Cu(II) complexes of cyclotriphosphazene bearing Schiff bases: Synthesis, structural characterization, DFT calculations, absorbance and thermal properties

Doğan, Semih; Balcı, Ceylan Mutlu; Şenocak, Ahmet; Beşli, Serap

doi:10.1016/j.poly.2020.114541

Cited by 12 publications

(8 citation statements)

References 61 publications

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“…Additionally, 12 and 13 were synthesized, according to Doğan et al [ 100 ]. Scheme 16 presents the 12 and 13 synthesis pathways.…”

Section: Functional Organic Groups In the Phosphazene Ring: Propertie...mentioning

confidence: 99%

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Progress in the Field of Cyclophosphazenes: Preparation, Properties, and Applications

Dagdag,

Kim

2023

Polymers

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This review article provides a comprehensive overview of recent advancements in the realm of cyclophosphazenes, encompassing their preparation methodologies, distinctive properties, and diverse applications. The synthesis approaches are explored, highlighting advancements in the preparation of these cyclic compounds. The discussion extends to the distinctive properties exhibited by cyclophosphazenes, including thermal stability characteristics, and other relevant features. Furthermore, we examine the broad spectrum of applications for cyclophosphazenes in various fields, such as coatings, adhesives, composites, extractants, metal complexes, organometallic chemistry, medicine, and inorganic chemistry. This review aims to offer insights into the evolving landscape of cyclophosphazenes and their ever-expanding roles in contemporary scientific and technological arenas. Future possibilities are emphasized, and significant research data shortages are identified.

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“…Additionally, 12 and 13 were synthesized, according to Doğan et al [ 100 ]. Scheme 16 presents the 12 and 13 synthesis pathways.…”

Section: Functional Organic Groups In the Phosphazene Ring: Propertie...mentioning

confidence: 99%

Section: Figures and Schemesmentioning

confidence: 99%

Progress in the Field of Cyclophosphazenes: Preparation, Properties, and Applications

Dagdag,

Kim

2023

Polymers

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“…More recently, Dogan and co‐workers have prepared the new CTP based Schiff base ligands, 84 and 85 with objective to synthesize Cu(II) complexes 86 and 87 by reacting both with CuCl 2 (Scheme 20). [89] In both complexes, each Cu 2+ coordinates with geminally substituted nitrogen atoms of imine groups and geometry around the Cu centre exists as distorted tetragonal geometry. The molecular geometry and the binding type of the Cu(II) complexes 86 and 87 were confirmed by DFT calculations with the B3LYP/6‐31G (d, p) basis set.…”

Section: Metal Clusters Of Cyclotriphosphazene (Ctp)mentioning

confidence: 99%

Multisite Coordination Ligands on Cyclotriphosphazene Core for the Assembly of Metal Clusters and Porous Coordination Polymers

et al. 2021

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In this review, we account the recent advancements on cyclotriphosphazene (N3P3Cl6) based multi‐site coordination ligands for the synthesis of multi‐metallic architectures. In case of N3P3Cl6, Phosphorous centres with two chlorides use to be bonded with nitrogen [−P(Cl2)=N−]3 at alternative positions in six membered ring to provide a robust planar structure to anchor the ligand arms with wide flexibility. Cyclic P−N robust motif is renowned as the potential support for the design of multi‐site ligands originating from phosphorus centres by viable substitution of variable number of ligand units (1 to 6) consist of one or more coordination site(s) via geminal and/or non‐geminal modes. Despite these phosphorus centres are promising to support in ligand structure, occasionally involve in coordination with transition metals as well. Three of alternative nitrogen atoms in this heterocyclic core are supposed to function as Lewis base centres while the electron releasing substituents occurred to tether on phosphorus centres, also when the resultant ring size favours adequate interaction towards the transition metal ions with respect to skeletal flexibility. The ligand modes vary with respect to numbers and orientation of coordination sites, which is imperative to enrich the ligation ability. Moreover, several examples of cyclotriphosphazene core ligands consist of the spacer oxygen atom while tethering with exocyclic ligand units to incorporate more flexibility. In accordance with coordination sites on ligand framework and choice of metal, the skeletal ring nitrogen atom(s) of the cyclotriphosphazene can be involved in coordination with metal ions. Indeed, the coordination of ligands is reported to coordinate with main group, transition and lanthanide metal ions to form variety of metal clusters and porous coordination polymers. Subsequently, the geometry of homo or heterometallic complexes with respect to versatile coordination modes of metallic complexes tends to afford inherent chemical properties for specific application. In terms of exocyclic ligands, the heterocyclic units such as pyridyloxy‐, pyrazolyl‐, pyridylalkylamino‐, bipyridyl‐, 1,10‐phenanthroline, porphyrinato, hydrazide, hydrazone, Schiff's base and spirocyclic amine units attached to cyclotriphosphazene were exploited to form series of metal complexes. Similarly, the variety of metal clusters, polymeric network (1D to 3D) and porous coordination polymers have been reported on basis of cyclic core molecule substituted with ligand units, pyridyloxy‐, multi‐carboxylic, aromatic amines substituted pyridyloxy‐ and imidazole moiety involved to form variety of products.

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“…Aryloxycyclophosphazenes containing azomethine groups are of particular research interest. They are widely used in biomedicine [39], as flame retardant materials [40], for coordination chemistry and catalysis [41], and as fluorescent dyes [42]. This is due to their polyfunctionality, biocompatibility, high thermal stability, flame resistance, and UV radiation resistance.…”

Section: Introductionmentioning

confidence: 99%

Crystallization of Nano-Sized Macromolecules by the Example of Hexakis-[4-{(N-Allylimino)methyl}phenoxy]cyclotriphosphazene

2022

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The synthesized compound was characterized by 31P, 13C, and 1H NMR spectroscopy and MALDI-TOF mass spectroscopy. According to DSC data, the compound was initially crystalline, but the crystal structure was defective. The crystals suitable for X-ray diffraction study were prepared by slow precipitation of the compound from a solution by a vapor of another solvent. A study of the single crystal obtained in this way demonstrated that the phosphazene ring has a flattened chair conformation. It was found that the sphere circumscribed around the compound molecule has a diameter of 2.382 nm.

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Cu(II) complexes of cyclotriphosphazene bearing Schiff bases: Synthesis, structural characterization, DFT calculations, absorbance and thermal properties

Cited by 12 publications

References 61 publications

Progress in the Field of Cyclophosphazenes: Preparation, Properties, and Applications

Progress in the Field of Cyclophosphazenes: Preparation, Properties, and Applications

Multisite Coordination Ligands on Cyclotriphosphazene Core for the Assembly of Metal Clusters and Porous Coordination Polymers

Crystallization of Nano-Sized Macromolecules by the Example of Hexakis-[4-{(N-Allylimino)methyl}phenoxy]cyclotriphosphazene

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