Single and double crown macrocyclic derivatives of cyclotriphosphazene as receptors of silver(<scp>i</scp>) ions

Gutowska, Natalia; Seliger, Piotr; Andrijewski, Grzegorz; Siwy, Mariola; Małecka, Magdalena; Kusz, Joachim

doi:10.1039/c5ra02469b

Cited by 8 publications

(12 citation statements)

References 32 publications

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“…The performed ESI‐MS measurements confirm such mode of binding of the cited metal ions. Furthermore, this hypothesis was also confirmed by 1 H‐NMR and 31 P‐NMR measurements for silver(I) complexes …”

Section: Resultssupporting

confidence: 57%

“…Cadmium(II) and lead(II) ions during the ionization process are able to bind water molecule to their complex form. It is probably connected with the size of the metal ion (they are nearly equal or larger then silver ion, and hence, they are perching over the macrocyclic ring, as it was observed in the case of silver complexes, giving the opportunity to attaching other ligands—water molecules to the metal ion). Furthermore, the preferred coordination number of the investigated metal ions (4 or 6) gives additional assumption for such behavior.…”

Section: Resultsmentioning

confidence: 97%

“…The potentiometric measurements were done by the competitive method. The determination of the stability constants for silver(I) ions was described previously . Due to the high values of stability constant as well as good characteristic of Ag/Ag + electrode in methanol solvent, the silver(I) was taken as the competing ion in the applied method.…”

Section: Resultsmentioning

confidence: 99%

“…The synthesis of PNP lariat ether and its complexes with Ag(I) ion has been reported recently . The investigated ligand L is depicted in Figure .…”

Section: Methodsmentioning

confidence: 99%

“…The synthesis of PNP lariat ether and its complexes with Ag(I) ion has been reported recently. 20 The investigated ligand L is depicted in Figure 1. The other complexes used for the MS measurements were prepared by simple mixing of appropriate amounts of methanol solutions of the ligand and the metal nitrate solutions.…”

Section: Synthesismentioning

confidence: 99%

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Tandem mass spectroscopy as a tool for investigation of complexes of PNP‐lariat ether derivative with metal ions

et al. 2018

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The novel PNP-lariat ether L with cyclotriphosphazene ring incorporated in the macrocyclic structure was synthesized and checked by the electrospray mass spectrometry (ESI-MS) method for the ability to bind different types of ions Ag , Ca , Cd , Cu , and Pb . Furthermore, the stability constants of the abovementioned ion complexes with the investigated ligand have been determined by direct and competitive potentiometric methods. To evaluate the stability of various complex types and to confirm the way of metal cation binding, the tandem mass spectra of the investigated ligand and its complexes were taken. As a result, we obtained quite a good relationship between the number and main types of complex species observed in ESI-MS experiments and the forms of complexes for which the stabilization constants were determined by potentiometric methods. Moreover, we also concluded that in case of big discrepancies of stability constants, ESI-MS experiments could provide information about the most stable form of the complexes, but they fail when the differences between the strength of the coordination binding are slightly different.

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Section: Resultssupporting

confidence: 57%

Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

“…The synthesis of PNP lariat ether and its complexes with Ag(I) ion has been reported recently . The investigated ligand L is depicted in Figure .…”

Section: Methodsmentioning

confidence: 99%

Section: Synthesismentioning

confidence: 99%

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Tandem mass spectroscopy as a tool for investigation of complexes of PNP‐lariat ether derivative with metal ions

et al. 2018

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Syntheses of tetrachloro and tetraamino(2-furanylmethyl)spiro(N/N) cyclotriphosphazenes: Chemical, structural elucidation, antiproliferative and antimigratory activity studies

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et al. 2023

Journal of Molecular Structure

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Cyclotriphosphazenes as Scaffolds for the Synthesis of Metallomesogens

et al. 2020

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(Amino)cyclotriphosphazenes have been used as new scaffolds for the synthesis of silver(I) metallomesogens. Two cyclotriphosphazenes, [N3P3(NHCy)6] (phos-1) and nongem-trans-[N3P3(NHCy)3(NMe2)3] (phos-2), were reacted with the silver complex having a pro-mesogenic ligand, [Ag(OTf)L] (L = CNC6H4{OC(O)C6H2(3,4,5-(OC10H21)3)}-4; OTf = OSO2CF3), in different molar ratios, 1:1, 1:2, or 1:3, to give two series of cationic metallophosphazenes, [N3P3(NHCy)6{AgL} n ](TfO) n (phos-1.n ) and nongem-trans-[N3P3(NHCy)3(NMe2)3{AgL} n ](TfO) n (phos-2.n ) with n = 1, 2, or 3. The chemical structure of these compounds, deduced from spectroscopic techniques, was in accordance with coordination of the silver fragments “AgL” to nitrogen atoms of the phosphazene ring, whereby their number n depends on the molar ratio used. Despite the presence of the bulky substituents on the core N atoms, cyclotriphosphazenes coordinated to three “AgL” units exhibited mesomorphism at room temperature. The mesophase was characterized as columnar hexagonal according to the optical microscopy and X-ray diffraction studies. A model based on an intermolecular association in pairs of the metallocyclotriphosphazenes having three AgL units has been proposed in order to explain the mesomorphic columnar arrangement in these materials. Starting silver complex, [Ag(OTf)L], also exhibited a columnar hexagonal mesophase at room temperature.

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Single and double crown macrocyclic derivatives of cyclotriphosphazene as receptors of silver(i) ions

Abstract: Two new single and double P-pivot lariat ethers have been synthesized and the stability constants of their complexes with silver(i) ions were determined in acetonitrile and methanol solutions.

Cited by 8 publications

References 32 publications

Tandem mass spectroscopy as a tool for investigation of complexes of PNP‐lariat ether derivative with metal ions

Tandem mass spectroscopy as a tool for investigation of complexes of PNP‐lariat ether derivative with metal ions

Syntheses of tetrachloro and tetraamino(2-furanylmethyl)spiro(N/N) cyclotriphosphazenes: Chemical, structural elucidation, antiproliferative and antimigratory activity studies

Cyclotriphosphazenes as Scaffolds for the Synthesis of Metallomesogens

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