Molecular Tectonics: Design of 1‐D Coordination Networks Based on Pyrene‐Bearing Pyrazolyl Units

Jouaiti, Abdelaziz; Hosseini, Mir Wais; Kyritsakas, Nathalie

doi:10.1002/ejic.200390008

Cited by 19 publications

(6 citation statements)

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“…In particular, for combinations of neutral organic tectons, cationic metal centres or complexes and anionic species, the understanding of the role played by the anion on the connectivity and dimensionality of the network is of interest. 13,14 Pursuing our effort to better understand factors governing the formation of coordination networks in the solid state, [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34] we have initiated a systematic investigation dealing with the role of anions.…”

Section: Introductionmentioning

confidence: 99%

Molecular tectonics: on the role of counter-ions in the dimensionality of silver coordination networks

et al. 2005

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The role played by different anions (XF 6 2 (X 5 P, As, Sb), BF 4 2 ) on the connectivity of coordination networks formed by a combination of different silver salts and an organic tecton based on piperazine bearing two pyridine units has been studied in the crystalline phase by X-ray diffraction on single crystal. All four weakly coordinating anions lead to the formation of analogous 2-D coordination networks. For the isostructural anions XF 6 2 (X 5 P, As, Sb) the crystals are isomorphous.

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Section: Introductionmentioning

confidence: 99%

Molecular tectonics: on the role of counter-ions in the dimensionality of silver coordination networks

et al. 2005

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“…Supramolecular chemistry [44] focuses on the design and synthesis of "Supramolecular Entities" [45], i.e., compound elements held together by noncovalent connections including hydrogen bonding, bonds with halogens, forces of coordination, or π-π connections (Figure 7) [46]. Research in supramolecular chemistry and crystal engineering is principally centered around host-guest arrangements, binding of anion and cation, coordination polymers, developments of self-assembly networks, biological simulators, gels, fibers, liquid polymers, crystals, and other various types of materials [47].…”

Section: Supramolecular Chemistrymentioning

confidence: 99%

Supramolecular Chemistry and DNA Interaction Studies of Ferrocenyl Ureas and Thioureas

Kausar¹,

Altaf²,

Hamayun³

et al. 2021

Photophysics, Photochemical and Substitution Reactions - Recent Advances

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In this chapter, we have discussed the characteristics and bioapplicabilities of different ferrocene derivatives, for example, amides, amines, sulfonamide, and polymers, focusing mainly on urea and thiourea derivatives due to their autonomous and widespread spectroscopic action and bioactivities. Supramolecular chemistry of ferrocenyl ureas and thioureas is described owing to exploring their mode of interactions within and among the molecules and the role of these supramolecular structures in enhancing the DNA intercalation. DNA interaction studies of these ferrocenyl-based ureas and thioureas are explored with approaches like electrochemical study, viscosity measurements, molecular docking, electronic spectroscopy, dynamic light scattering (DLS), and radical scavenging activity. Attachment of ferrocene moiety to ureas an thiouereas closer to DNA is very promising strategy which most possibly boosts the probability of DNA damage and cell apoptosis which is responsible for enormous biological activities.

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“…While a large number of examples of the linear 1D CP are now available in the literature, − there are only a limited number of step-style 1D CPs. − For the Cu(II)-tpbn system (where tpbn = N , N ′, N ″, N ‴-tetrakis(2-pyridylmethyl)-1,4-diaminobutane) with a variation of the dicarboxylate linkers within the aliphatic chain, such as the spacer atoms CH 2 , O, or S, either a molecular rectangle, e.g., [Cu 4 (tpbn) 2 (glutarate) 2 (H 2 O) 4 ](ClO 4 ) 4 ·2H 2 O ( 1 ) and [Cu 4 (tpbn) 2 (2,2′-thiodiacetate) 2 (H 2 O) 4 ](ClO 4 ) 4 ( 3 ), or a 1D helical CP, {[Cu 2 (tpbn)(diglyconate)(H 2 O) 2 ](ClO 4 ) 2 } n ( 2 ), is isolated (see Figure for the structures of the ligand and linkers). Furthermore, compound 2 , which crystallizes in a chiral space group, maintains its chirality in the solution, as determined by polarimetry.…”

Section: Introductionmentioning

confidence: 99%

Effect of Spacer Atoms in the Dicarboxylate Linkers on the Formation of Coordination Architectures—Molecular Rectangles vs 1D Coordination Polymers: Synthesis, Crystal Structures, Vapor/Gas Adsorption Studies, and Magnetic Properties

Khullar

Mandal

2014

Crystal Growth & Design

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Using the Cu(II)-tpbn system, three new compounds[Cu4(tpbn)2(glutarate)2(H2O)4](ClO4)4·xH2O (when x = 2, 1; x = 4, 1a), {[Cu2(tpbn)(diglyconate)(H2O)2](ClO4)2·solvent} n (when no solvent, 2; solvent = CH3OH/CH3CN, 2a), and [Cu4(tpbn)2(2,2′-thiodiacetate)2(H2O)4](ClO4)4·xH2O (when x = 0, 3; x = 4, 3a), where tpbn = N,N′,N″,N‴-tetrakis(2-pyridylmethyl)-1,4-diaminobutanehave been synthesized from a one-pot self-assembly reaction in a methanol–water mixture under ambient conditions. Their formation is dependent on the spacer atom in the dicarboxylate linker: molecular rectangles (1/1a and 3/3a) are obtained with spacer atoms CH2 and S, whereas a helical one-dimensional (1D) coordination polymer (2/2a) is obtained with O as the spacer atom in the linker. These are the first molecular rectangles containing the dicarboxylates used in this study. In addition to their characterization by elemental analysis and UV–vis and IR spectroscopy, their solid-state molecular structures are determined by single-crystal X-ray diffractometry. Using electrospray mass spectrometry, their structural integrity in the solution state is confirmed. Water vapor adsorption study of 1–3 corroborates well with their solid-state structures in terms of their affinity toward water: 3 shows a stepwise adsorption with a maximum water vapor intake of 16 water molecules per molecule of 3, having a small hysteresis loop, while 1 shows a continuous adsorption with a maximum water vapor intake of 10.5 water molecules per molecule of 1, having a larger hysteresis loop, and 2 has the least affinity. Similarly, adsorption of CO2 is 3 times more by 1 than 3 at 296 K, and both show selectivity for CO2 over N2. Comparison of their magnetic behavior based on variable-temperature magnetic susceptibility measurements (2–300 K) indicates weak antiferromagnetic interactions between the Cu(II) centers in 1 and 3 and a weak ferromagnetic interaction between the Cu(II) centers in 2. This is well correlated to the Cu···Cu distances in these compounds. Each compound showed a characteristic broad isotropic electron paramagnetic resonance signal for distorted square-pyramidal Cu(II) ions at 77 K.

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Molecular Tectonics: Design of 1‐D Coordination Networks Based on Pyrene‐Bearing Pyrazolyl Units

Cited by 19 publications

References 18 publications

Molecular tectonics: on the role of counter-ions in the dimensionality of silver coordination networks

Molecular tectonics: on the role of counter-ions in the dimensionality of silver coordination networks

Supramolecular Chemistry and DNA Interaction Studies of Ferrocenyl Ureas and Thioureas

Effect of Spacer Atoms in the Dicarboxylate Linkers on the Formation of Coordination Architectures—Molecular Rectangles vs 1D Coordination Polymers: Synthesis, Crystal Structures, Vapor/Gas Adsorption Studies, and Magnetic Properties

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