Supramolecular structures of Ni(II) and Pt(II) based on the substituted 2, 2′: 6′, 2″-terpyridine: Synthesis, structural characterization, luminescence and thermal properties

Momeni, Badri Z.; Rahimi, Farzaneh; Jebraeil, S. Mohammad; Janczak, Jan

doi:10.1016/j.molstruc.2017.08.081

Cited by 13 publications

(10 citation statements)

References 37 publications

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“…There are two possible basic coordination modes of mono‐terpyridine and bis ‐terpyridine complexes as shown in Figure 1. [ 18–21 ] The most common binding mode of terpyridine ligand is chelation via the N 3 motif and the meridional binding. However, there is an uncommon mode of monodentate complexation, which has recently been observed in terpyridine complex of Au.…”

Section: Introductionmentioning

confidence: 99%

Crystal exploring, Hirshfeld surface analysis, and properties of 4′‐(furan‐2‐yl)‐2,2′:6′,2″‐terpyridine complexes of nickel (II): New precursors for the synthesis of nanoparticles

Momeni

Anari

Torrei

et al. 2021

Applied Organom Chemis

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A series of mono‐ and bis‐terpyridine complexes of nickel (II) based on the 4′‐(furan‐2‐yl)‐2,2′:6′,2″‐terpyridine (ftpy) have been synthesized and structurally characterized using elemental analysis, infrared spectroscopy, and single crystal X‐ray diffraction. The reaction of NiCl2•6H2O with ftpy has been resulted in the formation of new bis‐terpyridine complex [Ni (ftpy)2](PF6)•2H2O (1). The new complex [Ni (ftpy)2](PF6)2 (2), obtained during the crystallization of 1 in methanol, was characterized using X‐ray crystallography, which shows that six nitrogen atoms from terpyridine ligands occupy the coordination sites around the Ni (II) in a distorted octahedral geometry. On the other hand, the reaction of NiCl2•6H2O with ftpy in a 1:2 or 1:1 mole ratio in methanol in the presence of KSCN affords two new thiocyanato complexes [Ni (ftpy)2](SCN)2•2H2O (3) and [Ni (ftpy)(NCS)2(H2O)]•2H2O (4), respectively. The crystal structure of 3 reveals that nickel (II) is hexa‐coordinated in a distorted octahedral geometry NiN6 involving six atoms of two ftpy ligand; the ftpy ligands are perpendicular to each other. The new complex [Ni (ftpy)(NCS)2(DMSO)]•DMSO (5) is obtained during the crystallization of 4 in DMSO. The crystal structure of 5 reveals that the nickel (II) is hexa‐coordinated by three nitrogen atoms of ftpy, two NCS−, a DMSO in a slightly distorted octahedral geometry. The X–H (XH, C, N, O) bond interactions control the arrangement of the supramolecular 3D framework. Hirshfeld surface analyses and two‐dimensional fingerprint plot reveal that the main interactions are H–H contacts for 2, 3, and 5, which comprise 34.1%, 37.2%, and 34.6%, respectively. Thermal decomposition of the coordination complexes led to the formation of Ni, NiO, and Ni2P2O7 nanoparticles (NPs). The resulting NPs were fully characterized by powder XRD, field emission scanning electron microscopy (FESEM), transmission electron microscope (TEM), and energy‐dispersive X‐ray spectroscopy (EDX). The formation of these NPs indicates the role of the precursor complexes and counterion. Our results indicate that the NPs with the smaller size could be obtained at calcination temperature of 600 °C. Thermal and luminescent properties of complexes have been discussed in detail.

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Section: Introductionmentioning

confidence: 99%

Crystal exploring, Hirshfeld surface analysis, and properties of 4′‐(furan‐2‐yl)‐2,2′:6′,2″‐terpyridine complexes of nickel (II): New precursors for the synthesis of nanoparticles

Momeni

Anari

Torrei

et al. 2021

Applied Organom Chemis

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“…Following the ligand synthesis, the platinum precursor cis-[PtCl 2 (COD)] 42 was reacted directly with the respective terpyridine ligand to yield the platinum complexes of the form [Pt(R-tpy)Cl] + (PtL1, PtL3, PtL4), while PtL1 has previously been synthesized using cis-[PtCl 2 (DMSO) 2 ] as the platinum precursor (Scheme 2). 43 Upon formation of complexes PtL3 and PtL4, the signals in the aromatic region of the 1 H NMR spectra (7.0−9.2 ppm) shifted relative to the resonances observed for their respective ligands (Figures S1 and S2). Furthermore, a more definitive indication of PtL3 and PtL4 formation lies in the ESI-mass spectra with peaks at m/z 610.1171 and 646.0505 which were assigned to the ions [M − Cl] + (PtL3) and [M − 2Cl − H] + (PtL4), respectively.…”

Section: ■ Results and Discussionmentioning

confidence: 96%

Mustards-Derived Terpyridine–Platinum Complexes as Anticancer Agents: DNA Alkylation vs Coordination

et al. 2021

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The development of bifunctional platinum complexes with the ability to interact with DNA via different binding modes is of interest in anticancer metallodrug research. Therefore, we report platinum(II) terpyridine complexes to target DNA by coordination and/or through a tethered alkylating moiety. The platinum complexes were evaluated for their in vitro antiproliferative properties against the human cancer cell lines HCT116 (colorectal), SW480 (colon), NCI-H460 (non-small cell lung), and SiHa (cervix) and generally exhibited potent antiproliferative activity although lower than their respective terpyridine ligands. 1 H NMR spectroscopy and/or ESI-MS studies on the aqueous stability and reactivity with various small biomolecules, acting as protein and DNA model compounds, were used to establish potential modes of action for these complexes. These investigations indicated rapid binding of complex PtL3 to the biomolecules through coordination to the Pt center, while PtL4 in addition alkylated 9-ethylguanine. PtL3 was investigated for its reactivity to the model protein hen egg white lysozyme (HEWL) by protein crystallography which allowed identification of the N δ1 atom of His15 as the binding site.

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“…Reports of the application of cyclometalated Ir III complexes in vapour-deposited OLEDs both as efficient emissive and charge-transporting materials (Adamovich et al, 2003;Grushin et al, 2001) and the luminescent properties of a distorted octahedral Ni II complex with 5,5 0 -dimethyl-2,2 0 -bipyridine have been published (Abedi et al, 2015). The synthesis and a study of the thermal and luminescent properties of d 8 transition-metal complexes with the incorporation of substituted 2,2 0 ;6 0 ,2 00 -terpyridine ligands were described by Momeni et al (2017).…”

Section: Chemical Contextmentioning

confidence: 99%

Crystal structure and photoluminescent properties of bis(4′-chloro-2,2′:6′,2′′-terpyridyl)cobalt(II) dichloride tetrahydrate

et al. 2020

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In the title hydrated complex, [Co(C15H10ClN3)2]Cl2·4H2O, the complete dication is generated by \overline{4} symmetry. The CoN6 moiety shows distortion from regular octahedral geometry with the trans bond angles of two N—Co—N units being 160.62 (9)°. In the crystal, O—H...Cl and C—H...O interactions link the components into (001) sheets. The title compound exhibits blue-light emission, as indicated by photoluminescence data, and a HOMO–LUMO energy separation of 2.23 eV was obtained from its diffuse reflectance spectrum.

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Supramolecular structures of Ni(II) and Pt(II) based on the substituted 2, 2′: 6′, 2″-terpyridine: Synthesis, structural characterization, luminescence and thermal properties

Cited by 13 publications

References 37 publications

Crystal exploring, Hirshfeld surface analysis, and properties of 4′‐(furan‐2‐yl)‐2,2′:6′,2″‐terpyridine complexes of nickel (II): New precursors for the synthesis of nanoparticles

Crystal exploring, Hirshfeld surface analysis, and properties of 4′‐(furan‐2‐yl)‐2,2′:6′,2″‐terpyridine complexes of nickel (II): New precursors for the synthesis of nanoparticles

Mustards-Derived Terpyridine–Platinum Complexes as Anticancer Agents: DNA Alkylation vs Coordination

Crystal structure and photoluminescent properties of bis(4′-chloro-2,2′:6′,2′′-terpyridyl)cobalt(II) dichloride tetrahydrate

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