Syntheses and crystal structures of novel silver(I) coordination polymers based on linear or tetrahedral coordination environments

Uemura, Kazuhiro

doi:10.1016/j.inoche.2008.03.026

Cited by 25 publications

(5 citation statements)

References 33 publications

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“…Solvent system alongside other factors − plays an important role in tuning the final structure in CPs because it accepts different roles during the self-assembly process such as template, ligand, guest, and both ligand and guest. − Solvent not only is able to change the final structure but also could affect the crystal’s habit and properties by changing the dimension and topology, , morphology, , formation of supramolecular isomers, , conformation of the ligand, − coordination environment of the metal center, and pore size of the structure. , Among solvents, water plays a significant role due to it being the most abundant and nontoxic/green solvent. As a result, it has drawn attention through scientific history.…”

Section: Introductionmentioning

confidence: 99%

Water Content-Controlled Formation and Transformation of Concomitant Pseudopolymorph Coordination Polymers

2023

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Two concomitant pseudopolymorph coordination polymers {[Cd2L2(OAc)4]·2DMSO} n (1) and {[CdL(OAc)2]·2.75H2O} n (2) were synthesized by self-assembly of 1,4-bis(4-pyridyl)-2,3-diaza-1,3-butadiene (L) and cadmium acetate in DMSO. Single-crystal X-ray diffraction confirmed that 1D ladder structural motifs exist for pseudopolymorphs 1 and 2 which contain DMSO and water guest molecules, respectively. Our study illustrated the active role of solvent water content in obtaining compound 2. We find that the presence of water as an impurity in the DMSO solvent creates the possibility of formation of concomitant pseudopolymorph coordination polymers which is a unique event. Furthermore, our analyses showed the effect of environmental humidity on the transformation of unstable compound 1. 1D ladder pseudopolymorphic compound 1 could be transformed to guest-free 1D linear compound [CdL(OAc)2(H2O)] n (3′) (the powder form of single crystals of 3) through a scarce case of water absorption from air. Also, the crystalline material of coordination polymer 3 was transformed to coordination polymer 2 through the dissolution–recrystallization structural transformation process in DMF or DMSO. Our study clarified that the amount of water in the reaction container can control the formation of one of the compounds 2 or 3. In the presence of a significant amount of water, compound 3 (coordinated water) will be produced, whereas if a small amount of water is present, compound 2 (uncoordinated water) is prepared as an exclusive product.

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Section: Introductionmentioning

confidence: 99%

Water Content-Controlled Formation and Transformation of Concomitant Pseudopolymorph Coordination Polymers

2023

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“…The solvent is another key factor that can change the crystal structure. Solvents can accept several roles in the structure of CPs, for example, ligand, guest, both ligand and guest, or template. − Acceptance of these roles by solvents not only affects the final structure but also affects the morphology, coordination environment of the metal center, dimension and topology, − conformation of the ligand, , pore size of the structure, , and formation of supramolecular isomers. , …”

Section: Introductionmentioning

confidence: 99%

Humidity-Induced Structural Transformation in Pseudopolymorph Coordination Polymers

et al. 2021

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Three cadmium coordination polymers, namely, { [CdL-(OAc) and [CdL-(OAc) 2 (H 2 O)] n (3), were synthesized by an exoditopic 1,4-bis(4pyridyl)-2,3-diaza-1,3-butadiene Schiff base ligand (L) and cadmium acetate in the presence of different solvent systems. Single-crystal X-ray diffraction, powder X-ray diffraction, and thermogravimetric analysis showed that 1D ladder pseudopolymorphic compounds (1 and 2) transformed to the solvent-free 1D linear compound 3 through a rare case of water absorption from air at room temperature. Interestingly, compound 3 was transformed to compound 1 through a dissolution− recrystallization structural transformation process. The results illustrated that solvents and humidity have an important role in the formation of pseudopolymorphs with the same or different structural motifs.

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“…Design and optimization of functional coordination polymers (CPs) is based on structure–property relationships that permit to foresee the contribution of building blocks, functional groups, guest molecules, and their interaction to the overall properties. − However, the following realization of desired structural topologies incorporating selected components is not just governed by choice of geometry, size, conformation, and number and nature of the binding sites of the building blocks, , but it also critically depends on reaction conditions that control their self-assembly. − Therefore, progress in the development of targeted materials requires the rationalization and generalization of the effect of fundamental parameters that may be used to a priori design and drive the synthesis.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Coordination Polymers and Discrete Complexes from the Reaction of Copper(II) Carboxylates with Pyrazole: Role of Carboxylates Basicity

Scatena

Massignani

Lanza

et al. 2021

Crystal Growth & Design

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The reaction of select copper(II) monocarboxylates Cu(RCOO)2(H2O) x (R = C4H3O, C6H5, H; x = 2, 4) with pyrazole (Hpz), carried out in protic solvents, yields mono- or dinuclear species [Cu(RCOO)2(Hpz) n ] m (n = 2, 4; m = 1, 2), always accompanied by tri- or hexanuclear derivatives based on the triangular [Cu3(μ3-OH)(μ-pz)3]2+ fragment. The molecular structures of all isolated compounds have been established through XRD determinations. In some cases, the mono-, or dinuclear species act as secondary building units, self-assembling into 1D or 3D coordination polymers. The hexanuclear benzoate cluster contains coordinated and crystallization MeOH molecules, whose removal generates a crystalline 1D coordination polymer that can be reconverted into the hexanuclear cluster by soaking in MeOH. The relatively high pK b values of carboxylate anions employed in the syntheses are responsible for the preferential formation of mono- or dinuclear species rather than tri- or hexanuclear ones.

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Syntheses and crystal structures of novel silver(I) coordination polymers based on linear or tetrahedral coordination environments

Cited by 25 publications

References 33 publications

Water Content-Controlled Formation and Transformation of Concomitant Pseudopolymorph Coordination Polymers

Water Content-Controlled Formation and Transformation of Concomitant Pseudopolymorph Coordination Polymers

Humidity-Induced Structural Transformation in Pseudopolymorph Coordination Polymers

Synthesis of Coordination Polymers and Discrete Complexes from the Reaction of Copper(II) Carboxylates with Pyrazole: Role of Carboxylates Basicity

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