Synthesis, crystal structures and luminescence properties of new multi-component co-crystals of isostructural Co(II) and Zn(II) complexes

Tella, Adedibu C.; Owalude, Samson O.; Omotoso, Mary F.; Olatunji, Sunday J.; Ogunlaja, Adeniyi S.; Alimi, Lukman O.; Popoola, Olugbenga Kayode; Bourne, Susan A.

doi:10.1016/j.molstruc.2017.12.086

Cited by 14 publications

(10 citation statements)

References 45 publications

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“…The goal of crystal engineering is the deliberate design of crystals with planned structures and predictable physical and chemical properties. − In attempting to achieve this, one must take into account both the geometric properties of the constituent molecules, as well as their proclivity to participate in intermolecular interactions. The intricate interplay of these two effects is perhaps best illustrated by two phenomena: the ability of one substance to crystallize in more the one crystal structurepolymorphism − and the occurrence of different substances adopting very similar (or almost identical) crystal structuresisostructurality. − Of these two phenomena, isostructurality is particularly useful for the study of minute differences in crystal structures and properties, as in isostructural materials the majority of various contributions of the overall crystal packing can be taken to be equivalent, leaving the differences between the constituent molecules as the main cause of any variability between the structures and the properties within an isostructural series. − …”

Section: Introductionmentioning

confidence: 99%

Isostructural Halogen Exchange and Halogen Bonds: The Case of N-(4-Halogenobenzyl)-3-halogenopyridinium Halogenides

Fotović

Bedeković

Stilinović

2022

Crystal Growth & Design

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Six N -(4-halogenobenzyl)-3-halogenopyridinium cations were prepared by reacting meta -halogenopyridines (Cl, Br, and I) with (4-halogenobenzyl) bromides (Br and I) and were isolated as bromide salts, which were further used to obtain iodides and chlorides. Sixteen compounds (out of 18 possible cation/anion combinations) were obtained; two crystallized as hydrates and 14 as solvent free salts, 11 of which belonged to one isostructural series and 3 to another. All crystal structures comprise halogen-bonded chains, with the anion as an acceptor of two halogen bonds, with the pyridine and the benzyl halogen substituents of two neighboring cations. The halogen bonds with the pyridine halogen show a linear correlation between the relative halogen bond length and angle, which primarily depend on the donor halogen. The parameters of the other halogen bonds vary with all three halogens, indicating that the former halogen bond is the dominant interaction. This is also in accord with the calculated electrostatic potential in the σ-holes of the halogens and the thermal properties of the solids. The second isostructural group comprises combinations of the best halogen bond donors and acceptors, and features a more favorable halogen bond geometry of the dominant halogen bond, reaffirming its significance as the main factor in determining the structure.

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Section: Introductionmentioning

confidence: 99%

Isostructural Halogen Exchange and Halogen Bonds: The Case of N-(4-Halogenobenzyl)-3-halogenopyridinium Halogenides

Fotović

Bedeković

Stilinović

2022

Crystal Growth & Design

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“…[5,26] In the search for luminescent metal-organic systems,t ransition d 10 metals like Zn II and Cd II have been the more commonly chosen metal ions. [29][30][31][32] Although these ions may contribute to LMCT (ligand-to-metal charge transfer) on accounto ft he dorbitals being deeplyb uried like core orbitals, these ions may also act as ligand connectors, provoking ligand-to-ligand charge transfer (LLCT) processes inside the net packing. It should be noted that these mechanismsa re not mutually exclusive;more than one emission pathway can coexistinacompetitivem anner with another.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Auxiliary Nitrogenated Linkers on the Design of New Cadmium‐Based Coordination Polymers as Sensors for the Detection of Explosive Materials

Aguirre-Díaz

Echeverri

Paredes‐Gil

et al. 2021

Chemistry A European J

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Three new cadmium‐based coordination polymers, denoted [Cd(hfipbb)(4,4’‐bipy)] (CdPF‐1), [Cd(hfipbb)(2,2’‐bipy)] (CdPF‐2), and [Cd(hfipbb)(1,10‐phen)] (CdPF‐3), have been hydrothermally synthesized by using the well‐known V‐shaped organic linker 4,4’‐(hexafluoroisopropylidene)bis(benzoic acid) (H2hfipbb), together with different nitrogenated auxiliary linkers. Considering the d10 configuration of the transition metal selected, the luminescent properties for these CdPF‐n materials were explored, finding that materials CdPF‐2 and CdPF‐3 act as excellent sensors in the detection of explosive nitro aromatic compounds. The photoluminescence properties of CdPF‐2 and CdPF‐3 revealed that significant and sensitive fluorescence quenching was observed toward NP (nitrophenol) for CdPF‐2 and PA (picric acid) for CdPF‐3 in MeOH suspensions.

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“…13,16 Thereafter, various researches have been focused on the exploitation of their light emission properties to generate functional materials. [18][19][20] The possibility of incorporating permanent porosity into their structures is responsible for the luminescence features of coordination polymers.…”

Section: Introductionmentioning

confidence: 99%

“…Strong luminescent emission peaks observed in a tetranuclear Cu(II)-based coordination polymer were attributed to the presence of conjugated ligand systems in the structure. 20 Conjugation upon coordination with metal ions enhance greatly the luminescence properties of coordination polymers. 19,22 Those with structures constructed from carboxylate ligands have been reported to exhibit conjugation upon coordination with metal ions.…”

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confidence: 99%

Synthesis, Structure, and Properties of a Dinuclear Cu(II) Coordination Polymer Based on Quinoxaline and 3,3-Thiodipropionic Acid Ligands

Tella

Owalude

Adimula

et al. 2021

J Inorg Organomet Polym

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The coordination polymer [Cu 2 (TDPH) 4 (QNX)].DMF, (QNX = Quinoxaline; TDPH = 3,3thiodipropionic acid), has been prepared by reaction of copper acetate, TDPH, and quinoxaline. The compound was characterized by elemental analysis, FTIR spectroscopy, and single-crystal Xray diffraction. The crystal is monoclinic with a P21/n space group and dimensions of a = 12.889(3) Å, b = 14.983(4) Å, c = 14.091(3) Å, α = 90 °, β = 90.200(11) °, γ = 90 °, V = 2721.18 (2) Å 3 , Z = 4. The ligands are hexagonally coordinated to the Cu(II) centre in the form of Cu2O4N with one nitrogen atom from the quinoxaline ligand, and four oxygen atoms from four TDPH molecules in a monodentate fashion. The Cu-Cu bond length was 2.642(1) and 2.629(1) Å for the Cu1-Cu1 and Cu2-Cu2 bonds. The QNX ligand bridged the two copper atoms. The catalytic reduction of 4-nitrophenol to 4-aminophenol using NaBH4 in the presence of [Cu 2 (TDPH) 4 (QNX)].DMF, as catalyst was completed within 11 minutes. The 4-aminophenol product was confirmed using 1 H NMR spectroscopy.

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Synthesis, crystal structures and luminescence properties of new multi-component co-crystals of isostructural Co(II) and Zn(II) complexes

Cited by 14 publications

References 45 publications

Isostructural Halogen Exchange and Halogen Bonds: The Case of N-(4-Halogenobenzyl)-3-halogenopyridinium Halogenides

Isostructural Halogen Exchange and Halogen Bonds: The Case of N-(4-Halogenobenzyl)-3-halogenopyridinium Halogenides

The Effect of Auxiliary Nitrogenated Linkers on the Design of New Cadmium‐Based Coordination Polymers as Sensors for the Detection of Explosive Materials

Synthesis, Structure, and Properties of a Dinuclear Cu(II) Coordination Polymer Based on Quinoxaline and 3,3-Thiodipropionic Acid Ligands

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