aromatic polycarboxylates as the mixed ligands, some MOCCs with diversified topological structures and interesting properties have been obtained.…”

Section: Introductionmentioning

confidence: 99%

Effect of three aromatic polycarboxylates on the structural diversities and properties of three new cadmium(II) coordination compounds

et al. 2018

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Three new cadmium(II) coordination compounds [Cd 2 (L) 2 (btec)(H 2 O) 2 ]•3H 2 O (1), [Cd(HL)(btb)] (2) and [Cd(L)(pda)] • 2H 2 O (3) were prepared by hydrothermal reactions of cadmium(II) chloride with ligands L (L = N,N-bis(3-pyridyl)octandiamide) in the presence of different aromatic polycarboxylates (H 4 btec = 1,2,4,5-benzenetetracarboxylic acid, H 3 btb = 1,3,5-tri(4-carboxylphenyl)benzene, H 2 pda = 1,4-phenylenediacetic acid). The structures of compounds 1-3 have been determined by X-ray single crystal diffraction analyses and further characterized by infrared spectroscopy (IR), powder X-ray diffraction (PXRD) and thermogravimetric (TG) analyses. Compound 1 displays a 3D metal-organic framework with (4,4,4)connected {6 2 .8 4 }{6 3 .8 3 }{6 4 .8 2 } topology constructed from 2D [Cd 2 (btec)] n layers and μ 2-bridging L ligands. Compound 2 is a 3D (3,3)-connected {10 3 } topological network based on the 3D [Cd(btb)] n− n framework and the protonated monodentate HL ligand. Compound 3 shows a 2D layer with (3,5)-connected (4 2 • 6 7 • 8)(4 2 • 6) topological structure, which are further linked by hydrogen bonding interactions to form a 3D supramolecular network. The influences of three aromatic polycarboxylates on the structures of title compounds are investigated. Further, the fluorescent properties of three cadmium(II) compounds and their fluorescent sensing properties towards small solvent molecules and metal cations have been studied.

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Transition metal carboxylate coordination polymers with amide-bridged polypyridine co-ligands: assemblies and properties

Cited by 58 publications

References 90 publications

Hydrogen and Halogen Bond Mediated Coordination Polymers of Chloro-Substituted Pyrazin-2-Amine Copper(I) Bromide Complexes

Hydrogen and Halogen Bond Mediated Coordination Polymers of Chloro-Substituted Pyrazin-2-Amine Copper(I) Bromide Complexes

Structural Diversity of Six Coordination Polymers Based on the Designed X-Shaped Ligand 1,1,1,1-Tetrakis[(3-pyridiniourea)methyl]methane

Effect of three aromatic polycarboxylates on the structural diversities and properties of three new cadmium(II) coordination compounds

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