1,2-Cyclohexanedionedioxime as a useful co-ligand for fabrication of one-dimensional Zn(ii) and Cd(ii) coordination polymers with wheel-and-axle topology and luminescent properties

Croitor, Lilia; Coropceanu, Eduard B.; Siminel, Anatolii V.; Куликова, О. В.; Zelentsov, V. I.; Datsko, T. Ya.; Fonarı, Marina S.

doi:10.1039/c2ce00020b

Cited by 24 publications

(16 citation statements)

References 59 publications

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“…These findings were recently reported by some of us , and independently confirmed . Having been targeted at the hybrid polymeric materials with cumulative properties (luminescence and guest inclusion in our case), we have demonstrated the efficacy of the oxime/anion/aromatic amine ‘‘blend’’ approach , and succeeded in preparation of Zn(II) and Cd(II) mixed-ligand MOMs of different dimensionalities where the bulky classic dioximes or pyridine- n -aldoxime ( n = 2 for 2-pyao, n = 4 for 4-pyao) molecules act as auxiliary ligands whose coordination to the metal centers provides the loosely packed materials with the voids occupied (or might be potentially occupied) by small organic molecules. − ,,− The very limited crystallographic data available for MOMs with pyridine-4-oxime ligands (Scheme ) reveals the monodentate mode of 4-pyao coordination to the metal center via pyridine nitrogen. ,− …”

Section: Introductionsupporting

confidence: 84%

“…For the past decade it has been disclosed in and enriched by a series of low- and high-dimensional MOMs. Although the origin of this phenomenon is not completely understood, and the generation of supramolecular isomers occurs primarily serendipitously, the interest to this event continues to grow, and some reports declare the preparation of supramolecular isomers by design. − Recent examples demonstrate SI in individual Zn(II) and Cd(II) series, − and although it was suggested that the similar in electronic d 10 configuration but different in the radii Zn(II) and Cd(II) ions contribute to forming different coordination networks, − these metals are also capable to produce from the same starting materials alongside the isomorphous crystal structures the supramolecular isomers distinguished either by the conformation of the bridging ligands or by the crystal packing of the identical coordination arrays. − …”

Section: Introductionmentioning

confidence: 99%

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Mechanism of Nonlinear Optical Enhancement and Supramolecular Isomerism in 1D Polymeric Zn(II) and Cd(II) Sulfates with Pyridine-4-aldoxime Ligands

et al. 2014

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Interaction of zinc(II) and cadmium(II) sulfates with pyridine-4-aldoxime (4-pyao) and pyridine-4amidoxime (4-pyamo) ligands resulted in four 1D metal− organic materials (MOMs) with identical composition, [M(SO 4 )A 2 (H 2 O) 2 ] n , where M = Zn(II), A = 4-pyao for 1, M = Cd(II), A = 4-pyao for 2, M = Zn(II), A = 4-pyamo for 3, M = Cd(II), A = 4-pyamo for 4, and mononuclear [Zn(SO 4 )(4-pyamo) 2 (H 2 O) 3 ] 5. New coordination polymers represent the mixed-ligand supramolecular isomers different by the twisting of two pyridine-4-oxime ligands in the metal coordination environments, and crystallizing in the different space groups.Conformational preferences and nonlinear optical properties of the 4-pyao and 4-pyamo complexes were investigated using density functional theory. Spectral properties of 1−3 have been also evaluated. The solid-state emission of 1D polymers 1−3 appears to be ligand-based, as the positions of the emission maxima remain practically unchanged from free ligand to complexes. The enhancement of luminescence and twophoton absorption in polymers in comparison with the pure ligands is attributed to the chelation of the ligand to the metal center. The detailed mechanism of this enhancement upon complex formation is analyzed and can be used in future design of metal−organic nonlinear optical materials.

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Section: Introductionsupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Mechanism of Nonlinear Optical Enhancement and Supramolecular Isomerism in 1D Polymeric Zn(II) and Cd(II) Sulfates with Pyridine-4-aldoxime Ligands

et al. 2014

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“…The geometrical data for the Cd-O and Cd-N bonds conform to those reported for the monomeric Cd(II)-dps compounds. 26,27 As shown in Fig. 2 4).…”

Section: The Asymmetric Unit Consists Of Onementioning

confidence: 74%

Sandwich-like octacyanometalate-based cadmium assemblies with the 4,4′-dipyridyl sulfide ligand

et al. 2014

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“…The emission of HL can be assigned to the π* to π and π* to n intraligand transitions. 31,32 As Cd 2+ or Zn 2+ ions are…”

Section: Photoluminescent Propertiesmentioning

confidence: 99%

Mn(II), Zn(II) and Cd(II) Complexes Based on Oxadiazole Backbone Containing Carboxyl Ligand: Synthesis, Crystal Structure, and Photoluminescent Study

Wang¹,

Fu²,

Zhu³

et al. 2017

ACSi

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were prepared by reacting 5-(3-pyridyl)-1,3,4-oxadiazole-2-thioacetic acid (HL) with corresponding metal acetate in DMF/CH 3 CN medium under solvothermal condition. The isolated complexes were characterized by elemental analysis and infrared spectroscopy. The X-ray crystallographic analysis revealed double strand structure of 1 and 2, and 3D framework of 3. The different structures of these complexes indicate that the configuration of the ligand and the reaction condition play a key role in self-assemble of complexes 1-3. Furthermore, photoluminescent properties of 1 and 2 were also studied in the solid state.

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1,2-Cyclohexanedionedioxime as a useful co-ligand for fabrication of one-dimensional Zn(ii) and Cd(ii) coordination polymers with wheel-and-axle topology and luminescent properties

Cited by 24 publications

References 59 publications

Mechanism of Nonlinear Optical Enhancement and Supramolecular Isomerism in 1D Polymeric Zn(II) and Cd(II) Sulfates with Pyridine-4-aldoxime Ligands

Mechanism of Nonlinear Optical Enhancement and Supramolecular Isomerism in 1D Polymeric Zn(II) and Cd(II) Sulfates with Pyridine-4-aldoxime Ligands

Sandwich-like octacyanometalate-based cadmium assemblies with the 4,4′-dipyridyl sulfide ligand

Mn(II), Zn(II) and Cd(II) Complexes Based on Oxadiazole Backbone Containing Carboxyl Ligand: Synthesis, Crystal Structure, and Photoluminescent Study

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