Zinc carboxylates containing diimine: Synthesis, characterization, crystal structure, and luminescence

Dey, Dipankar; Roy, Subhadip; Purkayastha, Ranendra N. Dutta; Raghavaiah, Pallepogu; McArdle, Patrick

doi:10.1016/j.molstruc.2013.09.009

Cited by 27 publications

(8 citation statements)

References 59 publications

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“…Binuclear complexes 1 and 2 are similar to reported binuclear complexes of other d -metals with +2 charge [ 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 ]. The complex 3 is known and was obtained earlier by reaction of [Mn(Piv) 2 (EtOH)] n and 2,2′-bipy in THF in air [ 49 ].…”

Section: Resultssupporting

confidence: 82%

Versatile Reactivity of MnII Complexes in Reactions with N-Donor Heterocycles: Metamorphosis of Labile Homometallic Pivalates vs. Assembling of Endurable Heterometallic Acetates

et al. 2021

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Reaction of 2,2′-bipyridine (2,2′-bipy) or 1,10-phenantroline (phen) with [Mn(Piv)2(EtOH)]n led to the formation of binuclear complexes [Mn2(Piv)4L2] (L = 2,2′-bipy (1), phen (2); Piv- is the anion of pivalic acid). Oxidation of 1 or 2 by air oxygen resulted in the formation of tetranuclear MnII/III complexes [Mn4O2(Piv)6L2] (L = 2,2′-bipy (3), phen (4)). The hexanuclear complex [Mn6(OH)2(Piv)10(pym)4] (5) was formed in the reaction of [Mn(Piv)2(EtOH)]n with pyrimidine (pym), while oxidation of 5 produced the coordination polymer [Mn6O2(Piv)10(pym)2]n (6). Use of pyrazine (pz) instead of pyrimidine led to the 2D-coordination polymer [Mn4(OH)(Piv)7(µ2-pz)2]n (7). Interaction of [Mn(Piv)2(EtOH)]n with FeCl3 resulted in the formation of the hexanuclear complex [MnII4FeIII2O2(Piv)10(MeCN)2(HPiv)2] (8). The reactions of [MnFe2O(OAc)6(H2O)3] with 4,4′-bipyridine (4,4′-bipy) or trans-1,2-(4-pyridyl)ethylene (bpe) led to the formation of 1D-polymers [MnFe2O(OAc)6L2]n·2nDMF, where L = 4,4′-bipy (9·2DMF), bpe (10·2DMF) and [MnFe2O(OAc)6(bpe)(DMF)]n·3.5nDMF (11·3.5DMF). All complexes were characterized by single-crystal X-ray diffraction. Desolvation of 11·3.5DMF led to a collapse of the porous crystal lattice that was confirmed by PXRD and N2 sorption measurements, while alcohol adsorption led to porous structure restoration. Weak antiferromagnetic exchange was found in the case of binuclear MnII complexes (JMn-Mn = −1.03 cm−1 for 1 and 2). According to magnetic data analysis (JMn-Mn = −(2.69 ÷ 0.42) cm−1) and DFT calculations (JMn-Mn = −(6.9 ÷ 0.9) cm−1) weak antiferromagnetic coupling between MnII ions also occurred in the tetranuclear {Mn4(OH)(Piv)7} unit of the 2D polymer 7. In contrast, strong antiferromagnetic coupling was found in oxo-bridged trinuclear fragment {MnFe2O(OAc)6} in 11·3.5DMF (JFe-Fe = −57.8 cm−1, JFe-Mn = −20.12 cm−1).

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Section: Resultssupporting

confidence: 82%

Versatile Reactivity of MnII Complexes in Reactions with N-Donor Heterocycles: Metamorphosis of Labile Homometallic Pivalates vs. Assembling of Endurable Heterometallic Acetates

et al. 2021

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“…As shown in Figure S6, complexes 1 – 5 have similar infrared spectra and present characteristic absorption bands of the bitp 2– and auxiliary ligands. The IR spectra of 1 – 5 with major absorption peaks at 1550–1625 and 1350–1450 cm –1 could be attributed to the asymmetric and symmetric stretching vibrations of carboxylic groups, representing the presence of a coordinated −COO group. , The broad absorption bands at 2900–3475 cm –1 of 1 – 4 are in line with the asymmetric vibration of ν(OH), indicating the existence of H 2 O molecules. The weak peak at 3424 cm –1 in 5 could be ascribed to the moisture in the air .…”

Section: Results and Discussionmentioning

confidence: 91%

Highly Thermally and Chemically Stable Nickel(II) Coordination Polymers: Tentative Studies on Their Sorption, Catalysis, and Magnetism

Liu

Kang

Fan

et al. 2018

Crystal Growth & Design

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The five new Ni(II) coordination polymers (CPs) {[Ni(bitp)(bpe) 0.5 (H 2 O) 2 ]•0.5bpe} n (1), {[Ni(bitp)(bpa) 0.5 (Hwhere H 2 bitp = 2-(benzimidazol-1-yl)terephthalic acid, bpe = 1,2-bis(4pyridyl)ethylene, bpa = 1,2-bis(4-pyridyl)ethylane, 4,4′-bpy = 4,4′bipyridine, 2,2′-bpy = 2,2′-bipyridine, and bipyam = 2,2′-bipyridylamine, were prepared under the same hydrothermal environments except for various N-donor ligands which can effectively regulate the structures of the complexes. For the bridging N-donor ligands bpe, bpa, and 4,4′-bpy, isostructural 1 and 2 feature three-dimensional (3D) layered-pillared frameworks with one-dimensional (1D) channels that house free bpe or bpa, while 3 is a wavelike two-dimensional (2D) stacked layer with similar 4,4′-bpy bridging auxiliary ligands. However, when terminal ligands 2,2′-bpy and bipyam are used, 2D 4 and 1D ladder chains 5 are obtained, respectively. Interestingly, 1−5 exhibit outstanding thermostability (up to 320 °C) and chemical stabilities (against boiling water, acids, bases, and organic solvents). Furthermore, on the basis of their highly thermal and chemical stability, tentative studies on the structures and properties (such as adsorption, catalysis, and magnetic properties) were undertaken. The gas sorption measurements show that 1 and 2 exhibit high adsorption selectivity of CO 2 over CH 4 . The catalytic reactions demonstrate the role of catalysts 1−5 to synthesize 3,6-bis(pyridin-4-yl)-1,2,4,5-tetrazine. The magnetic analyses indicate that there exist a zero field splitting (ZFS) on the Ni(II) ions in 1−5.

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“…Among these compounds, Cu(II) and Zn(II) complexes have been synthesized and found to exhibit rich structural diversity. Indeed, monomers, − dimers, ,, and polymers ,− of copper and zinc with DNB and different coligands can be found in the literature. However, few reports have been published showing Cu(II) and Zn(II) complexes containing DNB and azole ligands.…”

Section: Introductionmentioning

confidence: 99%

Cu(II) and Zn(II) Complexes with Dinitrobenzoates and Pyrazolyl Ligands: Structural and Thermal Stability Influence of N–H Moiety

Torres

Macías

Franco-Ulloa

et al. 2019

Crystal Growth & Design

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The synthesis and characterization of air-stable Cu(II) and Zn(II) complexes with 3,5-dinitrobenzoate (DNB) and 3,5dimethylpyrazole (L1) or bis(3,5-dimethylpyrazol-1-yl)methane (L2) are described. Three of these complexes exhibit a monomeric structure, while the Cu(II) complex with L2 is a trinuclear complex. Density functional theory calculations were performed to understand the unexpected formation of the three-centered compound. In agreement with the X-ray crystal structure, the N−H moiety present in L1 was identified as possible driving force to obtain monomeric structures, while L2, without it, can favor the trinuclear complex formation. Thermal studies were carried for the complexes, and it was observed that the presence of the azole ligand allows the decomposition of the complexes at lower temperatures due to the presence of acidic protons, being especially important for L1.

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Zinc carboxylates containing diimine: Synthesis, characterization, crystal structure, and luminescence

Cited by 27 publications

References 59 publications

Versatile Reactivity of MnII Complexes in Reactions with N-Donor Heterocycles: Metamorphosis of Labile Homometallic Pivalates vs. Assembling of Endurable Heterometallic Acetates

Versatile Reactivity of MnII Complexes in Reactions with N-Donor Heterocycles: Metamorphosis of Labile Homometallic Pivalates vs. Assembling of Endurable Heterometallic Acetates

Highly Thermally and Chemically Stable Nickel(II) Coordination Polymers: Tentative Studies on Their Sorption, Catalysis, and Magnetism

Cu(II) and Zn(II) Complexes with Dinitrobenzoates and Pyrazolyl Ligands: Structural and Thermal Stability Influence of N–H Moiety

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